Acetyl-CoA carboxytransferase

Acetyl-CoA carboxytransferase
The enzyme as folded by AlphaFold
Identifiers
EC no.2.1.3.15
Databases
BRENDAenzyme data
ExPASyNiceZyme view
KEGGenzyme entry
MetaCycmetabolic pathway
Rheareactions
PDB structuresRCSB PDB PDBe PDBsum
Search
PMCarticles
PubMedarticles
NCBIproteins

Acety-CoA carboxytransferase (known also as accAD and N6-carboxybiotinyl-L-lysine:acetyl-CoA:carboxytransferase) is a transferase enzyme that catalyses the transfer of a carboxyl group from a biotinylated biotin carboxyl carrier protein (abbrev. BCCP) to acetyl coenzyme A, yielding malonyl-CoA.[1] In some species, this is part of a multi-domain protein that also has the carrier protein as well as biotin carboxylase. Some enzymes can also carry out the carboxylation of propanonyl-CoA and butanoyl-CoA. The enzyme catalyzes the following reaction,

N6-carboxybiotinylysyl + acetyl-CoA = N6-biotinylysyl + malonyl-CoA

The enzyme characterised from Acidianus brierleyi is involved in several biochemical pathways, including the 3-hydroxypropanoate cycle, 4-hydroxybutanate cycle, the assembly of biotin-carboxyl carrier proteins, candicidin biosynthesis, fatty acid biosynthesis and glyoxylate assimilation.[2][3]

References

  1. ↑ Enzyme 2.1.3.15 at KEGG Pathway Database.
  2. ↑ Bilder, Patrick; Lightle, Sandra; Bainbridge, Graeme; Ohren, Jeffrey; Finzel, Barry; Sun, Fang; Holley, Susan; Al-Kassim, Loola; Spessard, Cindy; Melnick, Michael; Newcomer, Marcia; Waldrop, Grover L. (2006). "The Structure of the Carboxyltransferase Component of Acetyl-CoA Carboxylase Reveals a Zinc-Binding Motif Unique to the Bacterial Enzyme,". Biochemistry. 45 (6): 1712–1722. doi:10.1021/bi0520479. PMID 16460018.
  3. ↑ Chuakrut, Songkran; Arai, Hiroyuki; Ishii, Masaharu; Igarashi, Yasuo (2003). "Characterization of a Bifunctional Archaeal Acyl Coenzyme a Carboxylase". Journal of Bacteriology. 185 (3): 938–947. doi:10.1128/JB.185.3.938-947.2003. PMC 142822. PMID 12533469.