Biotin carboxylase
Class of enzymes / From Wikipedia, the free encyclopedia
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In enzymology, a biotin carboxylase (EC 6.3.4.14) is an enzyme that catalyzes the chemical reaction
- ATP + biotin-carboxyl-carrier protein + CO2 ADP + phosphate + carboxybiotin-carboxyl-carrier protein
Biotin carboxylase | |||||||||
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Identifiers | |||||||||
EC no. | 6.3.4.14 | ||||||||
CAS no. | 9075-71-2 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
Gene Ontology | AmiGO / QuickGO | ||||||||
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Biotin carboxylase C-terminal domain | |||||||||
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Identifiers | |||||||||
Symbol | Biotin_carb_C | ||||||||
Pfam | PF02785 | ||||||||
InterPro | IPR005482 | ||||||||
SCOP2 | 1dv1 / SCOPe / SUPFAM | ||||||||
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The three substrates of this enzyme are ATP, biotin-carboxyl-carrier protein (BCCP), and CO2, whereas its three products are ADP, phosphate, and carboxybiotin-carboxyl-carrier protein.
The systematic name of this enzyme class is biotin-carboxyl-carrier-protein:carbon-dioxide ligase (ADP-forming). This enzyme is also called biotin carboxylase (component of acetyl CoA carboxylase). This enzyme participates in fatty acid biosynthesis. This enzyme participates in fatty acid biosynthesis by providing one of the catalytic functions of the Acetyl-CoA carboxylase complex. As previously mentioned, after the carboxybiotin product is formed, the carboxyltransferase unit of the complex will transfer the activated carboxy group from BCCP to Acetyl-CoA, forming a malonate analog known as malonyl-CoA. Malonyl-CoA serves as the primary carbon donor in fatty acid biosynthesis, followed by a series of reduction and dehydration reactions to remove the acyl group.[1]