Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyPLP-dependent transferases8032411 3000954 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyPLP-dependent transferases8032411 3000954 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APF00202e1dtyA3 A: a+b two layersX: C-terminal domain in some PLP-dependent transferases (From Topology)H: C-terminal domain in some PLP-dependent transferases (From Topology)T: C-terminal domain in some PLP-dependent transferasesF: PF00202ECOD (1.6)
APF00202e1dtyA2 A: a/b three-layered sandwichesX: PLP-dependent transferases (From Topology)H: PLP-dependent transferases (From Topology)T: PLP-dependent transferasesF: PF00202ECOD (1.6)
BPF00202e1dtyB3 A: a+b two layersX: C-terminal domain in some PLP-dependent transferases (From Topology)H: C-terminal domain in some PLP-dependent transferases (From Topology)T: C-terminal domain in some PLP-dependent transferasesF: PF00202ECOD (1.6)
BPF00202e1dtyB2 A: a/b three-layered sandwichesX: PLP-dependent transferases (From Topology)H: PLP-dependent transferases (From Topology)T: PLP-dependent transferasesF: PF00202ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF00202Aminotransferase class-III (Aminotran_3)Aminotransferase class-III- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
ADENOSYLMETHIONINE-8-AMINO-7-OXONONANOATE AMINOTRANSFERASE

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
adenosylmethionine--8-amino-7-oxononanoate transaminase  M-CSA #249

Adenosylmethionine--8-amino-7-oxononanoate transaminase (BioA) is a PLP-dependent enzyme that functions in biotin synthesis. It utilises S-adenosyl-L-methionine (SAM) to transaminate the biotin precurson 7-keto-8-aminopelargonic acid and form the next intermediate in the pathway, 7, 8-diaminopelargonic acid. It is the only animotransferase known to utilise SAM as an amino donor. S-adenosylhomocysteine can also act as donor. SAM is a costly metabolite, however, due to the fact that the aminotransferase-catalyzed reactions are most efficient when the pKa of the substrate and the enzyme are separated, SAM may be the only substrate available with an appropriate pKa [PMID:12379100].

Defined by 4 residues: TYR:A-17TYR:A-144ASP:A-245LYS:A-274
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