Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ALip_prot_lig_Ce6jomA2 A: a+b two layersX: FAD-linked reductases, C-terminal domain-likeH: SufE/NifU (From Topology)T: SufE/NifUF: Lip_prot_lig_CECOD (1.6)
ABPL_LplA_LipB_1e6jomA1 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_LipB_1ECOD (1.6)
BLip_prot_lig_Ce6jomB1 A: a+b two layersX: FAD-linked reductases, C-terminal domain-likeH: SufE/NifU (From Topology)T: SufE/NifUF: Lip_prot_lig_CECOD (1.6)
BBPL_LplA_LipB_1e6jomB2 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_LipB_1ECOD (1.6)

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
PF10437Bacterial lipoate protein ligase C-terminus (Lip_prot_lig_C)Bacterial lipoate protein ligase C-terminusThis is the C-terminal domain of a bacterial lipoate protein ligase. There is no conservation between this C-terminus and that of vertebrate lipoate protein ligase C-termini, but both are associated with the domain BPL_LipA_LipB Pfam:PF03099, furthe ...This is the C-terminal domain of a bacterial lipoate protein ligase. There is no conservation between this C-terminus and that of vertebrate lipoate protein ligase C-termini, but both are associated with the domain BPL_LipA_LipB Pfam:PF03099, further upstream. This domain is required for adenylation of lipoic acid by lipoate protein ligases. The domain is not required for transfer of lipoic acid from the adenylate to the lipoyl domain. Upon adenylation, this domain rotates 180 degrees away from the active site cleft. Therefore, the domain does not interact with the lipoyl domain during transfer.
Domain