ID   VIRB3_RHIRD             Reviewed;         108 AA.
AC   P0A3V8; P05352;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 53.
DE   RecName: Full=Protein virB3;
GN   Name=virB3;
OS   Rhizobium radiobacter (Agrobacterium tumefaciens) (Agrobacterium
OS   radiobacter).
OG   Plasmid pTiA6.
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Rhizobium/Agrobacterium group; Agrobacterium;
OC   Agrobacterium tumefaciens complex.
OX   NCBI_TaxID=358;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=3281947; DOI=10.1016/s0021-9258(18)60637-4;
RA   Ward J.E., Akiyoshi D.E., Regier D., Datta A., Gordon M.P., Nester E.W.;
RT   "Characterization of the virB operon from an Agrobacterium tumefaciens Ti
RT   plasmid.";
RL   J. Biol. Chem. 263:5804-5814(1988).
CC   -!- FUNCTION: VirB proteins are suggested to act at the bacterial surface
CC       and there play an important role in directing T-DNA transfer to plant
CC       cells.
CC   -!- SUBCELLULAR LOCATION: Membrane {ECO:0000305}; Single-pass membrane
CC       protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the virB3 family. {ECO:0000305}.
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DR   EMBL; J03216; AAA88647.1; -; Genomic_DNA.
DR   PIR; S00779; B3AG55.
DR   RefSeq; NP_059801.1; NC_002377.1.
DR   RefSeq; WP_010892489.1; NZ_QSNU01000012.1.
DR   AlphaFoldDB; P0A3V8; -.
DR   TCDB; 3.A.7.1.1; the type iv (conjugal dna-protein transfer or virb) secretory pathway (ivsp) family.
DR   OrthoDB; 1730670at2; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   InterPro; IPR007792; T4SS_VirB3/TrbD/AvhB.
DR   Pfam; PF05101; VirB3; 1.
PE   3: Inferred from homology;
KW   Crown gall tumor; Membrane; Plasmid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..108
FT                   /note="Protein virB3"
FT                   /id="PRO_0000065839"
FT   TRANSMEM        22..42
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   108 AA;  11760 MW;  3D0CCCB19ECA105D CRC64;
     MNDRLEEATL YLAATRPALF LGVPLTLAGL FMMFAGFVIV IVQNPLYEVV LAPLWFGARL
     IVERDYNAAS VVLLFLRTAG RSIDSAVWGG ATVSPNPIRV PPRGRGMV