Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyClass II aaRS and biotin synthetases8039899 3000058 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyTranscriptional regulator domain8039898 3000121 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyTranscriptional regulator domain8039898 3000121 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyClass II aaRS and biotin synthetases8039899 3000058 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ABPL_Ce1wq7A1 A: beta barrelsX: SH3H: SH3T: SH3F: BPL_CECOD (1.6)
ABPL_LplA_LipBe1wq7A2 A: a+b three layersX: Class II aaRS and biotin synthetases (From Topology)H: Class II aaRS and biotin synthetases (From Topology)T: Class II aaRS and biotin synthetasesF: BPL_LplA_LipBECOD (1.6)
BBPL_Ce1wq7B1 A: beta barrelsX: SH3H: SH3T: SH3F: BPL_CECOD (1.6)
BBPL_LplA_LipBe1wq7B2 A: a+b three layersX: Class II aaRS and biotin synthetases (From Topology)H: Class II aaRS and biotin synthetases (From Topology)T: Class II aaRS and biotin synthetasesF: BPL_LplA_LipBECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.30.930.10 Alpha Beta 2-Layer Sandwich BirA Bifunctional Protein domain 2CATH (4.3.0)
A2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
B3.30.930.10 Alpha Beta 2-Layer Sandwich BirA Bifunctional Protein domain 2CATH (4.3.0)
B2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF03099Biotin/lipoate A/B protein ligase family (BPL_LplA_LipB)Biotin/lipoate A/B protein ligase familyThis family includes biotin protein ligase, lipoate-protein ligase A and B. Biotin is covalently attached at the active site of certain enzymes that transfer carbon dioxide from bicarbonate to organic acids to form cellular metabolites. Biotin prot ...This family includes biotin protein ligase, lipoate-protein ligase A and B. Biotin is covalently attached at the active site of certain enzymes that transfer carbon dioxide from bicarbonate to organic acids to form cellular metabolites. Biotin protein ligase (BPL) is the enzyme responsible for attaching biotin to a specific lysine at the active site of biotin enzymes. Each organism probably has only one BPL. Biotin attachment is a two step reaction that results in the formation of an amide linkage between the carboxyl group of biotin and the epsilon-amino group of the modified lysine [2]. Lipoate-protein ligase A (LPLA) catalyses the formation of an amide linkage between lipoic acid and a specific lysine residue in lipoate dependent enzymes [3]. The unusual biosynthesis pathway of lipoic acid is mechanistically intertwined with attachment of the cofactor [5].
Domain
A, B
PF02237Biotin protein ligase C terminal domain (BPL_C)Biotin protein ligase C terminal domainThe function of this structural domain is unknown. It is found to the C terminus of the biotin protein ligase catalytic domain Pfam:PF01317.Domain