ID BIOB_CROS5 Reviewed; 382 AA.
AC B1WTI3;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 28-JUL-2009, sequence version 2.
DT 24-JAN-2024, entry version 80.
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=cce_4350;
OS Crocosphaera subtropica (strain ATCC 51142 / BH68) (Cyanothece sp. (strain
OS ATCC 51142)).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC Chroococcales; Aphanothecaceae; Crocosphaera; Crocosphaera subtropica.
OX NCBI_TaxID=43989;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 51142 / BH68;
RX PubMed=18812508; DOI=10.1073/pnas.0805418105;
RA Welsh E.A., Liberton M., Stoeckel J., Loh T., Elvitigala T., Wang C.,
RA Wollam A., Fulton R.S., Clifton S.W., Jacobs J.M., Aurora R., Ghosh B.K.,
RA Sherman L.A., Smith R.D., Wilson R.K., Pakrasi H.B.;
RT "The genome of Cyanothece 51142, a unicellular diazotrophic cyanobacterium
RT important in the marine nitrogen cycle.";
RL Proc. Natl. Acad. Sci. U.S.A. 105:15094-15099(2008).
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 = 2 5'-deoxyadenosine +
CC [sulfur carrier]-H + biotin + 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 -!- SEQUENCE CAUTION:
CC Sequence=ACB53698.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; CP000806; ACB53698.1; ALT_INIT; Genomic_DNA.
DR AlphaFoldDB; B1WTI3; -.
DR SMR; B1WTI3; -.
DR STRING; 43989.cce_4350; -.
DR KEGG; cyt:cce_4350; -.
DR eggNOG; COG0502; Bacteria.
DR HOGENOM; CLU_033172_2_1_3; -.
DR UniPathway; UPA00078; UER00162.
DR Proteomes; UP000001203; Chromosome circular.
DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
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 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.
DR InterPro; IPR024177; Biotin_synthase.
DR InterPro; IPR006638; Elp3/MiaA/NifB-like_rSAM.
DR InterPro; IPR007197; rSAM.
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; SFLDG01278; biotin_synthase_like; 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..382
FT /note="Biotin synthase"
FT /id="PRO_0000381337"
FT DOMAIN 83..318
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT BINDING 101
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 105
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 108
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 146
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
FT BINDING 183
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
FT BINDING 243
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
FT BINDING 313
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
SQ SEQUENCE 382 AA; 41661 MW; 1E1DCA94739F0817 CRC64;
MIQFIRPKTA SGKTIVVQLS ASPPQTPPPT DTNALKNWLE ILSQRIINGD RLTKTEALTL
TQIDGQDNIL LLCEAADRIR QACCGNVVDL CSIINVKSGN CSENCQFCSQ SVHHQGENSP
IYGLKSSEEI LAQAKAAEVA GAKRFCLVSQ GRGPKYNSPQ SGEFEKILET VRQITTETNI
KPCCALGEVT LEQAEALKEA GVTRYNHNLE ASENYYQSIV STHSWGDRVE TVKNLKKAGI
QACTGGIMGM GETWEDRVDL AISLRELEVD SVPINLLNPR EGTPLGHLPK LDVFDALKAI
AIFRFLLPEQ ILRYAGGREA VMGELQSLGL KSGINAMLIG HYLTTLGQPP ENDHAMLESL
GLQGGEAPIP GEYKKKTQKK AH
//
