ID   COBT_BRASB              Reviewed;         351 AA.
AC   A5EGF4;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   12-JUN-2007, sequence version 1.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_00230};
DE            Short=NN:DBI PRT {ECO:0000255|HAMAP-Rule:MF_00230};
DE            EC=2.4.2.21 {ECO:0000255|HAMAP-Rule:MF_00230};
DE   AltName: Full=N(1)-alpha-phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_00230};
GN   Name=cobT {ECO:0000255|HAMAP-Rule:MF_00230}; OrderedLocusNames=BBta_3133;
OS   Bradyrhizobium sp. (strain BTAi1 / ATCC BAA-1182).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Bradyrhizobium; unclassified Bradyrhizobium.
OX   NCBI_TaxID=288000;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BTAi1 / ATCC BAA-1182;
RX   PubMed=17540897; DOI=10.1126/science.1139548;
RA   Giraud E., Moulin L., Vallenet D., Barbe V., Cytryn E., Avarre J.-C.,
RA   Jaubert M., Simon D., Cartieaux F., Prin Y., Bena G., Hannibal L.,
RA   Fardoux J., Kojadinovic M., Vuillet L., Lajus A., Cruveiller S., Rouy Z.,
RA   Mangenot S., Segurens B., Dossat C., Franck W.L., Chang W.-S., Saunders E.,
RA   Bruce D., Richardson P., Normand P., Dreyfus B., Pignol D., Stacey G.,
RA   Emerich D., Vermeglio A., Medigue C., Sadowsky M.;
RT   "Legumes symbioses: absence of nod genes in photosynthetic bradyrhizobia.";
RL   Science 316:1307-1312(2007).
CC   -!- FUNCTION: Catalyzes the synthesis of alpha-ribazole-5'-phosphate from
CC       nicotinate mononucleotide (NAMN) and 5,6-dimethylbenzimidazole (DMB).
CC       {ECO:0000255|HAMAP-Rule:MF_00230}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5,6-dimethylbenzimidazole + nicotinate beta-D-ribonucleotide =
CC         alpha-ribazole 5'-phosphate + H(+) + nicotinate;
CC         Xref=Rhea:RHEA:11196, ChEBI:CHEBI:15378, ChEBI:CHEBI:15890,
CC         ChEBI:CHEBI:32544, ChEBI:CHEBI:57502, ChEBI:CHEBI:57918; EC=2.4.2.21;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00230};
CC   -!- PATHWAY: Nucleoside biosynthesis; alpha-ribazole biosynthesis; alpha-
CC       ribazole from 5,6-dimethylbenzimidazole: step 1/2. {ECO:0000255|HAMAP-
CC       Rule:MF_00230}.
CC   -!- SIMILARITY: Belongs to the CobT family. {ECO:0000255|HAMAP-
CC       Rule:MF_00230}.
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DR   EMBL; CP000494; ABQ35248.1; -; Genomic_DNA.
DR   RefSeq; WP_012043266.1; NC_009485.1.
DR   AlphaFoldDB; A5EGF4; -.
DR   SMR; A5EGF4; -.
DR   STRING; 288000.BBta_3133; -.
DR   EnsemblBacteria; ABQ35248; ABQ35248; BBta_3133.
DR   KEGG; bbt:BBta_3133; -.
DR   eggNOG; COG2038; Bacteria.
DR   HOGENOM; CLU_002982_0_0_5; -.
DR   OMA; AIWYAGW; -.
DR   OrthoDB; 1765140at2; -.
DR   UniPathway; UPA00061; UER00516.
DR   Proteomes; UP000000246; Chromosome.
DR   GO; GO:0008939; F:nicotinate-nucleotide-dimethylbenzimidazole phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009236; P:cobalamin biosynthetic process; IEA:UniProtKB-KW.
DR   CDD; cd02439; DMB-PRT_CobT; 1.
DR   Gene3D; 1.10.1610.10; -; 1.
DR   Gene3D; 3.40.50.10210; -; 1.
DR   HAMAP; MF_00230; CobT; 1.
DR   InterPro; IPR003200; Nict_dMeBzImd_PRibTrfase.
DR   InterPro; IPR017846; Nict_dMeBzImd_PRibTrfase_bact.
DR   InterPro; IPR023195; Nict_dMeBzImd_PRibTrfase_N.
DR   InterPro; IPR036087; Nict_dMeBzImd_PRibTrfase_sf.
DR   Pfam; PF02277; DBI_PRT; 1.
DR   SUPFAM; SSF52733; SSF52733; 1.
DR   TIGRFAMs; TIGR03160; cobT_DBIPRT; 1.
PE   3: Inferred from homology;
KW   Cobalamin biosynthesis; Glycosyltransferase; Transferase.
FT   CHAIN           1..351
FT                   /note="Nicotinate-nucleotide--dimethylbenzimidazole
FT                   phosphoribosyltransferase"
FT                   /id="PRO_1000021578"
FT   ACT_SITE        317
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00230"
SQ   SEQUENCE   351 AA;  35842 MW;  EF8908AB6D90F433 CRC64;
     MLPDWISLDC AAPSESHRQA AMARQAQLTK PLGALGRLEE VAVELAALQA TDHPGADRAP
     VVLFAGDHGI AAQGVSAYPP EVTVQMLRNF AGGGAAIAVL ARHLNCPLEV VDVGTLASDA
     VPGVVADKTR RGTRDFSVAQ ALTPEEVAFA CDAGRRALAR QADHQPQLVI FGEMGIGNTT
     SAAAIAAALL SCAPVDIVGS GTGLDADGRA KKAAVIVAAL ARHGLTSDAA VADILAAVGG
     FEIIAMAGAM IAAAQRRWPV LVDGFIVSVA ALAAVRLNPS CRTWLLFSHR SAERGHALVL
     DALGAHPLID LDLRLGEASG AATALPIIRL ACALHNGMAT FAEAAVSGRD A