The function of ENSG00000187021 (PNLIPRP1, pancreatic lipase related protein 1) is as follows. In vitro, it has very low or undetectable lipase activity towards triglycerides, diglycerides, phosphatidylcholine, galactolipids or cholesterol esters (By similarity). Unable to hydrolyze milk fat (in vitro) (PubMed:19824014). {ECO:0000250|UniProtKB:P06857, ECO:0000269|PubMed:19824014}.