The CSK Antibody from MyBioSource.com is a Rabbit Polyclonal antibody. This antibody recognizes Human, Mouse, and Rat antigen. The CSK Antibody has been shown to work in the following applications: ELISA, Immunocytochemistry, Immunofluorescence, and Western Blot.
Description
Function: Non-receptor tyrosine-protein kinase that plays an important role in the regulation of cell growth, differentiation, migration and immune response. Phosphorylates tyrosine residues located in the C-terminal tails of Src-family kinases (SFKs) including LCK, SRC, HCK, FYN, LYN or YES1. Upon tail phosphorylation, Src-family members engage in intramolecular interactions between the phosphotyrosine tail and the SH2 domain that result in an inactive conformation. To inhibit SFKs, CSK is recruited to the plasma membrane via binding to transmembrane proteins or adapter proteins located near the plasma membrane. Suppresses signaling by various surface receptors, including T-cell receptor (TCR) and B-cell receptor (BCR) by phosphorylating and maintaining inactive several positive effectors such as FYN or LCK.
Subunit Structure: Homodimer (via SH3-domain) (PubMed:19888460). Interacts with PTPN22 (PubMed:15208781). Interacts with phosphorylated SIT1, PAG1, LIME1 and TGFB1I1; these interactions serve to recruit CSK to the membrane where it can phosphorylate and inhibit Src-family kinases (PubMed:11433379, PubMed:10790433, PubMed:14610046, PubMed:10838081). Interacts with SRCIN1 (PubMed:17525734). Interacts with RHOH (PubMed:20851766). Interacts (via SH2 domain) with SCIMP (PubMed:21930792).
Post-translational Modifications: Phosphorylated at Ser-364 by PKA, leading to increased activity. Autophosphorylated.
Similarity: The architecture of this protein is similar to that of Src-family kinases (SFKs) with one N-terminal SH3 domain, one SH2 domain, and a C-terminal kinase domain. Belongs to the protein kinase superfamily. Tyr protein kinase family. CSK subfamily