PLCG1 Antibody – Rabbit Polyclonal

The protein encoded by this gene catalyzes the formation of inositol 1,4,5-trisphosphate and diacylglycerol from phosphatidylinositol 4,5-bisphosphate. This reaction uses calcium as a cofactor and plays an important role in the intracellular transduction of receptor-mediated tyrosine kinase activators. For example, when activated by SRC, the encoded protein causes the Ras guanine nucleotide exchange factor RasGRP1 to translocate to the Golgi, where it activates Ras. Also, this protein has been shown to be a major substrate for heparin-binding growth factor 1 (acidic fibroblast growth factor)-activated tyrosine kinase. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq]

Function: Plays a role in actin reorganization and cell migration. The production of the second messenger molecules diacylglycerol (DAG) and inositol 1,4,5-trisphosphate (IP3) is mediated by activated phosphatidylinositol-specific phospholipase C enzymes. Major substrate for heparin-binding growth factor 1 (acidic fibroblast growth factor)-activated tyrosine kinase. Ref.17

Catalytic activity: 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + H2O = 1D-myo-inositol 1,4,5-trisphosphate + diacylglycerol.

Cofactor: Calcium.

Subunit structure: Interacts with AGAP2 via its SH3 domain

By similarity. Interacts with phosphorylated LAT upon TCR activation. Interacts with the Pro-rich domain of TNK1 via its SH3 domain. Associates with BLNK, VAV1, GRB2 and NCK1 in a B-cell antigen receptor-dependent fashion. Interacts with CBLB in activated T-cells; which inhibits phosphorylation. Interacts with SHB. Interacts via its SH3 domain with the Arg/Gly-rich-flanked Pro-rich domains of KHDRBS1/SAM68. This interaction is selectively regulated by arginine methylation of KHDRBS1/SAM68. Interacts with INPP5D/SHIP1, THEMIS and CLNK

By similarity. Interacts with RALGPS1. Interacts (via SH3 domain) with HEV ORF3 protein. Interacts (via the SH2 domains) with VIL1 (phosphorylated at C-terminus tyrosine phosphorylation sites). Ref.6 Ref.7 Ref.8 Ref.9 Ref.10 Ref.13 Ref.17

Subcellular location: Cell projection › lamellipodium. Cell projection › ruffle. Note: Rapidly redistributed to ruffles and lamellipodia structures in response to epidermal growth factor (EGF) treatment. Ref.17

Domain: The SH3 domain mediates interaction with CLNK

By similarity. The SH3 domain also mediates interaction with RALGPS1. Ref.26

Post-translational modification: The receptor-mediated activation of PLC-gamma-1 and PLC-gamma-2 involves their phosphorylation by tyrosine kinases in response to ligation of a variety of growth factor receptors and immune system receptors. May be dephosphorylated by PTPRJ. Ref.11 Ref.12 Ref.14 Ref.15 Ref.16 Ref.18 Ref.19 Ref.20 Ref.21 Ref.22 Ref.23 Ref.24Ubiquitinated by CBLB in activated T-cells

Sequence similarities: Contains 1 C2 domain.Contains 1 EF-hand domain.Contains 2 PH domains.Contains 1 PI-PLC X-box domain.Contains 1 PI-PLC Y-box domain.Contains 2 SH2 domains.Contains 1 SH3 domain.