Introduction
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Diacylglycerol acyltransferase (DGAT) is a membrane protein that synthesizes triacylglycerides from its two substrates diacylglycerol (DAG) and fatty acyl-CoA for dietary fat absorption and fat storage. DGAT can be found expressed in the small intestine’s epithelial cells, in the liver where it synthesizes fat for storage, and in the female mammary glands where it produces fat for milk. DGAT is a member of the membrane-bound O- acyltransferases (MBOAT) family. All of the enzymes within this family are transmembrane enzymes that acylate lipids or proteins. Additionally, MBOAT enzymes have a conserved MBOAT core, a channel-like region that acts as the enzyme’s active site. Another feature of note within this MBOAT core is the conserved catalytic Histidine.
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Structural highlights