ID   BIOB_HYDCU              Reviewed;         338 AA.
AC   Q31E55;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   27-MAR-2024, entry version 114.
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};
GN   OrderedLocusNames=Tcr_1978;
OS   Hydrogenovibrio crunogenus (strain DSM 25203 / XCL-2) (Thiomicrospira
OS   crunogena).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Thiotrichales;
OC   Piscirickettsiaceae; Hydrogenovibrio.
OX   NCBI_TaxID=317025;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 25203 / XCL-2;
RX   PubMed=17105352; DOI=10.1371/journal.pbio.0040383;
RA   Scott K.M., Sievert S.M., Abril F.N., Ball L.A., Barrett C.J., Blake R.A.,
RA   Boller A.J., Chain P.S.G., Clark J.A., Davis C.R., Detter C., Do K.F.,
RA   Dobrinski K.P., Faza B.I., Fitzpatrick K.A., Freyermuth S.K., Harmer T.L.,
RA   Hauser L.J., Huegler M., Kerfeld C.A., Klotz M.G., Kong W.W., Land M.,
RA   Lapidus A., Larimer F.W., Longo D.L., Lucas S., Malfatti S.A., Massey S.E.,
RA   Martin D.D., McCuddin Z., Meyer F., Moore J.L., Ocampo L.H. Jr., Paul J.H.,
RA   Paulsen I.T., Reep D.K., Ren Q., Ross R.L., Sato P.Y., Thomas P.,
RA   Tinkham L.E., Zeruth G.T.;
RT   "The genome of deep-sea vent chemolithoautotroph Thiomicrospira crunogena
RT   XCL-2.";
RL   PLoS Biol. 4:1-17(2006).
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}.
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DR   EMBL; CP000109; ABB42568.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q31E55; -.
DR   SMR; Q31E55; -.
DR   STRING; 317025.Tcr_1978; -.
DR   KEGG; tcx:Tcr_1978; -.
DR   eggNOG; COG0502; Bacteria.
DR   HOGENOM; CLU_033172_1_2_6; -.
DR   OrthoDB; 9786826at2; -.
DR   UniPathway; UPA00078; UER00162.
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; SFLDF00272; biotin_synthase; 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   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..338
FT                   /note="Biotin synthase"
FT                   /id="PRO_0000381689"
FT   DOMAIN          41..269
FT                   /note="Radical SAM core"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT   BINDING         56
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         60
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         63
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         100
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
FT   BINDING         131
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
FT   BINDING         191
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
FT   BINDING         264
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01694"
SQ   SEQUENCE   338 AA;  37862 MW;  E7968F2E03B7E966 CRC64;
     MALGDVRNDW TLEEIKDIMN QPFNDLMFQA QTVHRQHFNP NEIQTSTLVN IKSGGCAEDC
     AYCSQSARNQ TEVEKEQMME VQEVIEQAMA AKEKGATRLC MGAAWRNPTK KDFPRVLEMV
     RVVKDLGLET CLTLGMLNDD QVKQLKEAGL DYYNHNLDTS EAFYPKIITT RSYQDRLDTI
     DKVQEAGINV CSGGIIGMGE QHKDRAELIR TFGTMRHHPN SVPINLLVPV EGTPLAHMKD
     KTDSFEFIRV IATARIVMPQ TYVRLSAGRM ELTDEAQALC FLAGANSIFY GDKLLTTDNP
     EAGHDEQLFA KLGIQMQQNA KVEAAAKKLA EQTTELTA
//