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. 1988 Aug;85(16):5784–5788. doi: 10.1073/pnas.85.16.5784

Structure of the coding sequence and primary amino acid sequence of acetyl-coenzyme A carboxylase.

F López-Casillas 1, D H Bai 1, X C Luo 1, I S Kong 1, M A Hermodson 1, K H Kim 1
PMCID: PMC281849  PMID: 2901088

Abstract

Acetyl-coenzyme A carboxylase (Ac-CoA carboxylase; EC 6.4.1.2) catalyzes the rate-limiting reaction in long-chain fatty acid biosynthesis. To investigate the mechanism of genetic control of expression of Ac-CoA carboxylase and the relationship between its structure and function, cDNA clones for Ac-CoA carboxylase were isolated. The complete coding sequence contains 7035 bases; it encodes a polypeptide chain of 2345 amino acids having a Mr of 265,220. The sequences of several CNBr peptides of Ac-CoA carboxylase were localized within the predicted protein sequence as were those peptides that contain the sites for phosphorylation. The deduced protein contains one putative site for biotinylation in the NH2-terminal half. The "conserved" biotinylation site peptide, Met-Lys-Met, is preceded by valine, whereas alanine is found in a similar position in all other known biotin-containing proteins. The primary sequences of Ac-CoA carboxylase and carbamoyl phosphate synthetase exhibit substantial identity.

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Selected References

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