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Information on EC - acetyl-CoA carboxylase

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IUBMB Comments
This enzyme is a multi-domain polypeptide that catalyses three different activities - a biotin carboxyl-carrier protein (BCCP), a biotin carboxylase that catalyses the transfer of a carboxyl group from hydrogencarbonate to the biotin molecule carried by the carrier protein, and the transfer of the carboxyl group from biotin to acetyl-CoA, forming malonyl-CoA. In some organisms these activities are catalysed by separate enzymes (see EC, biotin carboxylase, and EC, acetyl-CoA carboxytransferase). The carboxylation of the carrier protein requires ATP, while the transfer of the carboxyl group to acetyl-CoA does not.
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The enzyme appears in viruses and cellular organisms
acetyl-coa carboxylase, accase, acetyl coa carboxylase, acetyl-coenzyme a carboxylase, acaca, acc-2, acetyl coenzyme a carboxylase, acetyl-coa carboxylase 1, acc-1, acacb, more
ATP + acetyl-CoA + hydrogencarbonate = ADP + phosphate + malonyl-CoA
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