ID   PQQB_RHIME              Reviewed;         303 AA.
AC   Q9EXV1;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2001, sequence version 1.
DT   25-MAY-2022, entry version 95.
DE   RecName: Full=Coenzyme PQQ synthesis protein B {ECO:0000255|HAMAP-Rule:MF_00653};
DE   AltName: Full=Pyrroloquinoline quinone biosynthesis protein B {ECO:0000255|HAMAP-Rule:MF_00653};
GN   Name=pqqB {ECO:0000255|HAMAP-Rule:MF_00653}; OrderedLocusNames=RB0198;
GN   ORFNames=SMb20205;
OS   Rhizobium meliloti (strain 1021) (Ensifer meliloti) (Sinorhizobium
OS   meliloti).
OG   Plasmid pSymB (megaplasmid 2).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Sinorhizobium/Ensifer group; Sinorhizobium.
OX   NCBI_TaxID=266834;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=1021;
RA   Finan T.M., Aneja P., Chain P., Napper K., Golding B.;
RT   "Mineral phosphate solubilization in Sinorhizobium meliloti.";
RL   Submitted (OCT-2000) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=1021;
RX   PubMed=11481431; DOI=10.1073/pnas.161294698;
RA   Finan T.M., Weidner S., Wong K., Buhrmester J., Chain P., Vorhoelter F.J.,
RA   Hernandez-Lucas I., Becker A., Cowie A., Gouzy J., Golding B., Puehler A.;
RT   "The complete sequence of the 1,683-kb pSymB megaplasmid from the N2-fixing
RT   endosymbiont Sinorhizobium meliloti.";
RL   Proc. Natl. Acad. Sci. U.S.A. 98:9889-9894(2001).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=1021;
RX   PubMed=11474104; DOI=10.1126/science.1060966;
RA   Galibert F., Finan T.M., Long S.R., Puehler A., Abola P., Ampe F.,
RA   Barloy-Hubler F., Barnett M.J., Becker A., Boistard P., Bothe G.,
RA   Boutry M., Bowser L., Buhrmester J., Cadieu E., Capela D., Chain P.,
RA   Cowie A., Davis R.W., Dreano S., Federspiel N.A., Fisher R.F., Gloux S.,
RA   Godrie T., Goffeau A., Golding B., Gouzy J., Gurjal M., Hernandez-Lucas I.,
RA   Hong A., Huizar L., Hyman R.W., Jones T., Kahn D., Kahn M.L., Kalman S.,
RA   Keating D.H., Kiss E., Komp C., Lelaure V., Masuy D., Palm C., Peck M.C.,
RA   Pohl T.M., Portetelle D., Purnelle B., Ramsperger U., Surzycki R.,
RA   Thebault P., Vandenbol M., Vorhoelter F.J., Weidner S., Wells D.H.,
RA   Wong K., Yeh K.-C., Batut J.;
RT   "The composite genome of the legume symbiont Sinorhizobium meliloti.";
RL   Science 293:668-672(2001).
CC   -!- FUNCTION: May be involved in the transport of PQQ or its precursor to
CC       the periplasm. {ECO:0000255|HAMAP-Rule:MF_00653}.
CC   -!- PATHWAY: Cofactor biosynthesis; pyrroloquinoline quinone biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00653}.
CC   -!- SIMILARITY: Belongs to the PqqB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00653}.
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DR   EMBL; AY013584; AAG42539.1; -; Genomic_DNA.
DR   EMBL; AL591985; CAC48598.1; -; Genomic_DNA.
DR   PIR; F95866; F95866.
DR   RefSeq; NP_436738.1; NC_003078.1.
DR   RefSeq; WP_010975103.1; NC_003078.1.
DR   AlphaFoldDB; Q9EXV1; -.
DR   SMR; Q9EXV1; -.
DR   STRING; 266834.SM_b20205; -.
DR   EnsemblBacteria; CAC48598; CAC48598; SM_b20205.
DR   GeneID; 61600213; -.
DR   KEGG; sme:SM_b20205; -.
DR   PATRIC; fig|266834.11.peg.5114; -.
DR   eggNOG; COG1235; Bacteria.
DR   HOGENOM; CLU_061120_0_0_5; -.
DR   OMA; FYIPGCA; -.
DR   UniPathway; UPA00539; -.
DR   Proteomes; UP000001976; Plasmid pSymB.
DR   GO; GO:0018189; P:pyrroloquinoline quinone biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.60.15.10; -; 1.
DR   HAMAP; MF_00653; PQQ_syn_PqqB; 1.
DR   InterPro; IPR001279; Metallo-B-lactamas.
DR   InterPro; IPR011842; PQQ_synth_PqqB.
DR   InterPro; IPR036866; RibonucZ/Hydroxyglut_hydro.
DR   Pfam; PF12706; Lactamase_B_2; 1.
DR   SUPFAM; SSF56281; SSF56281; 1.
DR   TIGRFAMs; TIGR02108; PQQ_syn_pqqB; 1.
PE   3: Inferred from homology;
KW   Plasmid; PQQ biosynthesis; Reference proteome; Transport.
FT   CHAIN           1..303
FT                   /note="Coenzyme PQQ synthesis protein B"
FT                   /id="PRO_0000220008"
SQ   SEQUENCE   303 AA;  33106 MW;  479A256E7C3CA9C0 CRC64;
     MNKTSDLRII VLGAAAGGGL PQWNCGCRNC AMARDPASGL RPQTQSSLAV SLDGESWTVF
     NASPDIRQQV QDNCPLQPRR LRHSPIESVV LTNGDIDHLA GLLVLREKQA FTLFSTGAVG
     RIVSDNPVFQ VLDPELVSRK TIEIDEAFSP LSGLDARLFA VPGKVPLFLE DGEPDLGIEG
     EHTVGLELEA TGRRVYYVPG CAMMTDSLAA RLRDADAVFF DGTLFSDDEM ILTGTGRKTG
     RRMGHMPIDG EGGSLDALDL LNIRRKIYVH INNTNPIWRA GSERERVEAR GFEIGYDGME
     VRL