Protein: DGAT1/2-independent enzyme synthesizing storage lipids (Q96MH6)
Organism: Homo sapiens (Human)
Function: Catalytic subunit of the alternative triglyceride biosynthesis pathway, which mediates formation of triacylglycerol from diacylglycerol and membrane phospholipids. Synthesizes triacylglycerol at the expense of membrane phospholipids, such as phosphatidylcholine (PC) and its ether-linked form (ePC), thereby altering the composition of membranes. The alternative triglyceride biosynthesis pathway is probably required to provide the energy required for rapid growth when fuel sources are limiting. It maintains mitochondrial function during periods of extracellular lipid starvation. Can also use acyl-CoA as donor: acts as a acyl-CoA:monoacylglycerol acyltransferase (MGAT), but also shows acyl-CoA:diacylglycerol acyltransferase (DGAT) activity (By similarity)
Subcellular location: Endoplasmic reticulum membrane ; Multi-pass membrane protein
InterPro domains:
- IPR002123: Phospholipid/glycerol acyltransferase (domain) [111-234]
Sequence:
MIDKNQTCGVGQDSVPYMICLIHILEEWFGVEQLEDYLNFANYLLWVFTPLILLILPYFTIFLLYLTIIFLHIYKRKNVLKEAYSHNLWDGARKTVATLWDGHAAVWHGYEVHGMEKIPEDGPALIIFYHGAIPIDFYYFMAKIFIHKGRTCRVVADHFVFKIPGFSLLLDVFCALHGPREKCVEILRSGHLLAISPGGVREALISDETYNIVWGHRRGFAQVAIDAKVTKNAVQALIDKHQRIPGNIMSALLERFH
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:0005515 (protein binding), GO:0016746 (acyltransferase activity), GO:0016747 (acyltransferase activity, transferring groups other than amino-acyl groups), GO:0008374 (O-acyltransferase activity), GO:0071617 (lysophospholipid acyltransferase activity), GO:0016411 (acylglycerol O-acyltransferase activity), GO:0042171 (lysophosphatidic acid acyltransferase activity), GO:0003841 (1-acylglycerol-3-phosphate O-acyltransferase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0009058 (biosynthetic process), GO:0044238 (primary metabolic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0044255 (cellular lipid metabolic process), GO:0044249 (cellular biosynthetic process), GO:1901576 (organic substance biosynthetic process), GO:1901564 (organonitrogen compound metabolic process), GO:0006629 (lipid metabolic process), GO:0019637 (organophosphate metabolic process), GO:0006793 (phosphorus metabolic process), GO:0046470 (phosphatidylcholine metabolic process), GO:1901566 (organonitrogen compound biosynthetic process), GO:0006796 (phosphate-containing compound metabolic process), GO:0046486 (glycerolipid metabolic process), GO:0008610 (lipid biosynthetic process), GO:0006644 (phospholipid metabolic process), GO:0045017 (glycerolipid biosynthetic process), GO:0090407 (organophosphate biosynthetic process), GO:0006650 (glycerophospholipid metabolic process), GO:0046474 (glycerophospholipid biosynthetic process), GO:0008654 (phospholipid biosynthetic process), GO:0006656 (phosphatidylcholine biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0016020 (membrane), GO:0005737 (cytoplasm), GO:0012505 (endomembrane system), GO:0031984 (organelle subcompartment), GO:0042175 (nuclear outer membrane-endoplasmic reticulum membrane network), GO:0031090 (organelle membrane), GO:0005783 (endoplasmic reticulum), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0098827 (endoplasmic reticulum subcompartment), GO:0043231 (intracellular membrane-bounded organelle), GO:0005789 (endoplasmic reticulum membrane)