PAK1 pSer204 antibody Ab
- Known as:
- PAK1 pSer204 (anti-) Antibody
- Catalog number:
- 1488160
- Product Quantity:
- EUR
- Category:
- -
- Supplier:
- Acris antibodies
- Gene target:
- PAK1 pSer204 antibody
Related genes to: PAK1 pSer204 antibody Ab
- Gene:
- PAK1 NIH gene
- Name:
- p21 (RAC1) activated kinase 1
- Previous symbol:
- -
- Synonyms:
- -
- Chromosome:
- 11q13.5-q14.1
- Locus Type:
- gene with protein product
- Date approved:
- 1997-12-05
- Date modifiied:
- 2018-02-13
- Gene:
- PKN1 NIH gene
- Name:
- protein kinase N1
- Previous symbol:
- PRKCL1
- Synonyms:
- DBK, PRK1, PKN, MGC46204, PAK1
- Chromosome:
- 19p13.12
- Locus Type:
- gene with protein product
- Date approved:
- 1997-10-10
- Date modifiied:
- 2014-11-19
Related products to: PAK1 pSer204 antibody Ab
Related articles to: PAK1 pSer204 antibody Ab
- Although the involvement of Rho proteins in the pathogenesis of vascular diseases is well studied, little is known about the role of their upstream regulators, the Rho guanine nucleotide exchange factors (RhoGEFs). Here, we sought to identify the RhoGEFs involved in monocyte chemotactic protein 1 (MCP1)-induced vascular wall remodeling. We found that, among the RhoGEFs tested, MCP1 induced tyrosine phosphorylation of p115 RhoGEF but not of PDZ RhoGEF or leukemia-associated RhoGEF in human aortic smooth muscle cells (HASMCs). Moreover, p115 RhoGEF inhibition suppressed MCP1-induced HASMC migration and proliferation. Consistent with these observations, balloon injury (BI) induced p115 RhoGEF tyrosine phosphorylation in rat common carotid arteries, and siRNA-mediated down-regulation of its levels substantially attenuated BI-induced smooth muscle cell migration and proliferation, resulting in reduced neointima formation. Furthermore, depletion of p115 RhoGEF levels also abrogated MCP1- or BI-induced Rac1-NFATc1-cyclin D1-CDK6-PKN1-CDK4-PAK1 signaling, which, as we reported previously, is involved in vascular wall remodeling. Our findings also show that protein kinase N1 (PKN1) downstream of Rac1-cyclin D1/CDK6 and upstream of CDK4-PAK1 in the p115 RhoGEF-Rac1-NFATc1-cyclin D1-CDK6-PKN1-CDK4-PAK1 signaling axis is involved in the modulation of vascular wall remodeling. Of note, we also observed that CCR2-G-Fyn signaling mediates MCP1-induced p115 RhoGEF and Rac1 GTPase activation. These findings suggest that p115 RhoGEF is critical for MCP1-induced HASMC migration and proliferation and for injury-induced neointima formation by modulating Rac1-NFATc1-cyclin D1-CDK6-PKN1-CDK4-PAK1 signaling. - Source: PubMed
Publication date: 2017/06/27
Singh Nikhlesh KJanjanam JagadeeshRao Gadiparthi N - Recent genome-wide RNAi screens have identified >842 human genes that affect the human immunodeficiency virus (HIV) cycle. The list of genes implicated in infection differs between screens, and there is minimal overlap. A reason for this variance is the interdependence of HIV infection and host cell function, producing a multitude of indirect or pleiotropic cellular effects affecting the viral infection during RNAi screening. To overcome this, the authors devised a 15-dimensional phenotypic profile to define the viral infection block induced by CD4 silencing in HeLa cells. They demonstrate that this phenotypic profile excludes nonspecific, RNAi-based side effects and viral replication defects mediated by silencing of housekeeping genes. To achieve statistical robustness, the authors used automatically annotated RNAi arrays for seven independent genome-wide RNAi screens. This identified 56 host genes, which reliably reproduced CD4-like phenotypes upon HIV infection. The factors include 11 known HIV interactors and 45 factors previously not associated with HIV infection. As proof of concept, the authors confirmed that silencing of PAK1, Ku70, and RNAseH2A impaired HIV replication in Jurkat cells. In summary, multidimensional, visual profiling can identify genes required for HIV infection. - Source: PubMed
Publication date: 2011/08/12
Genovesio AugusteKwon Yong-JunWindisch Marc PKim Nam YoulChoi Seo YeonKim Hi ChulJung SungyongMammano FabrizioPerrin VirginieBoese Annette SCasartelli NicolettaSchwartz OlivierNehrbass UlfEmans Neil - PKN is a serine/threonine protein kinase, which has a catalytic domain highly homologous to that of protein kinase C (PKC) in the carboxyl-terminal region and three repeats of the antiparallel coiled coil (ACC) domain in the amino-terminal region. Mammalian PKN has three isoforms each derived from different genes, PKN1 (PKNalpha/PRK1/PAK1), PKN2 (PRK2/PAK2/PKNgamma), and PKN3 (PKNbeta). PKN isoforms show different enzymatic properties and tissue distributions and have been implicated in various distinct cellular processes (reviewed in Mukai [2003]). This chapter discusses methods to prepare purified enzymes and to assay substrate phosphorylation activities. - Source: PubMed
Mukai HideyukiOno Yoshitaka - Cardiolipin- or protease-activated protein kinase, isolated from rat liver cytosol and originally named liver PAK-1, was found to be the natural form of protein kinase N (PKN) by comparing the sequences of 43 tryptic peptides of the purified liver enzyme and determining the corresponding liver cDNA sequence. These analyses also identified (i) Arg-546 as the major site of proteolytic activation, (ii) the protease resistance of the C-terminal extension beyond the catalytic domain, and (iii) in vivo stoichiometric phosphorylation of Thr-778 in the mature enzyme. Homology modeling of the catalytic domain indicated that phosphothreonine 778 functions as an anchoring site similar to Thr-197 in cAMP-dependent protein kinase, which stabilizes an active site compatible with preferred substrate sequences of PAK-1/PKN. Sigmoidal autophosphorylation kinetics and increased S6-(229-239) peptide kinase activity following preincubation with ATP suggested phosphorylation-dependent activation of PAK-1/PKN. The onset of activation corresponded with phosphorylation of the regulatory domain site Ser-377 (located within a spectrin homology region), followed by Thr-504 (within a limited protein kinase C homology region), and, to a lesser extent, Thr-64 (in the RhoA-binding region). Several additional sites in the hinge region adjacent to a PEST protein degradation signal were selectively autophosphorylated following cardiolipin activation. Overall, these observations suggest that the regulation of this class of protein kinase involves complex interactions among phosphorylation-, lipid-, and other ligand-dependent activation events. - Source: PubMed
Peng BMorrice N AGroenen L CWettenhall R E