Protein kinase Cmu (PKCmu) is a novel member of the protein kinase C (PKC) family that differs from the other isoenzymes in structural and enzymatic properties. It is characterized by the presence of a pleckstrin homology (PH) domain and an amino-terminal hydrophobic region and has substrate specificity distinct from other PKC isoforms. PKCmu is a ubiquitous PKC isotype with the highest expression in the thymus, lung and peripheral blood mononuclear cells (1). PKCmu forms a complex in vivo with a phosphatidylinositol 4-kinase and a phosphatidylinositol-4-phosphate 5-kinase. A region of PKCmu between the amino-terminal transmembrane domain and the pleckstrin homology domain is shown to be involved in the association with the lipid kinases (2). PKCmu was also shown to associate with the B cell receptor (BCR) complex and its activity is up-regulated after cross-linking the BCR and CD19 on B cells (3). PKC mu co-precipitates with Syk and phospholipase C-γ 1/2 (PLC γ 1/2) and in vitro phosphorylation of fusion proteins showed that both Syk and PLC γ 1 are potential substrates of PKC mu in vivo. In addition, specific interaction of PKCmu and 14-3-3tau can be shown in the T cell line Jurkat by immunocoprecipitiation and by pulldown assays (4). 14-3-3tau is not a substrate of PKCmu and strongly down-regulates PKCmu kinase activity in vitro. In response to various stimuli, PKC mu activates the mitogen-activated protein kinase (p42/ERK1 MAPK cascade) but does not affect the related c-jun N-terminal kinase or p38 MAPK (5).
序列
PKCmu蛋白,有活性的蛋白产品,又称PKC, Protein kinase C mu.其对应NCBI基因号为5567,NCBI基因别称为PRKACB源,对应Accession号为NM_002731.该蛋白产品又称Active PKCmu, PKCmu, PKC, human PKAmu, active kinase, active kinases, recombinant PKCmu, recombinant PKC, kinase activity assay, protein kinase等.
来源宿主
提供的【PKCmu】PKCmu蛋白,有活性的产品的来源为Sf9昆虫细胞-杆状病毒中重组表达.
溶解建议
提供的PKCmu蛋白,有活性的 产品为液态形式溶解于储存液(50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, 25% 甘油)中.