Read Complete genome sequence of marine bacterium Pseudoalteromonas phenolica bacteriophage TW1, Archives of Virology on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
One hundred one antibacterial Pseudoalteromonas strains that inhibited growth of a Vibrio anguillarum test strain were collected on a global research cruise (Galathea 3), and 51 of the strains repeatedly demonstrated antibacterial activity. Here, we profile secondary metabolites of these strains to determine if particular compounds serve as strain or species markers and to determine if the secondary metabolite profile of one strain represents the bioactivity of the entire species. 16S rRNA gene similarity divided the strains into two primary groups: One group (51 strains) consisted of bacteria which retained antibacterial activity, 48 of which were pigmented, and another group (50 strains) of bacteria which lost antibacterial activity upon sub-culturing, two of which were pigmented. The group that retained antibacterial activity consisted of six clusters in which strains were identified as Pseudoalteromonas luteoviolacea, Pseudoalteromonas aurantia, Pseudoalteromonas phenolica, Pseudoalteromonas ...
Academic Journals Database is a universal index of periodical literature covering basic research from all fields of knowledge, and is particularly strong in medical research, humanities and social sciences. Full-text from most of the articles is available. Academic Journals Database contains complete bibliographic citations, precise indexing, and informative abstracts for papers from a wide range of periodicals.
Cloning of a gene encoding cold-adapted alpha-Amylase from the psychrotrophic bacterium Pseudoalteromonas haloplanctis strain 505
en] The halotolerance of a cold adapted alpha-amylase from the psychrophilic bacterium Pseudoalteromonas haloplanktis (AHA) was investigated. AHA exhibited hydrolytic activity over a broad range of NaCl concentrations (0.01-4.5 M). AHA showed 28% increased activity in 0.5-2.0 M NaCl compared to that in 0.01 M NaCl. In contrast, the corresponding mesophilic (Bacillus amyloliquefaciens) and thermostable (B. licheniformis) alpha-amylases showed a 39 and 46% decrease in activity respectively. Even at 4.5 M NaCl, 80% of the initial activity was detected for AHA, whereas the mesophilic and thermostable enzymes were inactive. Besides an unaltered fluorescence emission and secondary structure, a 10 degrees C positive shift in the temperature optimum, a stabilization factor of , 5 for thermal inactivation and a Delta T-m of 8.3 degrees C for the secondary structure melting were estimated in 2.7 M NaCl. The higher activation energy, half-life time and T-m indicated reduced conformational dynamics and ...
Vol 2: Genome Sequences of Two Pseudoalteromonas Strains Isolated from the South China Sea.. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Finds sub-sequence or patterns in the sequence and highlights the matching region. The tool works with standard single letter nucleotide or protein codes including ambiguities and can match Prosite patterns in protein sequences ...
in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (2014), 51. In human cognition, self and memory processes strongly interact, as evidenced by the memory advantage for self-referential materials (Self Reference Effect (SRE) and Self Reference Recollection Effect ... [more ▼]. In human cognition, self and memory processes strongly interact, as evidenced by the memory advantage for self-referential materials (Self Reference Effect (SRE) and Self Reference Recollection Effect (SRRE)). The current study examined this interaction at the behavioural level and its neural correlates in patients with Alzheimers disease (AD). Healthy older controls (HC) and AD patients performed trait-adjectives judgements either for self-relevance or for other-relevance (encoding phase). In a first experiment, the encoding and subsequent yes-no recognition phases were administrated in an MRI scanner. Brain activation as measured by fMRI was examined during self-relevance judgements and ...
Pseudoalteromonas marina sp. nov., a marine bacterium isolated from tidal flats of the Yellow Sea, and reclassification of Pseudoalteromonas sagamiensis as Algi
The Genomic tRNA Database is curated by Todd Lowe and Patricia Chan. Please email [email protected] with any questions and comments. To submit corrections, please use our Bug and Request Tracking System ...
Buy Pseudoalteromonas; nigrifaciens online from Microorganisms. Certified reference materials for highly accurate and reliable data analysis.
Janakiram, P and Veerendrakumar, M and Loka, Jayasree and Sivaprasad, B (2014) Probiotic activity of Pseudomonas aeruginosa (PIC-4) isolated from Visakhapatnam coast, Bay of Bengal, India, against Vibrio harveyi in Penaeus monodon. International Journal of Fisheries and Aquatic Studies, 1 (6). pp. 199-207. Jayasree, V S and Sobhana, K S and Poulose, Priyanka and Jasmine, S and Ranjith, L and Sreenath, K R and Saravanan, Raju and Kingsly, H Jose and Joshi, K K (2017) Isolation and characterization of violet pigmented bacteria Pseudoalteromonas luteoviolacea from selected coral reef ecosystems of India. [Image] Josephraj, John (2000) Studies on bionomics and pathogenicity of Luminescent bacteria. Masters thesis, Central Institute of Fisheries Education. ...
en] The cold-adapted alpha-amylase from Pseudoalteromonas haloplanktis (AHA) is a multidomain enzyme capable of reversible unfolding. Cold-adapted proteins, including AHA, have been predicted to be structurally flexible and conformationally unstable as a consequence of a high lysine-to-arginine ratio. In order to examine the role of low arginine content in structural flexibility of AHA, the amino groups of lysine were guanidinated to form homoarginine (hR), and the structure-function-stability properties of the modified enzyme were analyzed by transverse urea gradient-gel electrophoresis. The extent of modification was monitored by MALDI-TOF-MS, and correlated to changes in activity and stability. Modifying lysine to hR produced a conformationally more stable and less active a-amylase. The k(cat) of the modified enzyme decreased with a concomitant increase in Delta H-# and decrease in K-m. To interpret the structural basis of the kinetic and thermodynamic properties, the hR residues were modeled ...
Viruses influence the ecology and evolutionary trajectory of microbial communities. Yet our understanding of their roles in ecosystems is limited by the paucity of model systems available for hypothesis generation and testing. Further, virology is limited by the lack of a broadly accepted conceptual framework to classify viral diversity into evolutionary and ecologically cohesive units. Here, we introduce genomes, structural proteomes, and quantitative host range data for eight Pseudoalteromonas phages isolated from Helgoland (North Sea, Germany) and use these data to advance a genome-based viral operational taxonomic unit (OTU) definition. These viruses represent five new genera and inform 498 unaffiliated or unannotated protein clusters (PCs) from global virus metagenomes. In a comparison of previously sequenced Pseudoalteromonas phage isolates (n = 7) and predicted prophages (n = 31), the eight phages are unique. They share a genus with only one other isolate, Pseudoalteromonas podophage ...
ID A0A0F4PLM6_9GAMM Unreviewed; 109 AA. AC A0A0F4PLM6; DT 24-JUN-2015, integrated into UniProtKB/TrEMBL. DT 24-JUN-2015, sequence version 1. DT 25-OCT-2017, entry version 10. DE SubName: Full=Translation initiation factor SUI1 {ECO:0000313,EMBL:KJY96790.1}; GN ORFNames=TW72_16375 {ECO:0000313,EMBL:KJY96790.1}; OS Pseudoalteromonas ruthenica. OC Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales; OC Pseudoalteromonadaceae; Pseudoalteromonas. OX NCBI_TaxID=151081 {ECO:0000313,EMBL:KJY96790.1, ECO:0000313,Proteomes:UP000033664}; RN [1] {ECO:0000313,EMBL:KJY96790.1, ECO:0000313,Proteomes:UP000033664} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=S3137 {ECO:0000313,EMBL:KJY96790.1, RC ECO:0000313,Proteomes:UP000033664}; RX PubMed=25879706; DOI=10.1186/s12864-015-1365-z; RA Machado H., Sonnenschein E.C., Melchiorsen J., Gram L.; RT Genome mining reveals unlocked bioactive potential of marine Gram- RT negative bacteria.; RL BMC Genomics 16:158-158(2015). CC -!- CAUTION: The ...
Lineage: cellular organisms; Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales; Pseudoalteromonadaceae; Pseudoalteromonas; Pseudoalteromonas ...
Finds sub-sequence or patterns in the sequence and highlights the matching region. The tool works with standard single letter nucleotide or protein codes including ambiguities and can match Prosite patterns in protein sequences ...
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Repeats-in-toxin (RTX) adhesins are a recently discovered class of biofilm-associated proteins (BAPs) needed by many Gram-negative bacteria-such as Vibrio cholerae, Salmonella entrica, and some Pseudomonads-to colonize and infect animal and plant tissues (1-5). At ~2000 residues, RTX adhesins are often the largest proteins produced by their hosts and, based on bioinformatics analyses, share a similar domain organization. They usually contain an N-terminal membrane anchor, an extremely long, repetitive central extender region, and a modular ligand-binding region with C-terminal RTX repeats and a type I secretion system (T1SS) signal.. Despite RTX adhesins key role in the tenacity of bacterial biofilms, little is known about their molecular detail. Structural studies on RTX adhesins have been hampered by their massive size and repetitive nature. Consequently, many fundamental questions, such as how RTX adhesins stay attached to the bacterial surface and what are their specific binding partners on ...
Band: Opus Atlantica Album: Opus Atlantica Release Year: 2002 Country: Sweden Genre: Progressive/Power Metal Last known line-up: Pete Sandberg - Vocals (Silver Seraph, Midnight Sun (Swe)) Johan Reinholdz - Guitar (Andromeda (Swe), Nonexist, Skyfire) Jonas Reingold - Bass, keyboards (Midnight Sun (Swe), Reptilian, The Flower Kings) Jaime Salazar - Drums (Blakk Totem, Timeless Miracle, Last…
Bacterial circular chromosomes replicate bidirectionally by the theta mechanism. Circular plasmids replicate by three general mechanisms: theta type, strand displacement, and rolling circle (43). Different machineries are involved in different plasmid replication mechanisms (43). For example, initiation of theta-type plasmid replication generally requires a plasmid-encoded initiator protein. In contrast, initiation of strand displacement replication requires the plasmid-encoded helicase, primase, and initiator protein, and initiation of rolling-circle replication requires the plasmid-encoded protein with DNA strand transferase enzymatic activity. The absence of the above essential proteins for the latter two mechanisms indicated that Pseudoalteromonas chromids replicate by the theta mechanism. Consistent with this, no such proteins in chromids from other bacteria have been reported. Considering the different replication factors involved in different mechanisms, a parsimony assumption is that ...
Atlantica is a Stargate Atlantis fan site and fanlisting, for the SciFi and MGM TV spin-off series based on the Stargate SG-1 TV show.
Atlantica is a Stargate Atlantis fan site and fanlisting, for the SciFi and MGM TV spin-off series based on the Stargate SG-1 TV show.
Human ALPP full-length ORF ( NP_001623.3, 1 a.a. - 535 a.a.) recombinant protein with GST-tag at N-terminal. (H00000250-P01) - Products - Abnova
TY - JOUR. T1 - Two diketopiperazines and one halogenated phenol from cultures of the marine bacterium, Pseudoaltermonas Luteoviolacea. AU - Jiang, Z.. AU - Boyd, K. G.. AU - Mearns-Spragg, A.. AU - Adams, D. R.. AU - Wright, P. C.. AU - Burgess, J. G.. PY - 2000. Y1 - 2000. N2 - Two diketopiperazines, cyclo-(L-prolyl-L-glycine) and cyclo-(L-phenylalanyl-4R-hydroxy-L-proline), and 2,4-dibromo-6-chlorophenol were isolated from cultures of the marine bacterium, Pseudoalteromonas luteoviolacea. Cyclo-(L-prolyl-L-glycine) and cyclo-(L-phenylalanyl-4R-hydroxy-L-proline) stimulated antibiotic production in this strain. 2,4-Dibromo-6-chlorophenol showed antibacterial activity against methicillin resistant Staphylococcus aureus (MRSA) and the cystic fibrosis associated pathogen Burkholderia cepacia.. AB - Two diketopiperazines, cyclo-(L-prolyl-L-glycine) and cyclo-(L-phenylalanyl-4R-hydroxy-L-proline), and 2,4-dibromo-6-chlorophenol were isolated from cultures of the marine bacterium, Pseudoalteromonas ...
To infect and replicate, Pseudoalteromonas virus PM2 delivers its genome across the cell envelope of two known marine host strains: gram-negative Pseudoalteromonas species ER72M2 and BAL-31. Virions adsorb via the distal tips of the spike proteins to uncharacterized receptors (Abrescia et al., 2008). The internal membrane mediates the translocation of the supercoiled genome across the host cell envelopes, most probably via fusion in a process that is not fully understood. Replication of the viral genome, most probably by a rolling circle mechanism, takes place in proximity to the host cytoplasmic membrane. The largest Pseudoalteromonas virus PM2 gene XII encoding protein P12 shares significant sequence similarity with the superfamily I group of replication initiation proteins (Männistö et al., 1999). The genome is organized in three operons (Figure 2.Corticoviridae). Operons OEL and OER encode early gene products: the replication initiation protein P12 and transcription regulatory proteins ...
ABSTRACT: Gymnodinium catenatum is an introduced toxic dinoflagellate that blooms intermittently and causes shellfish farm closure in the Huon Estuary, Tasmania, Australia. Seventy-five bacteria isolated from the estuary were tested for algicidal activity against this and other toxic and non-toxic algal species. Five isolates produced algicidal extracellular exudates. These algicidal species were a Pseudoalteromonas sp. (ACEM 4), a novel Zobellia sp. (ACEM 20), a strain of Cellulophaga lytica (ACEM 21) and 2 Firmicutes: a novel Planomicrobium sp. (ACEM 22) and a strain of Bacillus cereus (ACEM 32). This study is the first time Gram-positive bacteria have been associated with algicidal activities. Further data are presented on an algicidal Pseudoalteromonas species previously isolated from the Huon Estuary (Strain y). Supernatant produced by all 5 strains caused cell lysis and death in G. catenatum vegetative cells. No change or reversible ecdysis was noted for 2 other endemic dinoflagellate ...
To infect and replicate, PM2 delivers its genome across the cell envelope of two known marine host strains: Gram-negative Pseudoalteromonas species ER72M2 and BAL-31. Virions adsorb via the distal tips of the spike proteins to uncharacterized receptors (Abrescia et al., 2008). The internal membrane mediates the translocation of the supercoiled genome across the host cell envelopes most probably via fusion in a process which is not fully understood. Replication of the PM2 genome, most probably by a rolling circle mechanism, takes place in proximity to the host cytoplasmic membrane. The largest PM2 gene XII encoding protein P12 shares significant sequence similarity with the superfamily I group of replication initiation proteins (Männistö et al., 1999). The genome is organized in three operons (Figure 2.Corticoviridae). Operons OEL and OER encode early function gene products: the replication initiation protein P12 and transcription regulatory proteins P13, P14, P15 and P16. Expression of the ...
The effect of L. anguillarum and V. splendidus on the bacterial community associated with rotifers and seawater of rearing tanks was analysed by DGGE of PCR-amplified 16S rDNA fragments. The bacterial community of rotifers did not present a marked species dominance. The incorporation of L. anguillarum or V. splendidus did not reduce bacterial diversity and shifts could be explained by bacterial exchange between rotifers and seawater. Main bacterial groups were identified by sequencing the DNA extracted from Marine Agar (MA) bacterial isolates and DGGE excised bands. Only 2 DGGE bands corresponded to bacteria isolated from MA plates, suggesting that bacterial groups present in rotifers may not be easily cultivable. The bacterial community of rotifers was composed by Gram negative bacteria belonging to α-Proteobacteria (Ruegeria spp), γ-Proteobacteria (Alteromonas alvinellae, Marinobacter sp, an Oceanospirillaceae bacterium and Pseudoalteromonas sp), Cytophaga-Flexibacter-Bacteroides group ...
Pseudoalteromonas maricaloris sp. nov., isolated from an Australian sponge, and reclassification of [Pseudoalteromonas aurantia] NCIMB 2033 as Pseudoalteromonas flavipulchra sp. ...
Glutathione synthetases catalyze the ATP-dependent synthesis of glutathione from L-γ-glutamyl-L-cysteine and glycine. Although these enzymes have been sequenced and characterized from a variety of biological sources, their exact catalytic mechanism is not fully understood and nothing is known about their adaptation at extremophilic environments. Glutathione synthetase from the Antarctic eubacterium Pseudoalteromonas haloplanktis (PhGshB) has been expressed, purified and successfully crystallized. An overall improvement of the crystal quality has been obtained by adapting the crystal growth conditions found with vapor diffusion experiments to the without-oil microbatch method. The best crystals of PhGshB diffract to 2.34 Å resolution and belong to space group P212121, with unit-cell parameters a = 83.28 Å, b = 119.88 Å, c = 159.82 Å. Refinement of the model, obtained using phases derived from the structure of the same enzyme from Escherichia coli by molecular replacement, is in progress. The
Bacterial adhesins are modular cell-surface proteins that mediate adherence to other cells, surfaces, and ligands. The Antarctic bacterium Marinomonas primoryensis uses a 1.5-MDa adhesin comprising over 130 domains to position it on ice at the top of the water column for better access to oxygen and nutrients. We have reconstructed this 0.6-μm-long adhesin using a dissect and build structural biology approach and have established complementary roles for its five distinct regions. Domains in region I (RI) tether the adhesin to the type I secretion machinery in the periplasm of the bacterium and pass it through the outer membrane. RII comprises ~120 identical immunoglobulin-like β-sandwich domains that rigidify on binding Ca2+ to project the adhesion regions RIII and RIV into the medium. RIII contains ligand-binding domains that join diatoms and bacteria together in a mixed-species community on the underside of sea ice where incident light is maximal. RIV is the ice-binding domain, and the ...
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Membrane proteins of an Antarctic bacterium Pseudomonas syringae Proteomics, Membrane proteome, Antarctic bacterium, Pseudomonas syringae Lz4W, MALDI TOF/TOF LC-ESI MS/MS, Electrophoresis, detergents. Microbiology VDM Verlag Dr. Müller (2011-04-27) - ISBN-13: 978-3-639-33582-8 ...
Domain combinations containing the PKD domain superfamily in Bacillus thuringiensis str. Al Hakam. Domain architectures illustrate each occurrence of the PKD domain superfamily.
Marine microorganisms and their extracellular enzymes (ECEs) play an important role in the remineralization of organic material by hydrolyzing high-molecular-weight substrates to sizes sufficiently small to be transported through cell membrane, yet the diversity of the enzyme-producing bacteria and the types of ECEs involved in the degradation process are largely unknown. In this work, we investigated the diversity of cultivable bacteria and their ECEs and the potential activities of aminopeptidase in the water column at eight different depths of the New Britain Trench. There was a great diversity of cultivable bacteria and ECEs, and depth appears an important driver of the diversity. The 16S rRNA sequence analysis revealed that the cultivable bacteria were affiliated mostly with the phyla Proteobacteria and Actinobacteria, and the predominant genera were Pseudoalteromonas (62.7%) and Halomonas (17.3%). Moreover, 70.7% of the isolates were found to produce hydrolytic zone on casein and gelatin plates,
The MACs resemble similar syringe structures found on bacteriophages - viruses that infect bacteria - and with evolution, the bacteria have stolen this structure from the phages, and have put it to good use.. Phage typically attack bacteria with these structures, but instead of using it to infect other bacteria, the Pseudoalteromonas now uses it to interact with other animals, such as tubeworms, insects, and mouse cells, Shikuma said.. MACs are created when the bacteria undergo cell lysis - when the cells blow themselves up - and the bacteria that do this die afterward, so its almost like altruism because it benefits the rest of the bacterial population.. Not every bacterium in this strain produces the MACs, only about one out of 50 do so, but since we can produce trillions of these bacteria, supply will not be an issue and more of them can be engineered to produce MACs, he explained.. The findings will be published September 17th in eLife journal, and follow on the heels of a recent ...
In the time since our last blog post we have tried several attempts to perform a successful conjugation with multiple strains of Pseudoalteromonas and Planococcus associated with the accessory nidamental gland of the squid. We follow the conjugation protocol for the conjugation. Conjugation is how bacteria exchange genetic information. In this case our E. coli conjugates contain a transposon, which basically randomly inserts into DNA and we are hoping for this transposon to insert in the codon that codes for biofilms for our bacterial samples. Here are the basic steps from this protocol: first overnight cultures of or samples are grown. The next day we combine our intended recipient bacteria with the E. coli conjugant that has the transposon and pellet them using a centrifuge. We then resuspend the pellet and then spot the mixture of the two on a plate. We then let the bacteria grow over night at room temperature where the two should conjugate. The next day we scrape the spot off the plate, ...
In the time since our last blog post we have tried several attempts to perform a successful conjugation with multiple strains of Pseudoalteromonas and Planococcus associated with the accessory nidamental gland of the squid. We follow the conjugation protocol for the conjugation. Conjugation is how bacteria exchange genetic information. In this case our E. coli conjugates contain a transposon, which basically randomly inserts into DNA and we are hoping for this transposon to insert in the codon that codes for biofilms for our bacterial samples. Here are the basic steps from this protocol: first overnight cultures of or samples are grown. The next day we combine our intended recipient bacteria with the E. coli conjugant that has the transposon and pellet them using a centrifuge. We then resuspend the pellet and then spot the mixture of the two on a plate. We then let the bacteria grow over night at room temperature where the two should conjugate. The next day we scrape the spot off the plate, ...
This is a weightless water-based acne spot treatment that helps quickly fight, fade, and prevent future blemishes for spotless-looking skin. The key ingredient, Bacillus Ferment & Saccharomyces Ferment Filtrate, is derived from the ferment of a certain type of bacteria strain, called Pseudoalteromonas. Its known t
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No distributional records for this taxon have been recorded by AlgaeBase to date. Generally, recent national lists or extensive regional or state lists have been employed to give a general indication of distribution.. Created: 13 March 2006 by M.D. Guiry. Verified by: 13 March 2006 by M.D. Guiry. Accesses: This record has been accessed by users 120 times since it was created.. Verification of data ...
September Arctic sea ice extent data since 1980 from the National Snow and Ice Data Center (blue diamonds). Recovery years, meaning years when the sea ice extent is greater than the previous year, are highlighted in red to mock the repeated cynical claims of climate change skeptics that global warming has somehow stopped. Many factors affect the annual summer decrease in Arctic sea ice extent, and it is illogical at best to claim any trend by cherry-picking only brief periods of data. The obvious true long-term trend in Arctic sea ice extent (red second-order polynomial curve fit) is that it is declining at an accelerating rate. ...
Scientists predicted a decade ago that Arctic ice loss would shift storm tracks and bring on worse western droughts of the kind we are now seeing. Recent studies find that Arctic sea ice loss may well usher changes in the jet stream that lead to more U.S. extreme weather events (see here and here).. Several studies also suggest that in Arctic sea ice loss is driving more extreme weather in other parts of the world (see review here).. Now a new study in Environmental Research Letters, Influence of Arctic sea ice on European summer precipitation finds a a causal link between observed sea ice anomalies, large-scale atmospheric circulation and increased summer rainfall over northern Europe. The University of Exeter news release explains:. ...
The sesquiterpene hydroquinone avarol (1) was isolated from the marine sponge Dysidea avara, whereas the corresponding quinone, avarone (2), was obtained by oxidation of avarol, and the significantly more lipophilic compounds [3-(p-chloro-phenyl)avarone (3), 3,4-ethylenedithioavarone (4), 4-isopropylthioavarone (5), 4-tert-butylthioavarone (6), 4-propylthioavarone (7), 4-octylthioavarone (8)] were obtained by nucleophilic addition of thiols or p-chloroaniline to avarone. All these compounds were tested, at concentrations ranging from 0.5 to 50 μg/mL, for their effect on the settlement of the cyprid stage of Balanus amphitrite, for toxicity to both nauplii and cyprids and for their growth inhibitory activity on marine bacteria (Cobetia marina, Marinobacterium stanieri, Vibrio fischeri and Pseudoalteromonas haloplanktis) and marine fungi (Halosphaeriopsis mediosetigera, Asteromyces cruciatus, Lulworthia uniseptata and Monodictys pelagica).
Figure 9. Reconstructed (1935-1979), measured (1979-2016), and projected Arctic sea ice extent between 1890-2090. Source of original figure: NCA. Red dashed line, 1979-2011 exponential fit. Orange dashed line, 1935-2015 sinusoidal AMO fit with AMO trend from figure 8. Red box, satellite data window. Forward projections are completely different, and AMO model is the only one predicting two or more decades of no significant Arctic ice melting or even ice growth.. Based on exponential fit or linear acceleration a group of scientists headed by Peter Wadhams and Wieslaw Maslowki, and parroted by Al Gore, defended a complete melting of Arctic sea ice by 2012-2020. They are completely discredited already in scientific circles, which doesnt prevent them from reaching to the media and contributing to the fear campaign without being contradicted.. Based on accelerating melting, more mainstream ice scientists like Mark Serreze, director of NSIDC, defend 1 million km2 ice free conditions by 2030.. IPCC ...
Psychrophilic organisms produce AFPs in order to prevent ice growth during freezing. Some studies have demonstrated that these proteins are extremely effective in the inhibition of recrystallization of ice even at very low concentrations [49]. However, their working mechanism is not well understood. Moreover, their properties offer the opportunity to exploit AFPs for biotechnological applications, especially in food industry. In frozen food products, freezing provides a multitude of small ice crystals, but it is also important to prevent the formations of large ice crystals [50]. AFPs from Antarctic bacteria GU1.7.1, GU3.1.1 and AFP5.1 were able to reduce the damage associated to ice, probably through the reduction of the size of large ice crystals in buffer solution. This phenomenon was evidenced when zucchini and cucumbers tissues were treated with a commercial and bacterial AFPs, where small pore were (red asterisk Figs. 1, 2) formed on plant cell walls of treated tissues in comparison to the ...
The aim of this work was to determine the effect of light crude oil on bacterial communities during an experimental oil spill in the North Sea and in mesocosms (simulating a heavy, enclosed oil spill), and to isolate and characterize hydrocarbon-degrading bacteria from the water column. No oil-induced changes in bacterial community (3 m below the sea surface) were observed 32 h after the experimental spill at sea. In contrast, there was a decrease in the dominant SAR11 phylotype and an increase in Pseudoalteromonas spp. in the oiled mesocosms (investigated by 16S rRNA gene analysis using denaturing gradient gel electrophoresis), as a consequence of the longer incubation, closer proximity of the samples to oil, and the lack of replenishment with seawater. A total of 216 strains were isolated from hydrocarbon enrichment cultures, predominantly belonging to the genus Pseudoaltero monas; most strains grew on PAHs, branched and straight-chain alkanes, as well as many other carbon sources. No obligate ...
Email: [email protected] The Arctic sea ice cover is made up of discrete units of sea ice area called floes. The size of these floes has an impact on several sea ice processes including the volume of melt produced at floe edges, the momentum exchange between the sea ice, ocean, and atmosphere, and the mechanical response…
The decline of Arctic sea ice has been documented in over 30 years of satellite passive microwave observations. The resulting darkening of the Arctic and its amplification of global warming was hypothesized almost 50 years ago but has yet to be verified with direct observations. This study uses satellite radiation budget measurements along with satellite microwave sea ice data to document the Arctic-wide decrease in planetary albedo and its amplifying effect on the warming. The analysis reveals a striking relationship between planetary albedo and sea ice cover, quantities inferred from two independent satellite instruments. We find that the Arctic planetary albedo has decreased from 0.52 to 0.48 between 1979 and 2011, corresponding to an additional 6.4 ± 0.9 W/m2 of solar energy input into the Arctic Ocean region since 1979. Averaged over the globe, this albedo decrease corresponds to a forcing that is 25% as large as that due to the change in CO2 during this period, considerably larger than ...
The sea ice is leaving us a bit more every year. Its time to start contemplating its absence, which is why I teamed up with Kevin McKinney to write an extended version of the shorter piece you might see pop up here and there. Because you know, disappearing sea ice...
The sea ice is leaving us a bit more every year. Its time to start contemplating its absence, which is why I teamed up with Kevin McKinney to write an extended version of the shorter piece you might see pop up here and there. Because you know, disappearing sea ice...
We sometimes feel like were repeating ourselves when we talk about Arctic sea ice - because we are. In recent months, sea ice extent has been again reaching record lows - right now, its at a second-low record, just behind the 2007 record. The past five years have seen the five lowest sea ice extents recorded. If this isnt a worrying downward trend, I dont know what is.. We are causing this melt. There is just no going around it. If data and graphs and scientific research dont quite bring the point home, how about a really, really, really big piece of art?. Ive talked to a lot of people about this piece of art by John Quigley - and heard just as many interpretation of what the message is.. This is what John Quigley had to say about it: We came here to create the Melting Vitruvian Man, after Da Vincis famous sketch of the human body, because climate change is literally eating into the body of our civilisation. When he did this sketch it was the Enlightenment, the Renaissance, the dawn of ...
The National Snow and Ice Data Center has announced that the Arctic sea ice appears to have reached its minimum extent for 2008. On Sept. 12, 2008 sea ice extent dropped to 4.52 million square kilometers (1.74 million square miles), the data center reported. This appears to have been the lowest p...
The record Arctic sea ice decline this year has predictably and deservedly received a fair amonut of media attention. Jonathan Leake of the Sunday Times recently penned an article on the impending sea ice record. The bulk of the article was quite good, but at the end succumbed to the standard mainstream media practice of seeking balance, thus including some comments by John Christy. Christy has become very reliable for arguing that anything and everything related to climate change probably just boils down to natural variability, as he recently told US Congress was the case with regards to the frequency of extreme weather events, contrary to the body of peer-reviewed scientific literature.
Viruses are highly host specific.[5] Studies have shown that marine viruses are more likely to infect cooccurring organisms, those that live in the same region a virus exists in.[6] Therefore, biogeography is an important factor in a virions ability to infect. The knowledge of variation of viral populations across spatiotemporal and other environmental gradients is supported viral morphology, determined by transmission electron microscopy (TEM). Non-tailed viruses appear to be dominant in multiple depths and oceanic regions, followed by the Caudovirales myoviruses, podoviruses, and siphoviruses.[7] However, viruses belonging to families Corticoviridae,[8] Inoviridae[9] and Microviridae[10] are also known to infect diverse marine bacteria. Metagenomic evidence suggests that microviruses (icosahedral ssDNA phages) are particularly prevalent in marine habitats.[10] Metagenomic approaches to assess viral diversity are often limited by a lack of reference sequences, leaving many sequences ...
Scientists have linked the decline in Arctic sea ice to the emergence of a deadly virus that could threaten marine mammals in the North Pacific, according to a study from the University of California, Davis.
As Suzanne Goldenberg reported in The Guardian yesterday, Arctic sea ice appears to have reached its annual minimum extent, at approximately 5.1 million square kilometers. This is the 6th-lowest extent since the satellite record began in 1979.
Arctic sea ice is like the fabled canary in a coal mine when it comes to global warming. The far north is very sensitive to changes in climate, with te ...
Objective: The purpose of this study was to investigate the protective and therapeutic effects of aqueous extract of P. atlantica gum on an experimental asthma in BALB/c mice. Materials and Methods: Aqueous extract of dried and milled P. atlantica gum was assemble andevaluate by GC-MS. In order to investigate the effect of P. atlantica gum extract on cellular and pathological aspects of asthma, 60 BALB/c mice were divided into six groups as: negative control, asthmatic group, asthmatic group receiving dexamethasone (1mg/kg; intraperitoneal (IP)) and three asthmatic groups receiving different concentrations of the extract (100, 200 and 400 mg/kg, orally) from the beginning of the study and continued for 84 days. The examined parameters included cell population, IgE antibody production, levels of IL-4, IL-5, TGF-β, INF-γ, IL-10, and IL-17 cytokines, and lung tissue damage. Results: Regardless of the dose, aqueous extract of P. atlantica gum, caused significant decrease in the number of BALF
Cold-adapted marine bacteria represent an untapped reservoir of chemical-diversity able to synthesize a wide range of bioactive compounds, including antibiofilm molecules. The present research project aims to explore extreme marine environments and to exploit marine-derived biomolecules as a sustainable source of novel antibiofilm compounds. In this work, the antibiofilm activity of total organic extracts derived from cultures of Polar marine bacteria, belonging to Flavobacterium, Pseudoalteromonas, Pseudomonas, Psychrobacter and Psychromonas genera, were evaluated against some pathogenic bacteria, such as Staphylococcus aureus, Staphylococcus epidermidis and Pseudomonas aeruginosa. Suitable purification protocols will be developed to purify and characterize the most promising antibiofilm molecules, and their possible clinical applications will be investigated.. ...
Sea ice loss makes it warmer February 20, 2013 Arctic Sea Ice Loss: Its Worse Than We Thought Loss of Arctic sea ice is significant because it can contribute to positive feedback mechanisms that can accelerate global warming even further. Arctic Sea Ice Loss: Its Worse Than We Thought Sea ice loss makes it colder…
Isolation of Protease-Producing Arctic Marine Bacteria - Arctic;Marine bacteria;Protease;Exiguobacterium;Pseudoalteromonas;Pseudomonas;
Many proteins and protein domains have a β‐sandwich topology similar to that seen in PKD domains (Bork et al., 1994). The fold of these proteins is called the immunoglobulin‐like fold after the first structure in which it was seen (Bork et al., 1994). When classifying protein structures, it is important to distinguish between proteins that happen to share a similar fold and proteins that, based on sequence and structural evidence, are clearly evolutionarily related and fall into distinct protein families and superfamilies (Murzin et al., 1995). Not all proteins with the Ig‐like fold are related, nor are they all members of the Ig superfamily. Whilst they have the same overall fold these proteins differ in the arrangement of the peripheral regions, in particular in the positioning of the edge strands of the β‐sheets. They also differ in the packing of the hydrophobic core. The topology of the PKD domain with sheets formed by the A, B, E and G, F, C and C′ strands is the same as that ...
Tetrodotoxin (TTX) is a potent neurotoxin. Its name derives from Tetraodontiformes, an order that includes pufferfish, porcupinefish, ocean sunfish, and triggerfish; several of these species carry the toxin. Although tetrodotoxin was discovered in these fish and found in several other aquatic animals (e.g., in blue-ringed octopuses, rough-skinned newts, and moon snails), it is actually produced by certain infecting or symbiotic bacteria like Pseudoalteromonas, Pseudomonas, and Vibrio as well as other species found in the animals ...
Aqua, Isopropy Palmitate, Polyglycery-3 Methylglucose Distearate, Caprylic/Capric Triglyceride, Hydrogenated Polydecene, Glycerin, Glyceryl Stearate SE, Cetearyl Alcohol, Methylpropanediol, Sodium Acrylate/Sodium, Acryloyldimethyl Taurate Copolymer, Isohexadecane, Polysorbate 80, Olus Oil, Camelina Sativa Seed Oil, Hydroxypropyl Starch Phosphate, Phenoxyethanol, Steareth-20, N-Hydroxysuccinimide, Chrysin, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Sodium PCA, Glucose, Urea, Glutamic Acid, Lysine, Glycine, Lactic Acid, Propylene Glycol, Pseudoalteromonas Ferment Extract, Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein, Tripeptide-10 Citrulline, Tripeptide-1, Acetyl Tripeptide-5, Butylene Glycol, Safflower Oil/Palm Oil Aminopropanediol Esters, Biosaccharides Gum-1, Lecithin, Soy Isoflavones, Sodium Hyaluronate, Caffeine, Pullulan, Allantoin, Ethylhexylglycerine, Xanthan Gum, Carbomer, Caprylyl Glycol, Dimethylmethoxy Chromanol, Alcohol, PEG-8, Tocopherol, Ascorbic Acid, Ascorbyl Palmitate, ...
Book now at Atlantica at the Allegria in Long Beach, explore menu, see photos and read 412 reviews: Best thing about Atlantica is the ocean view Unfortunately the food quslity and menu choices leave alot to be desired. Do not order the caesar salaf u...
Captain Nicolo Alba presents Costa Atlantica souvenir to Salwai Charlot, Prime Minister of Vanuatu Costa Asia announced the completion of Chinas first cruise to the South Pacific Islands. Costa Atlantica set sail on a 46-day voyage from Tianjin International Cruise Terminal on November 30, 2016, taking more than 2,000 passengers across two continents, visiting 12…
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By Tim RadfordThe great Arctic thaw-up to 50 percent of sea ice by area and 75 percent by volume in the summer season-could be offering new opportunities for one of the planets most successful parasites. Toxoplasma gondii, an infection spread by almost all cat species, has been identified for the f...
The ice cover in the Arctic Ocean at the end of summer 2008 will lie, with almost 100 per cent probability, below that of the year 2005 - the year with the second lowest sea ice extent ever measured. Chances of an equally ...
I am a big fan of WUWT and enjoy your postings. This is a great article about sea ice and I am glad there are people like you presenting the other side to these arguments. Please do not take the following argument as an attack on you or your work. However, I do disagree with your assertion that based on this RSS data shown in your article, temperatures have been trending lower since 2003. I pulled up the RSS data on wood for trees all the way back to the late 1970s. The graph shows that temperatures have basicly moved sideways from the late 1970s through the early 1990s. Starting from the low in the early 1990s, there is a clear uptrend formed by connecting the lows of the data series. If you draw a parellel line connecting the highs together you get a nice uptrending channel, except for the spike high put in during 1998. We know this is an aberation because of El Nino and because the measurements came back into the uptrending channel and remained there until 2007. In mid 2007, the trend line ...
Changes are occurring so rapidly during the summer months that sea ice is likely to disappear faster than most climate models have ever predicted
How much will it cost to send this letter to ? qual e o preo do viagra generico Go in, listen, be silent and understand, and explain to the world what happened here, Quebec police Lieutenant Michel Brunet told a small group of journalists who have been reporting on the disaster, which killed 50 people and destroyed the center of this lakeside town near the Maine border. precio tamoxifeno gador Lawmakers including Robert Menendez, the chairman of the Senate Foreign Relations Committee, have signaled they want Tehran to stop even low-level enrichment of uranium used in generating power before they would take steps to wind down existing sanctions, or even agree not to put through tougher ones. stamina rx at gnc Arctic sea ice tends to reach a minimum in mid-September each year, and, over the past several weeks, there have been a few articles circulating via social media about the extent of Arctic sea ice in 2013. These articles note something that is true: there is substantially more ice in the ...
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Since about 1910 we have lived in an age of ever-increasing division of labor. As we rely more and more on the skills of others we need ever fewer skills ourselves. Many people cant change a tap washer, a fuse or a spark plug. They rely on others to exercise the required skills with due diligence. Unfortunately, many people adopt that attitude with news. Just about anybody would agree that there are good and bad mechanics, electricians and plumbers. Is it so hard to accept, then, that there are good and bad reporters? But how to tell them apart? ...
At the World Economic Forum this week in Davos, Switzerland, the young climate change activist Greta Thunberg had stern words for the worlds most powerful people. Citing the work of the 2018...
Current. Floyd A. Reed (PI). Graduate Students:. Áki J. Láruson (graduate student, Ph.D. candidate, Zoology Graduate program, sea urchin population genetics). Maria T. Costantini (graduate student, Zoology Graduate program, akikiki and akekee conservation genetics). Michael A. Wallstrom (understand the role of invasive algae in Hawaiʻi). Undergrads and Postbacs:. Kyira Larry. Todd Aquino-Michaels. Maya Shaulsky. Alumni. Zachary Quiogue. Rumer Ajifu. Angelina Holcomb Stacy Paulino (undergrad, Spring-Summer 2016, screening for marine bacteriophage for coral conservation). Alyssa Lau (REU student, Summer 2016). Victoria Sharp (REU student, Summer 2016). Fabrece Roup (undergrad, Spring-Fall 2014, Spring 2015, BIOL 499 directed research, terrestrial microorganism DNA barcoding, migration-selection equilibrium in underdominant Drosophila populations). Jolene T. Sutton (postdoc, Biology department, engineering underdominance in Culex mosquitoes for potential conservation of Hawaiian ...
Add tags for Arctic Sea : the discoveries north of Smith Sound by the U.S. Ship Polaris under the command of C.F. Hall, 1871-1873. ...
A DNA fragment size variant for the growth hormone gene, Gh, has been identified among inbred strains of mice. The inbred strains SM/J and CAST/Ei carry the less frequent allele Ghb and 11 other strains carry the Gha allele. Segregation analysis of data from two crosses involving SM/J and NZB/BINJ and a cross involving BALB/cJ and CAST/Ei confirmed the assignment of Gh to mouse chromosome 11 and placed the locus 2.6 +/- 1.8 map units distal to Erba (avian erythroblastosis oncogene A), a position consistent with the assignment of the Gh locus to the q22-q24 region of chromosome 17 on the human map. Segregation analysis also refined the location of Sparc (secreted acidic cysteine-rich glycoprotein) on mouse chromosome 11 to a position 16.7 +/- 4.2 map units proximal to Evi-2 (ecotropic viral integration site 2).
L. A. Mayer, Seafloor Mapping and Exploration in a Changing Arctic Sea Ice Environment, in Changes in the Arctic Environment and the Law of the Sea, vol. 33, no. M.H Nordquist, J.N. Moore & T. Heider, Leiden, South Holland, The Netherlands: Martinus Nijhoff legacy_publishers, 2010, pp. 83-106. ...