The function of PLCD1 (phospholipase C delta 1, ENSG00000187091) is as follows. 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 (PubMed:15331768, PubMed:9188725). Essential for trophoblast and placental development (By similarity). Binds phosphatidylinositol 4,5- bisphosphate (PubMed:15331768, PubMed:7890667, PubMed:9188725). {ECO:0000250|UniProtKB:Q8R3B1, ECO:0000269|PubMed:15331768, ECO:0000269|PubMed:7890667, ECO:0000269|PubMed:9188725}.