ID   TRBI_SINFN              Reviewed;         431 AA.
AC   P55406;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   04-NOV-2026, entry version 121.
DE   RecName: Full=Probable conjugal transfer protein TrbI;
GN   Name=trbI; OrderedLocusNames=NGR_a04100; ORFNames=y4dG;
OS   Sinorhizobium fredii (strain NBRC 101917 / NGR234).
OG   Plasmid sym pNGR234a.
OC   Bacteria; Pseudomonadati; Pseudomonadota; Alphaproteobacteria;
OC   Hyphomicrobiales; Rhizobiaceae; Sinorhizobium/Ensifer group; Sinorhizobium.
OX   NCBI_TaxID=394;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NBRC 101917 / NGR234;
RX   PubMed=9163424; DOI=10.1038/387394a0;
RA   Freiberg C.A., Fellay R., Bairoch A., Broughton W.J., Rosenthal A.,
RA   Perret X.;
RT   "Molecular basis of symbiosis between Rhizobium and legumes.";
RL   Nature 387:394-401(1997).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NBRC 101917 / NGR234;
RX   PubMed=19376903; DOI=10.1128/aem.00515-09;
RA   Schmeisser C., Liesegang H., Krysciak D., Bakkou N., Le Quere A.,
RA   Wollherr A., Heinemeyer I., Morgenstern B., Pommerening-Roeser A.,
RA   Flores M., Palacios R., Brenner S., Gottschalk G., Schmitz R.A.,
RA   Broughton W.J., Perret X., Strittmatter A.W., Streit W.R.;
RT   "Rhizobium sp. strain NGR234 possesses a remarkable number of secretion
RT   systems.";
RL   Appl. Environ. Microbiol. 75:4035-4045(2009).
CC   -!- SUBCELLULAR LOCATION: Membrane {ECO:0000305}; Single-pass membrane
CC       protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the TrbI/VirB10 family. {ECO:0000305}.
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DR   EMBL; U00090; AAB92439.1; -; Genomic_DNA.
DR   RefSeq; WP_010875420.1; NC_000914.2.
DR   AlphaFoldDB; P55406; -.
DR   SMR; P55406; -.
DR   KEGG; rhi:NGR_a04100; -.
DR   PATRIC; fig|394.7.peg.431; -.
DR   eggNOG; COG2948; Bacteria.
DR   HOGENOM; CLU_042657_2_0_5; -.
DR   OMA; ARYQANG; -.
DR   OrthoDB; 9807354at2; -.
DR   Proteomes; UP000001054; Plasmid pNGR234a.
DR   GO; GO:0016020; C:membrane; IEA:UniProtKB-SubCell.
DR   CDD; cd16429; VirB10; 1.
DR   Gene3D; 2.40.128.260; Type IV secretion system, VirB10/TraB/TrbI; 1.
DR   InterPro; IPR005498; T4SS_VirB10/TraB/TrbI.
DR   InterPro; IPR042217; T4SS_VirB10/TrbI.
DR   NCBIfam; NF010405; trbI; 1.
DR   Pfam; PF03743; TrbI; 1.
PE   3: Inferred from homology;
KW   Conjugation; Membrane; Plasmid; Reference proteome; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..431
FT                   /note="Probable conjugal transfer protein TrbI"
FT                   /id="PRO_0000065618"
FT   TRANSMEM        27..47
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   REGION          95..122
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          161..189
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        99..122
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        174..189
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   431 AA;  47769 MW;  062E4462D67FDCA6 CRC64;
     MVQSLRLGAA NEAEDQNGMR RLNRLPIIVA IVIVALFVGF VVIGLAWRGL PFNRNNDIHS
     ASNTPATNFG DQLKRGVTDG IIGEPVKREA FQPTPTMKQK VDKEPTVVDR PTEPEERRPR
     LETEEEWKAR LMREQDEQII REAQRQRMAR LQARATALDS PLKVDISEGE KAPKNSTDTG
     QNPTATENNA SDLYPAAMKS GIMGENLDPN AQASKEDFFN QDIKDDGYLP NRVVPQMSVY
     ELKRGSVIPA TLITGLNSDL PGRITAQVSQ NVYDSATGYR LLIPQGAKLF GRYDSKVSFG
     QERVLVVWTD LIFPNGSTLQ IGGMAGTDAE GYGGFKDRVD RHLWRTWSSA ALIALIGTGI
     DMSMPESSTL ATQDTASDAV RRNFAESFGR VAEQTISKNL NVQPTIRIRP GYKFNVLVDQ
     DIIFPSAYRD N
//