Background: Deleted in liver cancer-1 (DLC-1) is a tumour suppressor gene that is inactive in liver carcinogenesis. It encodes a ρ-guanosine triphosphatase-activating protein (ρ-GAP) and maps to one of the deleted regions (8p21.3-22). Little is known, however, about the methylation status of the DLC-1 promoter in myeloma cells.. Aim: To identify whether methylation of DLC-1 was associated in pathogenesis of multiple myeloma.. Methods: Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect DLC-1 transcripts in RPMI 8226, U266, OPM-2 and XG-2 cell lines. The methylation status was determined by methylation-specific PCR followed by bisulphite DNA sequencing in these four cell lines and in the bone marrow of 14 patients with multiple myeloma and 4 normal patients. DLC-1 mRNA expression in cells with or without treatment with 5-aza-deoxycytidine (5-aza-CdR) or trichostatin A (TSA) was investigated by real-time RT-PCR.. Results: RPMI 8226 and U266 showed complete methylation and ...
Regulator of G-protein signaling 19 is a protein that in humans is encoded by the RGS19 gene. G proteins mediate a number of cellular processes. The protein encoded by this gene belongs to the RGS (regulators of G-protein signaling) family and specifically interacts with G protein, GAI3. This protein is a guanosine triphosphatase-activating protein that functions to down-regulate Galpha i/Galpha q-linked signaling. RGS19 has been shown to interact with GNAO1, GIPC1, OSTM1, GNAI1, GNAI3 and GNAZ. GRCh38: Ensembl release 89: ENSG00000171700 - Ensembl, May 2017 GRCm38: Ensembl release 89: ENSMUSG00000002458 - Ensembl, May 2017 "Human PubMed Reference:". "Mouse PubMed Reference:". De Vries L, Mousli M, Wurmser A, Farquhar MG (January 1996). "GAIP, a protein that specifically interacts with the trimeric G protein G alpha i3, is a member of a protein family with a highly conserved core domain". Proc Natl Acad Sci U S A. 92 (25): 11916-20. doi:10.1073/pnas.92.25.11916. PMC 40514 . PMID 8524874. "Entrez ...
TY - JOUR. T1 - DLC1 negatively regulates angiogenesis in a paracrine fashion. AU - Shih, Yi Ping. AU - Liao, Yi Chun. AU - Lin, Yuan. AU - Lo, Su Hao. PY - 2010/11/1. Y1 - 2010/11/1. N2 - The Rho GTPase-activating protein DLC1 is a tumor suppressor that is often deleted in liver cancer and downregulated in other cancers. DLC1 regulates the actin cytoskeleton, cell shape, adhesion, migration, and proliferation through its Rho GTPase-activating protein activity and focal adhesion localization. In this study, we silenced DLC1 in nonmalignant prostate epithelial cells to explore its tumor suppression functions. Small hairpin RNA-mediated silencing of DLC1 was insufficient to promote more aggressive phenotypes associated with tumor cell growth. In contrast, DLC1 silencing promoted pro-angiogenic responses through vascular endothelial growth factor (VEGF) upregulation, accompanied by the accumulation of hypoxia-inducible factor 1α and its nuclear localization. Notably, modulation of VEGF expression ...
This gene encodes a member of the GIT protein family, which interact with G protein-coupled receptor kinases and possess ADP-ribosylation factor (ARF) GTPase-activating protein (GAP) activity. GIT proteins traffic between cytoplasmic complexes, focal adhesions, and the cell periphery, and interact with Pak interacting exchange factor beta (PIX) to form large oligomeric complexes that transiently recruit other proteins. GIT proteins regulate cytoskeletal dynamics and participate in receptor internalization and membrane trafficking. This gene has been shown to repress lamellipodial extension and focal adhesion turnover, and is thought to regulate cell motility. This gene undergoes extensive alternative splicing to generate multiple isoforms, but the full-length nature of some of these variants has not been determined. The various isoforms have functional differences, with respect to ARF GAP activity and to G protein-coupled receptor kinase 2 binding. [provided by RefSeq, Sep 2008 ...
Phosphoinositide lipids recruit proteins to the plasma membrane involved in the regulation of cytoskeleton organization and in signalling pathways that control cell polarity and growth. Among those, Rgd1p is a yeast GTPase-activating protein (GAP) specific for Rho3p and Rho4p GTPases, which control actin polymerization and stress signalling pathways. Phosphoinositides not only bind Rgd1p, but also stimulate its GAP activity on the membrane-anchored form of Rho4p. Both F-BAR (F-BAR FCH, and BAR) and RhoGAP domains of Rgd1p are involved in lipid interactions. In the Rgd1p-F-BAR domain, a phosphoinositide-binding site has been recently characterized. We report here the X-ray structure of the Rgd1p-RhoGAP domain, identify by NMR spectroscopy and confirm by docking simulations, a new but cryptic phosphoinositide-binding site, comprising contiguous A1, A1′ and B helices. The addition of helix A1′, unusual among RhoGAP domains, seems to be crucial for lipid interactions. Such a site was totally ...
May be involved in several stages of intracellular trafficking (By similarity). Could play an important role in the regulation of glucose transport by insulin. May act as a downstream effector of RHOQ/TC10 in the regulation of insulin-stimulated glucose transport.
p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.,/p> ,p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.,/p> ,p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).,/p> ,p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x,sup>64,/sup> + x,sup>4,/sup> + x,sup>3,/sup> + x + 1. The algorithm is described in the ISO 3309 standard. ,/p> ,p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.,br /> ,strong>Cyclic redundancy and other checksums,/strong>,br /> ,a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993),/a>),/p> Checksum:i ...
This gene encodes a member of a large family of proteins that activate Rho-type guanosine triphosphate (GTP) metabolizing enzymes. The encoded protein may pay a role in clathrin-mediated endocytosis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Aug 2013 ...
InterPro provides functional analysis of proteins by classifying them into families and predicting domains and important sites. We combine protein signatures from a number of member databases into a single searchable resource, capitalising on their individual strengths to produce a powerful integrated database and diagnostic tool.
Disabled homolog 2-interacting protein is a protein that in humans is encoded by the DAB2IP gene. DAB2IP is a Ras (MIM 190020) GTPase-activating protein (GAP) that acts as a tumor suppressor gene and is inactivated by methylation in prostate and breast cancers (Yano et al., 2005).[supplied by OMIM] DAB2IP has been shown to interact with DAB2. GRCh38: Ensembl release 89: ENSG00000136848 - Ensembl, May 2017 GRCm38: Ensembl release 89: ENSMUSG00000026883 - Ensembl, May 2017 "Human PubMed Reference:". "Mouse PubMed Reference:". Chen H, Pong RC, Wang Z, Hsieh JT (April 2002). "Differential regulation of the human gene DAB2IP in normal and malignant prostatic epithelia: cloning and characterization". Genomics. 79 (4): 573-81. doi:10.1006/geno.2002.6739. PMID 11944990. Wang Z, Tseng CP, Pong RC, Chen H, McConnell JD, Navone N, Hsieh JT (April 2002). "The mechanism of growth-inhibitory effect of DOC-2/DAB2 in prostate cancer. Characterization of a novel GTPase-activating protein associated with ...
Diverse GTPase-activating proteins (GAPs) for the p21rho subfamily were detected by a novel overlay assay (Manser, E., Leung, T., Monfries, C., Teo, M., Hall, C., and Lim, L. (1992) J. Biol. Chem. 267, 16025-16028), with some GAPs being tissue-specific. Using a PCR strategy exploiting conserved regions common to rho/rac-GAPs, we have isolated a rat testis cDNA encoding a 34-kDa rac-GAP termed beta-chimaerin, as it was highly related to n-chimaerin, containing both a GAP domain (77% identity) and the phorbol ester-binding region (93% identity). beta-Chimaerin mRNA is expressed exclusively in the testis at the onset of sexual maturation. In situ hybridization and cell fractionation analyses show beta-chimaerin mRNA expression to be stage-specific, paralleling acrosomal assembly at the late stage of spermatogenesis. A corresponding testis-specific 30-kDa rac-GAP was detected. The testis-specific and stage-dependent expression of this new member of the chimaerin family offer an alternative model system for
Stimulation of Na+/K+-ATPase translocation to the cell surface increases active Na+ transport, which is the driving force of alveolar fluid reabsorption, a process necessary to keep the lungs free of edema and to allow normal gas exchange. Here, we provide evidence that insulin increases alveolar fluid reabsorption and Na+/K+-ATPase activity by increasing its translocation to the plasma membrane in alveolar epithelial cells. Insulin-induced Akt activation is necessary and sufficient to promote Na+/K+-ATPase translocation to the plasma membrane. Phosphorylation of AS160 by Akt is also required in this process, whereas inactivation of the Rab GTPase-activating protein domain of AS160 promotes partial Na+/K+-ATPase translocation in the absence of insulin. We found that Rab10 functions as a downstream target of AS160 in insulin-induced Na+/K+-ATPase translocation. Collectively, these results suggest that Akt plays a major role in Na+/K+-ATPase intracellular translocation and thus in alveolar fluid ...
Cell polarization generally occurs along a single axis in response to spatial cues. In the budding yeast Saccharomyces cerevisiae, the axis of polarized growth is determined by selection of a bud site, which is dependent on cell type - haploid a and α cells bud in the axial pattern, whereas diploid a/α cells bud in the bipolar pattern (Chant and Herskowitz, 1991; Freifelder, 1960; Hicks et al., 1977). Selection of a bud site depends on several genes, collectively called BUD genes, which encode cell-type-specific cortical markers and components of the Rsr1 GTPase module - Rsr1/Bud1, its GTPase-activating protein (GAP) Bud2 and its GDP-GTP exchange factor (GEF) Bud5 (Bender and Pringle, 1989; Chant et al., 1991; Chant and Herskowitz, 1991; Park et al., 1993). These Bud proteins closely interact with the Cdc42 GTPase and its regulators to trigger bud emergence at a proper site (see Bi and Park, 2012 and references therein).. In the absence of spatial cues, yeast cells can still bud, albeit at a ...
The Rho family small GTP-binding proteins are subjected to regulation by Rho GTPase-activating proteins (GAPs) in the course of transmitting diverse intracellular signals. To understand the mechanism of GAP-catalyzed GTP hydrolysis of Rho GTPases, we have studied the interaction between RhoA and p190, the RasGAP binding phosphoprotein which has been implicated as a Rho-specific GAP, by delineating the structural determinants of RhoA and p190 GAP domain (p190GD) that are involved in their functional coupling. Besides the conserved residues Tyr34, Thr37, and Phe39 in the switch I region of RhoA which are required for p190GD interaction, chimeras made between RhoA and Cdc42, a close relative of RhoA with which p190GD interacts 50-fold less efficiently, revealed that residues outside the switch I and neighboring regions of RhoA, residues 85-122 in particular, contain the major p190GD-specifying determinant(s). Mutation of the unique Asp90 of RhoA in this region mostly abolished p190GD stimulation, ...
Changes in cell morphology are linked to many cellular events including cytokinesis, differentiation, migration and apoptosis. We recently showed that BNIP-Sα induced cell rounding that leads to apoptosis via its BNIP-2 and Cdc42GAP Homology (BCH) domain, but the underlying mechanism has not been determined. Here, we have identified a unique region (amino acid 133-177) of the BNIP-Sα BCH domain that targets RhoA, but not Cdc42 or Rac1 and only the dominant-negative form of RhoA could prevent the resultant cell rounding and apoptotic effect. The RhoA-binding region consists of two parts; one region (residues 133-147) that shows some homology to part of the RhoA switch I region and an adjacent sequence (residues 148-177) that resembles the REM class I RhoA-binding motif. The sequence 133-147 is also necessary for its heterophilic interaction with the BCH domain of the Rho GTPase-activating protein, p50RhoGAP/ Cdc42GAP. These overlapping motifs allow tripartite competition such that ...
A novel role for the GTPase-activating protein Bud2 in the spindle position checkpoint.: The spindle position checkpoint (SPC) ensures correct mitotic spindle p
This gene encodes a phosphoinositide binding protein containing ARF-GAP, RHO-GAP, RAS-associating, and pleckstrin homology domains. The ARF-GAP and RHO-GAP domains cooperate in mediating rearrangements in the cell cytoskeleton and cell shape. It is a specific PtdIns(3,4,5)P3/PtdIns(3,4)P2-stimulated Arf6-GAP protein. An alternatively spliced transcript has been found for this gene, but its biological validity has not been determined ...
Rho GTPases are important regulators for cell dynamics. They are activated by guanine nucleotide exchange factors and inactivated by GTPase-activating proteins (GAPs). We recently identified a novel RhoGAP, BPGAP1, that uses the BNIP-2 and Cdc42GAP homology (BCH) domain, RhoGAP domain and proline-rich region to regulate cell morphology and migration. To further explore its roles in intracellular signaling, we employed protein precipitations and matrix-assisted laser desorption/ionization mass-spectrometry and identified EEN/endophilin II as a novel partner of BPGAP1. EEN is a member of the endocytic endophilin family but its function in regulating endocytosis remains unclear. Pull-down and co-immunoprecipitation studies with deletion mutants confirmed that EEN interacted directly with BPGAP1 via its Src homology 3 (SH3) domain binding to the proline-rich region 182-PPPRPPLP-189 of BPGAP1, with prolines 184 and 186 being indispensable for this interaction. Overexpression of EEN or BPGAP1 alone ...
Emerging evidence indicates that the neuronal guidance molecule SLIT plays a role in tumor suppression, as SLIT-encoding genes are inactivated in several types of cancer, including lung cancer; however, it is not clear how SLIT functions in lung cancer. Here, our data show that SLIT inhibits cancer cell migration by activating RhoA and that myosin 9b (Myo9b) is a ROBO-interacting protein that suppresses RhoA activity in lung cancer cells. Structural analyses revealed that the RhoGAP domain of Myo9b contains a unique patch that specifically recognizes RhoA. We also determined that the ROBO intracellular domain interacts with the Myo9b RhoGAP domain and inhibits its activity; therefore, SLIT-dependent activation of RhoA is mediated by ROBO inhibition of Myo9b. In a murine model, compared with control lung cancer cells, SLIT-expressing cells had a decreased capacity for tumor formation and lung metastasis. Evaluation of human lung cancer and adjacent nontumor tissues revealed that Myo9b is ...
ARF GAP Lis a kind of important regulator of introcellular transport. Recently, a novel human gene has been found from a cDNA library of second trimester human fetal liver. The amino acid sequence encoded by the novel gene has 32% similarity to rat ARF1 GAP, was thus termed as ARFGAP3. Functional studies of the new gene were performed. The full-length cDNA of ARFGAP3 was amplified from the human total placenta RNA by RT-PCR technique, then subcloned into pGEM-T vector and sequenced. The RNA Master blot and multiple tissue Northern blot analysis were used to define the expression profile and the transcript size of ARFGAP3 in human tissues. It was shown that ARFGAP3 was strongly expressed in glands and testis and that ARFGAP3 mRNA existed as only one kind of transcript of 2.7 kb in various human tissues. Then, the expression and purification of the recombinant human ARFGAP3 (rhARFGAP3) were performed. It was demonstrated that rhARFGAP3 exhibited strong GTPase-activating protein ( GAP) activity ...
Insulin exerts many of its metabolic actions via the canonical phosphatidylinositide 3 kinase (PI3K)/Akt pathway, leading to phosphorylation and 14-3-3 binding of key metabolic targets. We previously identified a GTPase-activating protein (GAP) for Rac1 called RhoGAP22 as an insulin-responsive 14-3-3 binding protein. Insulin increased 14-3-3 binding to RhoGAP22 fourfold, and this effect was PI3K dependent. We identified two insulin-responsive 14-3-3 binding sites (pSer(16) and pSer(395)) within RhoGAP22, and mutagenesis studies revealed a complex interplay between the phosphorylation at these two sites. Mutating Ser(16) to alanine blocked 14-3-3 binding to RhoGAP22 in vivo, and phosphorylation at Ser(16) was mediated by the kinase Akt. Overexpression of a mutant RhoGAP22 that was unable to bind 14-3-3 reduced cell motility in NIH-3T3 fibroblasts, and this effect was dependent on a functional GAP domain. Mutation of the catalytic arginine of the GAP domain of RhoGAP22 potentiated growth factor-stimulated
G protein GAPs allow rapid termination of a signal on removal of agonist, but can also substantially inhibit signaling in the presence of agonist by shortening the activation lifetime of the G protein during the GTPase cycle. The data presented here describe how the individual steps in the GTPase cycle combine to produce both robust activation by agonist and rapid deactivation on agonist removal. Such balance is particularly important for G protein-regulated effectors, such as PLC-β1, that use intrinsic GAP activity to modulate the kinetics of their own activation.. The most striking outcome of this study was the speed of GAP-stimulated hydrolysis of Gq-bound GTP, with an average khydrol of 25 s−1 for RGS4 and 15 s−1 for the effector PLC-β1 at 30°C. This represents a 2,000-fold increase over the basal rate of 0.013 s−1 (12), comparable to the 10,000-fold effect of ras GAP on p21ras (23). Moreover, G protein GAPs accelerate GTP hydrolysis by an allosteric mechanism, whereas GAPs for ...
Mouse monoclonal antibody raised against a partial recombinant RABGAP1. RABGAP1 (AAH54492, 1 a.a. ~ 110 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa. (H00023637-M01) - Products - Abnova
GTPase-activating Protein (GAP); Contains Rho1p-specific GAP Activity, Interacting With Activated Forms Of Rho1p; Functions Along With Sac7p As A Negative Regulator Of The Pkc1p-mediated Cell Wall Integrity Signaling Pathway; Negative Regulator Of Cell Wall 1,3-beta-glucan Biosynthesis; Required For Efficient Cell Fusion; Contains A RhoGAP Domain And Three Lin-11-Isl1-Mec-3 (LIM) Domains
GTPase-activating Protein (GAP); Contains Rho1p-specific GAP Activity, Interacting With Activated Forms Of Rho1p; Functions Along With Sac7p As A Negative Regulator Of The Pkc1p-mediated Cell Wall Integrity Signaling Pathway; Negative Regulator Of Cell Wall 1,3-beta-glucan Biosynthesis; Required For Efficient Cell Fusion; Contains A RhoGAP Domain And Three Lin-11-Isl1-Mec-3 (LIM) Domains
Although the ability of FcγRIIB1 to oppose stimulation of B cell responses by engagement of the BCR is well documented, the mechanism by which FcγRIIB1 antagonizes the BCR is incompletely understood. The participation of Src-related kinases in BCR-mediated signaling and the ability of Csk to suppress Src-related kinase activity in resting B cells suggested the possible participation of Csk in antagonism of BCR signaling by FcγRIIB1. In response to extracellular signals, the activity of Csk is known to be modulated by changes in its intracellular localization ((21), (23)). Recruitment of Csk into a signaling pathway emanating from FcγRIIB1 would therefore be expected to involve FcγRIIB1-induced changes in the association of Csk with other proteins or in the phosphorylation state of proteins known to interact with Csk. In this communication we have demonstrated that signaling through FcγRIIB1 induces tyrosine phosphorylation of a 62-kD protein (p62) that associates with the SH2 domain of ...
GTPase-activating protein for p21-rac. Contains phorbol-ester/DAG-type zinc finger (C1 domain), Rho-GAP domain, and SH2 domain ...
Mouse Monoclonal Anti-RABGAP1 Antibody (1A8) [DyLight 680]. Validated: WB, ELISA, ICC/IF. Tested Reactivity: Human. 100% Guaranteed.
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Kit Component:- KN301499G1, Arhgap25 gRNA vector 1 in pCas-Guide vector- KN301499G2, Arhgap25 gRNA vector 2 in pCas-Guide vector- KN301499D, donor…
View mouse Arhgap24 Chr5:102481391-102897937 with: phenotypes, sequences, polymorphisms, proteins, references, function, expression
View mouse Arhgap5 Chr12:52503972-52571975 with: phenotypes, sequences, polymorphisms, proteins, references, function, expression
CryoSat users are informed that a roll campaign is scheduled on 06 February 2018 (from 01:42:00 to 05:07:30 UTC and from 14:17:00 to 17:27:30 UTC). SIRAL instrument routine planning will be suspended and data gaps are possible. NRT users will be mostly affected.. ...
CryoSat users are informed that a roll campaign is scheduled on 06 February 2018 (from 01:42:00 to 05:07:30 UTC and from 14:17:00 to 17:27:30 UTC). SIRAL instrument routine planning will be suspended and data gaps are possible. NRT users will be mostly affected.. ...
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Buy ARFGAP1 recombinant protein, ADP-ribosylation factor GTPase-activating protein 1 (ARFGAP1) Recombinant Protein-NP_001268411.1 (MBS1301288) product datasheet at MyBioSource, Recombinant Proteins
Duanes retraction syndrome (DRS) is a complex congenital eye movement disorder caused by aberrant innervation of the extraocular muscles by axons of brainstem motor neurons. Studying families with a variant form of the disorder (DURS2-DRS), we have identified causative heterozygous missense mutations in CHN1, a gene on chromosome 2q31 that encodes α2-chimaerin, a Rac guanosine triphosphatase-activating protein (RacGAP) signaling protein previously implicated in the pathfinding of corticospinal axons in mice. We found that these are gain-of-function mutations that increase α2-chimaerin RacGAP activity in vitro. Several of the mutations appeared to enhance α2-chimaerin translocation to the cell membrane or enhance its ability to self-associate. Expression of mutant α2-chimaerin constructs in chick embryos resulted in failure of oculomotor axons to innervate their target extraocular muscles. We conclude that α2-chimaerin has a critical developmental function in ocular motor axon ...
Neuropathy is a major complication that affects nearly half of all patients with diabetes, greatly decreasing their quality of life. Patients experience a wide range of symptoms including pain, numbness, weakness and other morbidities. While its pathogenesis has been the focus of extensive research, there are still few effective treatment options available for this disease. The discovery of novel molecular targets underlying this diabetic neuropathy may lead to the development of new, more effective therapeutics. DLC2, a Rho GTPase-activating protein with specific activity for RhoA, was shown to be involved in pain signaling. Mice deficient for this protein (DLC2-/-) have increased RhoA activity in their peripheral nerves, and have heightened pain responses compared to wild type (DLC2+/+) in acute pain tests, displaying increased sensitivity to noxious thermal and inflammatory stimuli. DLC2-/- mice also show elevated blood glucose levels, lower body weight and increased sensitivity to blood ...
FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the GIT protein family, which interact with G protein-coupled receptor kinases and possess ADP-ribosylation factor (ARF) GTPase-activating protein (GAP) activity. GIT proteins traffic between cytoplasmic complexes, focal adhesions, and the cell periphery, and interact with Pak interacting exchange factor beta (PIX) to form large oligomeric complexes that transiently recruit other proteins. GIT proteins regulate cytoskeletal dynamics and participate in receptor internalization and membrane trafficking. This gene has been shown to repress lamellipodial extension and focal adhesion turnover, and is thought to regulate cell motility. This gene undergoes extensive alternative splicing to generate multiple isoforms, but the full-length nature of some of these variants has not been determined. The various isoforms have functional differences, with respect to ARF GAP activity ...
CIN85 is a multidomain adaptor protein involved in Cbl-mediated down-regulation of epidermal growth factor (EGF) receptors. CIN85 src homology 3 domains specifically bind to a proline-arginine (PxxxPR) motif in Cbl, and this association seems to be important for EGF receptor endocytosis. Here, we report identification of novel CIN85 effectors, all containing one or more PxxxPR motifs, that are indispensable for their mutual interactions. These effectors include phosphatidyl-inositol phosphatases SHIP-1 and synaptojanin 2B1, Arf GTPase-activating proteins ASAP1 and ARAP3, adaptor proteins Hip1R and STAP1, and a Rho exchange factor, p115Rho GEF. Acting as a molecular scaffold, CIN85 clusters its effectors and recruits them to high-molecular-weight complexes in cytosolic extracts of cells. Further characterization of CIN85 binding to ASAP1 revealed that formation of the complex is independent on cell stimulation. Overexpression of ASAP1 increased EGF receptor recycling, whereas ASAP1 containing ...
Cellular signaling downstream of Ras is highly diversified and may involve many different effector molecules. A potential candidate is AF6 which was originally identified as a fusion to ALL-1 in acute myeloid leukemia. In the present work the interaction between Ras and AF6 is characterized and compared with other effectors. The binding characteristics are quite similar to Raf and RalGEF, i.e. nucleotide dissociation as well as GTPase-activating protein activity are inhibited, whereas the intrinsic GTPase activity of Ras is unperturbed by AF6 binding. Particularly, the dynamics of interaction are similar to Raf and RalGEF with a lifetime of the Ras. AF6 complex in the millisecond range. As probed by 31P NMR spectroscopy one of two major conformational states of Ras is stabilized by the interaction with AF6. Looking at the affinities of AF6 to a number of Ras mutants in the effector region, a specificity profile emerges distinct from that of other effector molecules. This finding may be useful in ...
PIKE-A (PIKE-activating gene differs from PIKE-S with the addition of a 40-kDa C-terminal extension containing Arf-GAP and two ankyrin-repeat domains. and peripheral bloodstream leukocytes (4-6). Weve proven that PIKE-A is certainly coamplified with CDK4 on chromosome 12 in a number of human malignancies including sarcoma RG7112 neuroblastoma and glioblastoma (32). PIKE-A is certainly readily discovered in 12q-amplified cell lines including RMS13 rhabdomyosarcoma and OSA osteosarcoma however not in regular muscles (6). PIKE-A provides the GTPase PH ArfGAP and two Ankyrin repeats domains within PIKE-L but does not have the N-terminal proline-rich area which binds proteins 4.1N PLC-γ1 and PI3-kinase. PIKE-A particularly binds to energetic Akt and up-regulates its activity within a GTP-dependent way mediating human cancers cell invasion (32). Akt/PKB is an essential regulator of divergent cellular procedures including apoptosis proliferation fat burning capacity and differentiation. Constitutive ...
Complete information for TBC1D3F gene (Protein Coding), TBC1 Domain Family Member 3F, including: function, proteins, disorders, pathways, orthologs, and expression. GeneCards - The Human Gene Compendium
Expression of RABGAP1 (GAPCenA, TBC1D11) in bronchus tissue. Antibody staining with HPA041651 and HPA072273 in immunohistochemistry.
We identified six novel splicing events of ITSN1 transcripts that do not introduce premature termination codon. Different combinations of these splicing events could generate 28 isoforms of ITSN1. The isoforms differ in their domain organization, interaction with protein partners, localization in different tissues and stages of development. The role of alternative splicing was clearly demonstrated in case of ITSN1 microexon 20 splicing that provides a mechanism for tissuespecific control of protein protein interactions in neurons. Using mutational analysis we found that neuron-specific insertion of a microexon 20 leads to regulation of the SH3A domain specificity due to the shifting of negatively charged amino acids towards the interaction interface. Neuronspecific isoform of the SH3A domain binds with significantly higher affinity endocytic proteins dynamin 1 and synaptojanin 1, as well as GTPase-activating protein CdGAP, while the ubiquitously expressed isoform preferentially interacts with ...
GTPase-activating protein for Gpa1p, regulates desensitization to alpha factor pheromone; also required to prevent receptor-independent signaling of the mating pathway; member of the RGS (regulator of G-protein signaling) ...
The PDB archive contains information about experimentally-determined structures of proteins, nucleic acids, and complex assemblies. As a member of the wwPDB, the RCSB PDB curates and annotates PDB data according to agreed upon standards. The RCSB PDB also provides a variety of tools and resources. Users can perform simple and advanced searches based on annotations relating to sequence, structure and function. These molecules are visualized, downloaded, and analyzed by users who range from students to specialized scientists.
A method of forming air gaps within a solid structure is provided. In this method, a sacrificial material is covered by an overlayer. The sacrificial material is then removed through the overlayer to leave an air gap. Such air gaps are particularly useful as insulation between metal lines in an electronic device such as an electrical interconnect structure. Structures containing air gaps are also provided.