ID   VIRB3_AGRT9             Reviewed;         108 AA.
AC   P0A3V9; P05352;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 39.
DE   RecName: Full=Protein virB3;
GN   Name=virB3;
OS   Agrobacterium tumefaciens (strain 15955).
OG   Plasmid pTi15955.
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Rhizobium/Agrobacterium group; Agrobacterium;
OC   Agrobacterium tumefaciens complex.
OX   NCBI_TaxID=190386;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2837739; DOI=10.1093/nar/16.10.4621;
RA   Thompson D.V., Melchers L.S., Idler K.B., Shilperoort R.A.,
RA   Hooykaas P.J.J.;
RT   "Analysis of the complete nucleotide sequence of the Agrobacterium
RT   tumefaciens virB operon.";
RL   Nucleic Acids Res. 16:4621-4636(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; X06826; CAA29974.1; -; Genomic_DNA.
DR   PIR; S00779; B3AG55.
DR   RefSeq; NP_059801.1; NC_002377.1.
DR   AlphaFoldDB; P0A3V9; -.
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_0000065838"
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