MGP Database

New search | Record Overview | Ontology/Pathway Information | Domain Information | UniProt Annotations | Related Proteins
MGP001834

UniProt Annotations

Entry Information
Gene Namelipoprotein lipase
Protein EntryLIPL_HUMAN
UniProt IDP06858
SpeciesHuman
Comments
Comment typeDescription
Catalytic ActivityTriacylglycerol + H(2)O = diacylglycerol + a carboxylate. {ECO:0000269|PubMed:11342582}.
DiseaseLipoprotein lipase deficiency (LPL deficiency) [MIM:238600]: Recessive disorder usually manifesting in childhood. On a normal diet, patients often present with abdominal pain, hepatosplenomegaly, lipemia retinalis, eruptive xanthomata, and massive hypertriglyceridemia, sometimes complicated with acute pancreatitis. {ECO:0000269|PubMed:10660334, ECO:0000269|PubMed:10787434, ECO:0000269|PubMed:11068186, ECO:0000269|PubMed:11099402, ECO:0000269|PubMed:11134145, ECO:0000269|PubMed:11441134, ECO:0000269|PubMed:12204001, ECO:0000269|PubMed:12641539, ECO:0000269|PubMed:12966036, ECO:0000269|PubMed:1400331, ECO:0000269|PubMed:1479292, ECO:0000269|PubMed:14984478, ECO:0000269|PubMed:15185149, ECO:0000269|PubMed:1521525, ECO:0000269|PubMed:15256764, ECO:0000269|PubMed:15877202, ECO:0000269|PubMed:1598907, ECO:0000269|PubMed:1619366, ECO:0000269|PubMed:1639392, ECO:0000269|PubMed:1674945, ECO:0000269|PubMed:1702428, ECO:0000269|PubMed:1730727, ECO:0000269|PubMed:1752947, ECO:0000269|PubMed:1907278, ECO:0000269|PubMed:1969408, ECO:0000269|PubMed:1975597, ECO:0000269|PubMed:2010533, ECO:0000269|PubMed:2038366, ECO:0000269|PubMed:2110364, ECO:0000269|PubMed:2121025, ECO:0000269|PubMed:7647785, ECO:0000269|PubMed:7806969, ECO:0000269|PubMed:7906986, ECO:0000269|PubMed:7912254, ECO:0000269|PubMed:7999071, ECO:0000269|PubMed:8077845, ECO:0000269|PubMed:8096693, ECO:0000269|PubMed:8135797, ECO:0000269|PubMed:8288243, ECO:0000269|PubMed:8301230, ECO:0000269|PubMed:8325986, ECO:0000269|PubMed:8486765, ECO:0000269|PubMed:8728326, ECO:0000269|PubMed:8778602, ECO:0000269|PubMed:8858123, ECO:0000269|PubMed:8872057, ECO:0000269|PubMed:8956048, ECO:0000269|PubMed:8956052, ECO:0000269|PubMed:9279761, ECO:0000269|PubMed:9298816, ECO:0000269|PubMed:9498099, ECO:0000269|PubMed:9662394, ECO:0000269|PubMed:9714430, ECO:0000269|PubMed:9719626}. Note=The disease is caused by mutations affecting the gene represented in this entry.
FunctionThe primary function of this lipase is the hydrolysis of triglycerides of circulating chylomicrons and very low density lipoproteins (VLDL). Binding to heparin sulfate proteogylcans at the cell surface is vital to the function. The apolipoprotein, APOC2, acts as a coactivator of LPL activity in the presence of lipids on the luminal surface of vascular endothelium (By similarity). {ECO:0000250}.
PtmTyrosine nitration after lipopolysaccharide (LPS) challenge down-regulates the lipase activity. {ECO:0000250}.
SimilarityBelongs to the AB hydrolase superfamily. Lipase family. {ECO:0000305}.
SimilarityContains 1 PLAT domain. {ECO:0000255|PROSITE- ProRule:PRU00152}.
Subcellular LocationCell membrane {ECO:0000250}; Lipid-anchor, GPI-anchor {ECO:0000250}. Secreted {ECO:0000250}. Note=Locates to the plasma membrane of microvilli of hepatocytes with triacyl- glycerol-rich lipoproteins (TRL). Some of the bound LPL is then internalized and located inside non-coated endocytic vesicles (By similarity). {ECO:0000250}.
SubunitHomodimer (By similarity). Interacts with APOC2; the interaction activates LPL activity in the presence of lipids. Interacts with GPIHBP1. {ECO:0000250, ECO:0000269|PubMed:17997385}.
Web ResourceName=SHMPD; Note=The Singapore human mutation and polymorphism database; URL="http://shmpd.bii.a-star.edu.sg/gene.php?genestart=A&genename=LPL";
Web ResourceName=Wikipedia; Note=Lipoprotein lipase entry; URL="http://en.wikipedia.org/wiki/Lipoprotein_lipase";
  logo