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PDB 2dn8 EBI.png
Available structures
PDB Ortholog search: PDBe RCSB
Aliases ACACB, ACC2, ACCB, HACC275, acetyl-CoA carboxylase beta
External IDs MGI: 2140940 HomoloGene: 74382 GeneCards: ACACB
Gene location (Human)
Chromosome 12 (human)
Chr. Chromosome 12 (human)[1]
Chromosome 12 (human)
Genomic location for ACACB
Genomic location for ACACB
Band 12q24.11 Start 109,116,595 bp[1]
End 109,268,226 bp[1]
Species Human Mouse
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC) Chr 12: 109.12 – 109.27 Mb Chr 12: 114.15 – 114.25 Mb
PubMed search [3] [4]
View/Edit Human View/Edit Mouse

Acetyl-CoA carboxylase 2 also known as ACC-beta or ACC2 is an enzyme that in humans is encoded by the ACACB gene.[5][6]


Acetyl-CoA carboxylase (ACC) is a complex multifunctional enzyme system. ACC is a biotin-containing enzyme which catalyzes the carboxylation of acetyl-CoA to malonyl-CoA, the rate-limiting step in fatty acid synthesis. ACC-beta is thought to control fatty acid oxidation by means of the ability of malonyl-CoA to inhibit carnitine palmitoyltransferase I, the rate-limiting step in fatty acid uptake and oxidation by mitochondria. ACC-beta may be involved in the regulation of fatty acid oxidation, rather than fatty acid biosynthesis.[5]

Clinical implications[edit]

Human acetyl-CoA carboxylase has recently become a target in the design of new anti-obesity drugs.[7] However, when the gene for ACC2 was knocked out in mice, no change in body weight was observed relative to normal mice.[8] This result suggests inhibition of ACC2 by drugs may be an ineffective method of treating obesity.


  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000076555 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000042010 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". 
  4. ^ "Mouse PubMed Reference:". 
  5. ^ a b "Entrez Gene: acetyl-Coenzyme A carboxylase beta". 
  6. ^ Widmer J, Fassihi KS, Schlichter SC, Wheeler KS, Crute BE, King N, Nutile-McMenemy N, Noll WW, Daniel S, Ha J, Kim KH, Witters LA (June 1996). "Identification of a second human acetyl-CoA carboxylase gene". The Biochemical Journal. 316 ( Pt 3) (3): 915–22. PMC 1217437Freely accessible. PMID 8670171. 
  7. ^ Corbett JW, Harwood JH (November 2007). "Inhibitors of mammalian acetyl-CoA carboxylase". Recent Patents on Cardiovascular Drug Discovery. 2 (3): 162–80. doi:10.2174/157489007782418928. PMID 18221116. 
  8. ^ Olson DP, Pulinilkunnil T, Cline GW, Shulman GI, Lowell BB (April 2010). "Gene knockout of Acc2 has little effect on body weight, fat mass, or food intake". Proceedings of the National Academy of Sciences of the United States of America. 107 (16): 7598–603. doi:10.1073/pnas.0913492107. PMC 2867727Freely accessible. PMID 20368432. 

Further reading[edit]

External links[edit]