PLCZ1 Blocking Peptide

The protein encoded by this gene is a member of the phosphoinositide-specific phospholipase C family. Members in this family, classified into six isotypes that are tissue- and organ-specific, hydrolyze phosphatidylinositol 4,5-bisphosphate just before the phosphate group to yield diacylglycerol and inositol 1,4,5-trisphosphate. This protein localizes to the acrosome in spermatozoa and elicits Ca(2+) oscillations and egg activation during fertilization that leads to early embryonic development. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

PLCZ1: 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. In vitro, hydrolyzes PtdIns(4,5)P2 in a Ca(2+)- dependent manner. Triggers intracellular Ca(2+) oscillations in oocytes solely during M phase and is involved in inducing oocyte activation and initiating embryonic development up to the blastocyst stage. Is therefore a strong candidate for the egg- activating soluble sperm factor that is transferred from the sperm into the egg cytoplasm following gamete membrane fusion. May exert an inhibitory effect on phospholipase-C-coupled processes that depend on calcium ions and protein kinase C, including CFTR trafficking and function. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Phospholipase; Carbohydrate Metabolism - inositol phosphate; EC 3.1.4.11

Chromosomal Location of Human Ortholog: 12p12.3

Cellular Component: perinuclear region of cytoplasm; nucleus; cytosol

Molecular Function: signal transducer activity; calcium ion binding; phosphoinositide phospholipase C activity

Biological Process: inositol phosphate metabolic process; calcium ion transport; multicellular organismal development; egg activation; lipid catabolic process