ID BIOB_MANSM Reviewed; 336 AA. AC Q65SD0; DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot. DT 25-OCT-2004, sequence version 1. DT 04-NOV-2026, entry version 123. DE RecName: Full=Biotin synthase {ECO:0000255|HAMAP-Rule:MF_01694}; DE EC=2.8.1.6 {ECO:0000255|HAMAP-Rule:MF_01694}; GN Name=bioB {ECO:0000255|HAMAP-Rule:MF_01694}; OrderedLocusNames=MS1523; OS Mannheimia succiniciproducens (strain KCTC 0769BP / MBEL55E). OC Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria; OC Pasteurellales; Pasteurellaceae; Basfia. OX NCBI_TaxID=221988; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=KCTC 0769BP / MBEL55E; RX PubMed=15378067; DOI=10.1038/nbt1010; RA Hong S.H., Kim J.S., Lee S.Y., In Y.H., Choi S.S., Rih J.-K., Kim C.H., RA Jeong H., Hur C.G., Kim J.J.; RT "The genome sequence of the capnophilic rumen bacterium Mannheimia RT succiniciproducens."; RL Nat. Biotechnol. 22:1275-1281(2004). CC -!- FUNCTION: Catalyzes the conversion of dethiobiotin (DTB) to biotin by CC the insertion of a sulfur atom into dethiobiotin via a radical-based CC mechanism. {ECO:0000255|HAMAP-Rule:MF_01694}. CC -!- CATALYTIC ACTIVITY: CC Reaction=(4R,5S)-dethiobiotin + (sulfur carrier)-SH + 2 reduced [2Fe- CC 2S]-[ferredoxin] + 2 S-adenosyl-L-methionine = (sulfur carrier)-H + CC biotin + 2 5'-deoxyadenosine + 2 L-methionine + 2 oxidized [2Fe-2S]- CC [ferredoxin]; Xref=Rhea:RHEA:22060, Rhea:RHEA-COMP:10000, Rhea:RHEA- CC COMP:10001, Rhea:RHEA-COMP:14737, Rhea:RHEA-COMP:14739, CC ChEBI:CHEBI:17319, ChEBI:CHEBI:29917, ChEBI:CHEBI:33737, CC ChEBI:CHEBI:33738, ChEBI:CHEBI:57586, ChEBI:CHEBI:57844, CC ChEBI:CHEBI:59789, ChEBI:CHEBI:64428, ChEBI:CHEBI:149473; EC=2.8.1.6; CC Evidence={ECO:0000255|HAMAP-Rule:MF_01694}; CC -!- COFACTOR: CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; CC Evidence={ECO:0000255|HAMAP-Rule:MF_01694}; CC Note=Binds 1 [4Fe-4S] cluster. The cluster is coordinated with 3 CC cysteines and an exchangeable S-adenosyl-L-methionine. CC {ECO:0000255|HAMAP-Rule:MF_01694}; CC -!- COFACTOR: CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135; CC Evidence={ECO:0000255|HAMAP-Rule:MF_01694}; CC Note=Binds 1 [2Fe-2S] cluster. The cluster is coordinated with 3 CC cysteines and 1 arginine. {ECO:0000255|HAMAP-Rule:MF_01694}; CC -!- PATHWAY: Cofactor biosynthesis; biotin biosynthesis; biotin from 7,8- CC diaminononanoate: step 2/2. {ECO:0000255|HAMAP-Rule:MF_01694}. CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01694}. CC -!- SIMILARITY: Belongs to the radical SAM superfamily. Biotin synthase CC family. {ECO:0000255|HAMAP-Rule:MF_01694}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AE016827; AAU38130.1; -; Genomic_DNA. DR RefSeq; WP_011200696.1; NC_006300.1. DR AlphaFoldDB; Q65SD0; -. DR SMR; Q65SD0; -. DR STRING; 221988.MS1523; -. DR KEGG; msu:MS1523; -. DR eggNOG; COG0502; Bacteria. DR HOGENOM; CLU_033172_1_2_6; -. DR OMA; AAHTYKE; -. DR OrthoDB; 9786826at2; -. DR UniPathway; UPA00078; UER00162. DR Proteomes; UP000000607; Chromosome. DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:TreeGrafter. DR GO; GO:0004076; F:biotin synthase activity; IEA:UniProtKB-UniRule. DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0009102; P:biotin biosynthetic process; IEA:UniProtKB-UniRule. DR CDD; cd01335; Radical_SAM; 1. DR FunFam; 3.20.20.70:FF:000011; Biotin synthase; 1. DR Gene3D; 3.20.20.70; Aldolase class I; 1. DR HAMAP; MF_01694; BioB; 1. DR InterPro; IPR013785; Aldolase_TIM. DR InterPro; IPR010722; BATS_dom. DR InterPro; IPR002684; Biotin_synth/BioAB-like. DR InterPro; IPR024177; Biotin_synthase. DR InterPro; IPR006638; Elp3/MiaA/NifB-like_rSAM. DR InterPro; IPR007197; rSAM. DR InterPro; IPR058240; rSAM_sf. DR NCBIfam; TIGR00433; bioB; 1. DR PANTHER; PTHR22976; BIOTIN SYNTHASE; 1. DR PANTHER; PTHR22976:SF2; BIOTIN SYNTHASE, MITOCHONDRIAL; 1. DR Pfam; PF06968; BATS; 1. DR Pfam; PF04055; Radical_SAM; 1. DR PIRSF; PIRSF001619; Biotin_synth; 1. DR SFLD; SFLDG01060; BATS_domain_containing; 1. DR SFLD; SFLDF00272; biotin_synthase; 1. DR SFLD; SFLDG01278; biotin_synthase_like; 1. DR SFLD; SFLDS00029; Radical_SAM; 1. DR SMART; SM00876; BATS; 1. DR SMART; SM00729; Elp3; 1. DR SUPFAM; SSF102114; Radical SAM enzymes; 1. DR PROSITE; PS51918; RADICAL_SAM; 1. PE 3: Inferred from homology; KW 2Fe-2S; 4Fe-4S; Biotin biosynthesis; Iron; Iron-sulfur; Metal-binding; KW Reference proteome; S-adenosyl-L-methionine; Transferase. FT CHAIN 1..336 FT /note="Biotin synthase" FT /id="PRO_0000381453" FT DOMAIN 50..277 FT /note="Radical SAM core" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266" FT BINDING 65 FT /ligand="[4Fe-4S] cluster" FT /ligand_id="ChEBI:CHEBI:49883" FT /ligand_note="4Fe-4S-S-AdoMet" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" FT BINDING 69 FT /ligand="[4Fe-4S] cluster" FT /ligand_id="ChEBI:CHEBI:49883" FT /ligand_note="4Fe-4S-S-AdoMet" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" FT BINDING 72 FT /ligand="[4Fe-4S] cluster" FT /ligand_id="ChEBI:CHEBI:49883" FT /ligand_note="4Fe-4S-S-AdoMet" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" FT BINDING 109 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" FT BINDING 140 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" FT BINDING 200 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" FT BINDING 272 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694" SQ SEQUENCE 336 AA; 37301 MW; F4000216FECEEABE CRC64; MKTTLQLYSN TPHPQVEYWS VCKVEALFET PFLELVHRAA LVHRENFNPQ AIQLSTLMSI KTGGCPEDCG YCPQSARYQT GVQKQELLNV EDIVEKAKIA KSRGASRFCM GAAWRGPKPK DIAKMTEIIK AVKALGLETC GTFGLLDDGM AEDLKEAGLD YYNHNLDTSP EHYNKVIGTR GFDDRLNTLG KVRKAGLKVC CGGIIGMNES RKERAGFIAS LANLDPQPES VPINQLVKVE GTPLSDAQEL DWTEFVRTVA VARITMPKSY VRLSAGRQGM SEEMQAMCFM AGANSIFYGD KLLVTGNAEE DCDRLLMEKL DLEPETTENR YLSQNN //