Loading...
  • carboxylic
  • Orthocarbonic acid is one of the group of carboxylic ortho acids that have the general structure of RC(OH)3.The term ortho acid is also used to refer to the most hydroxylated acid in a set of oxoacids. (wikipedia.org)
  • typically
  • The numbering reflects the recommended 1988 numbering based on the fact that the isomer is typically phosphorylated at the hydroxyl group associated with the #1 carbon when used as the hydrated sodium receptor. (wikipedia.org)
  • organic
  • Any of a class of highly reactive organic chemical compounds characterized by the common group CHO and used in the manufacture of resins, dyes, and organic acids. (eurelectric.org)
  • amino
  • Disclosed herein are protecting groups for exocyclic amino groups of the base cytosine for use in the synthesis of oligonucleotides and oligonucleoside phosphorothioates, the protecting groups being represented by the formula: --CO--(CH2)0-9 --CH3. (google.com)
  • energy
  • Most bacteria are unable to use sorbitol for energy, but it can be fermented slowly by a group of orally found bacteria called "mutans streptococci" thus potentially causing tooth decay unlike xylitol which is considered to be non-acidogenic. (wikipedia.org)
  • forms
  • A group of aquatic, photosynthetic, eukaryotic organisms ranging from unicellular to multicellular forms, and generally possess chlorophyll but lack true roots, stems and leaves characteristic of terrestrial plants. (eurelectric.org)
  • made
  • BACKGROUND INFORMATION: The use of yeast in food production is the oldest and most extensive contribution made by any group of microorganisms. (markedbyteachers.com)
  • in this case the hydration is made favorable by the electron-withdrawing trifluoromethyl groups. (wikipedia.org)
  • solid
  • An emissions control device that removes VOCs from a gas stream as a result of the gas attaching (adsorbing) onto a solid matrix such as activated carbon. (eurelectric.org)
  • Carbons
  • A new experimental carbon black pigment from Orion Engineered Carbons, XPB 255, features colorimetric properties ideal for high-jet automotive coatings as well as both solventborne and waterborne polyurethane (PU) coating systems. (coatingsworld.com)
  • Δ12-PGJ2 undergoes a spontaneous dehydration reaction across its 15-hydroxyl-carbon 14 region to form a new double bound between carbons 14 and 15 thereby becoming 15-deoxy-Δ12,14-PGJ2 with retained electrophilic sites at carbons 9 and 13. (wikipedia.org)
  • Both PGs undergo a dehydration reaction across their 11-hydroxyl-carbon 10 regions to form a new double bond between carbons 10 and 11 to become PGA2 and PGA1, respectively, with a cyclopenenone ring replacing the cyclopentaonon rings or their recursors and a newly established electrophilic site at carbon 11. (wikipedia.org)
  • This electrophilic site is probably less electrophilic that the carbon 9 sites of Δ12-PGJ2 and 15-deoxy-Δ12-PGJ2 The cyclopentenone structures of PGA2, PGA1, PGJ2, Δ12-PGJ2, and 15-d-Δ12,14-PGJ2 possess α,β-unsaturated carbonyl groups (see Carbonyl group#α,β-Unsaturated carbonyl compounds) which serve to establish high levels of chemical reactivity at nearby carbons 9, 11, and/or 13. (wikipedia.org)
  • nitrogen
  • This is in line with a proposed mechanism with an initial N-O acyl shift, involving transient protonation of the amide nitrogen, and subsequent hydroxyl-mediated hydrolysis of the resulting ester. (openthesis.org)
  • Significant delocalisation of the lone pair of electrons on the nitrogen atom gives the group a partial double bond character. (wikipedia.org)
  • However, the activation energy can be lowered (and the isomerization catalyzed) by changes that favor the single-bonded form, such as placing the peptide group in a hydrophobic environment or donating a hydrogen bond to the nitrogen atom of an X-Pro peptide group. (wikipedia.org)
  • Arginine can be methylated once (monomethylated arginine) or twice, with either both methyl groups on one terminal nitrogen (asymmetric dimethylarginine) or one on both nitrogens (symmetric dimethylarginine), by protein arginine methyltransferases (PRMTs). (wikipedia.org)
  • amide
  • The amide bond is synthesized when the carboxyl group of one amino acid molecule reacts with the amino group of the other amino acid molecule, causing the release of a molecule of water (H2O), hence the process is a dehydration synthesis reaction (also known as a condensation reaction). (wikipedia.org)
  • The partial double bond renders the amide group planar, occurring in either the cis or trans isomers. (wikipedia.org)
  • Amide groups can isomerize about the C'-N bond between the cis and trans forms, albeit slowly ( τ ∼ {\displaystyle \tau \sim } 20 seconds at room temperature). (wikipedia.org)
  • carboxyl group
  • This is a two-step process, which involves oxidation of isocitrate (a secondary alcohol) to oxalosuccinate (a ketone), followed by the decarboxylation of the carboxyl group beta to the ketone, forming alpha-ketoglutarate. (wikipedia.org)
  • aromatic
  • Acetonitriles containing an extra stabilizing electron-withdrawing group (such as an aromatic ring) can usually be deprotonated using hydroxide or alkoxide bases. (organicreactions.org)
  • NB: [http://en.wikipedia.org/wiki/Threonine 'Tyrosine is not an alcohol but a phenol, since its hydroxyl group is bonded directly to an aromatic ring, giving it different acid/base and oxidative properties). (openwetware.org)
  • Urushiols are naturally existing organic compounds that have the catechol skeleton structure and diphenol functionality but with alkyl groups substituted onto the aromatic ring. (wikipedia.org)
  • phosphate
  • Several variations on this basic structure exist, including alternate backbones such as sphingosine in the sphingolipids, and hydrophilic groups such as phosphate as in phospholipids. (wikipedia.org)
  • additive
  • 13. The epoxy paste adhesive of claim 1 additionally comprising from at least one inorganic particulate additive selected from the group consisting of calcium oxide and calcium rarbonate. (patentsencyclopedia.com)
  • alcohol
  • In this process, the alcohol group off the alpha-carbon (C#2) is deprotonated and the electrons flow to the alpha-C forming a ketone group and removing a hydride off C#2 using NAD+/NADP+ as an electron accepting cofactor. (wikipedia.org)
  • double
  • H2O]) across its 9-hydroxyl-carbon 10 region to form a new 9,10 double bond to become PGJ2 possessing a cyclopentenone ring (i.e. the ring contains one double bond) replacing the cyclopentanone ring (i.e. the ring has no double bonds) of PGD2. (wikipedia.org)
  • Also present in mupirocin are pseudomonic acid B with an additional hydroxyl group at C8, pseudomonic acid C with a double bond between C10 and C11, instead of the epoxide of PA-A, and pseudomonic acid D with a double bond at C4` and C5` in the 9-hydroxy-nonanoic acid portion of mupirocin. (wikipedia.org)
  • position
  • Furthermore, the carbon at position 6 has been methylated, as is the case in clarithromycin, to achieve better acid-stability. (wikipedia.org)
  • plants
  • In plants, algae, bacteria (except for the α-proteobacteria group) and archaea, it is produced from glutamic acid via glutamyl-tRNA and glutamate-1-semialdehyde. (wikipedia.org)
  • Plants produce flavonoids and isoflavones with methylations on hydroxyl groups, i.e. methoxy bonds. (wikipedia.org)
  • structure
  • High dietary intake of long-chain omega-3 polyunsaturated fatty acids such as docosahexaenoic acid (DHA) with a 22-carbon chain (for structure, see Fig. S1 ) is considered to promote good health in numerous and diverse ways, potentially protecting the immune, nervous, and cardiovascular systems ( 1 , 2 ). (pnas.org)
  • Chemical
  • It is one of several rock-forming minerals in the Pyroxene group, which are physically-related as their chemical content is quite similar and forms a chain. (gem5.com)
  • either
  • The amino group bears either an acetyl or a glycolyl group. (wikipedia.org)
  • A nonnative isomer of some peptide groups can disrupt the conformational folding significantly, either slowing it or preventing it from even occurring until the native isomer is reached. (wikipedia.org)
  • diverse group
  • Thus, the pathogen-associated molecular patterns (PAMPs) presented by a diverse group of infectious organisms results in a innate immune response involving certain cytokines, chemokines and growth factors followed by a precise adaptive immune response tailored to the infectious pathogen via antigen presentation resulting in antibody production and cytotoxic T cell generation. (allindianpatents.com)
  • Lipids are the most diverse group of biochemicals. (wikipedia.org)
  • large
  • When found in groups of large bright crystals, it is usually called "diamond tin. (gem5.com)
  • often
  • Serpentine may refer to a single mineral but more often to a group of minerals including antigorite, chrysotile, clinochrysotile, and lizardite, which are altered products of basic and ultra-basic rocks. (gem5.com)
  • least
  • 10. The epoxy paste adhesive of claim 1 comprising at least one epoxy resin selected from the group consisting of diglycidyl ethers of bisphenol A and bisphenol F. (patentsencyclopedia.com)
  • 17. The epoxy paste adhesive of claim 1 additionally comprising at least one impact modifier/toughening agent selected from the group consisting of epoxy-based prepolymers obtained by reacting one or more amine-terminated polymers with one or more epoxy resins. (patentsencyclopedia.com)