MBOAT4: Mediates the octanoylation of ghrelin at 'Ser-3'. Can use a variety of fatty acids as substrates including octanoic acid, decanoic acid and tetradecanoic acid. Belongs to the membrane-bound acyltransferase family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Endoplasmic reticulum; Membrane protein, multi-pass; Membrane protein, integral; Transferase; EC 2.3.1.-
Cellular Component: membrane; endoplasmic reticulum; integral to membrane; integral to endoplasmic reticulum membrane
Molecular Function: keto acid formate lyase activity; glucosaminyl-phosphotidylinositol O-acyltransferase activity; S-malonyltransferase activity; 3-hydroxybutyryl-CoA thiolase activity; S-acetyltransferase activity; O-octanoyltransferase activity; O-sinapoyltransferase activity; acyl-CoA N-acyltransferase activity; peptidyl-lysine N6-myristoyltransferase activity; palmitoleoyl [acyl-carrier-protein]-dependent acyltransferase activity; peptidyl-lysine N6-palmitoyltransferase activity; azetidine-2-carboxylic acid acetyltransferase activity; dihydrolipoamide branched chain acyltransferase activity; succinyltransferase activity; Ras palmitoyltransferase activity; palmitoyltransferase activity; C-acyltransferase activity; C-palmitoyltransferase activity; dihydrolipoamide S-acyltransferase activity; protein-cysteine S-acyltransferase activity; N-acetyltransferase activity; serine O-acyltransferase activity; malonyltransferase activity; octanoyltransferase activity; O-succinyltransferase activity; O-palmitoyltransferase activity; sterol O-acyltransferase activity; 3-ketopimelyl-CoA thiolase activity; carnitine O-acyltransferase activity; S-succinyltransferase activity; N-acyltransferase activity; UDP-3-O-[3-hydroxymyristoyl] glucosamine N-acyltransferase activity; N-palmitoyltransferase activity; O-acyltransferase activity; acylglycerol O-acyltransferase activity; O-acetyltransferase activity; transferase activity; benzoyl acetate-CoA thiolase activity; sinapoyltransferase activity; protein-cysteine S-myristoyltransferase activity; S-acyltransferase activity; myristoyltransferase activity; N-succinyltransferase activity; acetyltransferase activity; transferase activity, transferring acyl groups; L-2-aminoadipate N-acetyltransferase activity
Biological Process: peptidyl-serine octanoylation
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