Aliases for PRKCH Gene
External Ids for PRKCH Gene
Previous HGNC Symbols for PRKCH Gene
Previous GeneCards Identifiers for PRKCH Gene
Protein kinase C (PKC) is a family of serine- and threonine-specific protein kinases that can be activated by calcium and the second messenger diacylglycerol. PKC family members phosphorylate a wide variety of protein targets and are known to be involved in diverse cellular signaling pathways. PKC family members also serve as major receptors for phorbol esters, a class of tumor promoters. Each member of the PKC family has a specific expression profile and is believed to play a distinct role in cells. The protein encoded by this gene is one of the PKC family members. It is a calcium-independent and phospholipids-dependent protein kinase. It is predominantly expressed in epithelial tissues and has been shown to reside specifically in the cell nucleus. This protein kinase can regulate keratinocyte differentiation by activating the MAP kinase MAPK13 (p38delta)-activated protein kinase cascade that targets CCAAT/enhancer-binding protein alpha (CEBPA). It is also found to mediate the transcription activation of the transglutaminase 1 (TGM1) gene. [provided by RefSeq, Jul 2008]
GeneCards Summary for PRKCH Gene
PRKCH (Protein Kinase C, Eta) is a Protein Coding gene. Diseases associated with PRKCH include stroke, ischemic. Among its related pathways are MAPK signaling pathway and Glioma. GO annotations related to this gene include enzyme binding and protein kinase C activity. An important paralog of this gene is PRKCB.
UniProtKB/Swiss-Prot for PRKCH Gene
Calcium-independent, phospholipid- and diacylglycerol (DAG)-dependent serine/threonine-protein kinase that is involved in the regulation of cell differentiation in keratinocytes and pre-B cell receptor, mediates regulation of epithelial tight junction integrity and foam cell formation, and is required for glioblastoma proliferation and apoptosis prevention in MCF-7 cells. In keratinocytes, binds and activates the tyrosine kinase FYN, which in turn blocks epidermal growth factor receptor (EGFR) signaling and leads to keratinocyte growth arrest and differentiation. Associates with the cyclin CCNE1-CDK2-CDKN1B complex and inhibits CDK2 kinase activity, leading to RB1 dephosphorylation and thereby G1 arrest in keratinocytes. In association with RALA activates actin depolymerization, which is necessary for keratinocyte differentiation. In the pre-B cell receptor signaling, functions downstream of BLNK by up-regulating IRF4, which in turn activates L chain gene rearrangement. Regulates epithelial tight junctions (TJs) by phosphorylating occludin (OCLN) on threonine residues, which is necessary for the assembly and maintenance of TJs. In association with PLD2 and via TLR4 signaling, is involved in lipopolysaccharide (LPS)-induced RGS2 down-regulation and foam cell formation. Upon PMA stimulation, mediates glioblastoma cell proliferation by activating the mTOR pathway, the PI3K/AKT pathway and the ERK1-dependent phosphorylation of ELK1. Involved in the protection of glioblastoma cells from irradiation-induced apoptosis by preventing caspase-9 activation. In camptothecin-treated MCF-7 cells, regulates NF-kappa-B upstream signaling by activating IKBKB, and confers protection against DNA damage-induced apoptosis. Promotes oncogenic functions of ATF2 in the nucleus while blocking its apoptotic function at mitochondria. Phosphorylates ATF2 which promotes its nuclear retention and transcriptional activity and negatively regulates its mitochondrial localization.
Protein kinase C (PKC) refers to a family of serine/threonine protein kinases grouped by their activation mechanism. Classical or conventional PKCs (cPKC alpha-, betaI- , betaII- and gamma-) are activated by phosphatidylserine in a calcium dependent manner and can bind diacylglycerol (DAG). The Ca2+ insensitive novel PKCs (nPKCs epsilon-, delta-, theta- and eta- isotypes) are also activated by DAG and phosphatidylserine. The atypical PKCs (aPKCs iota- and zeta-) are insensitive to Ca2+, DAG and phorbol esters. All PKCs isoforms consist of a highly conserved catalytic domain connected to a regulatory domain via a hinge region. The physiological roles of PKCs are vast. This due to PKC phosphorylation and activation of multiple target proteins, which are involved in signal transduction pathways including, but not limited to, receptor desensitization, modulation of membrane structure events, regulation of transcription, regulation of cell growth, immune responses, and in learning and memory.