ID   EXOX_RHIME              Reviewed;          98 AA.
AC   Q02730;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1993, sequence version 1.
DT   25-MAY-2022, entry version 99.
DE   RecName: Full=Exopolysaccharide production repressor protein;
GN   Name=exoX; OrderedLocusNames=RB1070; ORFNames=SMb20947;
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=RCR2011 / SU47;
RX   PubMed=8439670; DOI=10.1094/mpmi-6-055;
RA   Mueller P., Keller M., Weng W.M., Quandt J., Arnold W., Puehler A.;
RT   "Genetic analysis of the Rhizobium meliloti exoYFQ operon: ExoY is
RT   homologous to sugar transferases and ExoQ represents a transmembrane
RT   protein.";
RL   Mol. Plant Microbe Interact. 6:55-65(1993).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=1021;
RX   PubMed=2050634; DOI=10.1128/jb.173.12.3776-3788.1991;
RA   Reed J.W., Capage M., Walker G.C.;
RT   "Rhizobium meliloti exoG and exoJ mutations affect the exoX-exoY system for
RT   modulation of exopolysaccharide production.";
RL   J. Bacteriol. 173:3776-3788(1991).
RN   [3]
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   [4]
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: Inhibition of exopolysaccharide synthesis (EPS) and
CC       nodulation ability (NOD).
CC   -!- PATHWAY: Glycan metabolism; exopolysaccharide biosynthesis.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Multi-pass membrane
CC       protein {ECO:0000305}.
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DR   EMBL; L05588; AAA26263.1; -; Genomic_DNA.
DR   EMBL; M61751; AAA26261.1; -; Genomic_DNA.
DR   EMBL; AL591985; CAC49470.1; -; Genomic_DNA.
DR   PIR; A39437; A39437.
DR   PIR; F95975; F95975.
DR   RefSeq; NP_437610.1; NC_003078.1.
DR   RefSeq; WP_010975908.1; NC_003078.1.
DR   AlphaFoldDB; Q02730; -.
DR   STRING; 266834.SM_b20947; -.
DR   EnsemblBacteria; CAC49470; CAC49470; SM_b20947.
DR   GeneID; 61601027; -.
DR   KEGG; sme:SM_b20947; -.
DR   PATRIC; fig|266834.11.peg.5999; -.
DR   eggNOG; ENOG502ZTHQ; Bacteria.
DR   HOGENOM; CLU_2353631_0_0_5; -.
DR   OMA; QVGYFVA; -.
DR   UniPathway; UPA00631; -.
DR   Proteomes; UP000001976; Plasmid pSymB.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0000271; P:polysaccharide biosynthetic process; IEA:UniProtKB-KW.
DR   InterPro; IPR024239; SyrA.
DR   Pfam; PF11089; SyrA; 1.
PE   4: Predicted;
KW   Cell membrane; Exopolysaccharide synthesis; Membrane; Nodulation; Plasmid;
KW   Reference proteome; Transmembrane; Transmembrane helix.
FT   CHAIN           1..98
FT                   /note="Exopolysaccharide production repressor protein"
FT                   /id="PRO_0000087139"
FT   TRANSMEM        6..26
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        35..55
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   REGION          73..98
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   98 AA;  10985 MW;  2BCA9CE8C457CAC5 CRC64;
     MFAPRVFLSM IGALAAFAVA TYYLNGSLAS TAIQTLICAV LIQVGYFIAV LFLVWKEARE
     RRRLSSQKQF MTAEAANDEK QPGKVSLRRL NRPHHLNS