ID   SAR1B_BRACM             Reviewed;         195 AA.
AC   O04267;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1997, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=GTP-binding protein SAR1B;
GN   Name=SAR1B;
OS   Brassica campestris (Field mustard).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Brassicales; Brassicaceae; Brassiceae; Brassica.
OX   NCBI_TaxID=3711;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=9154984; DOI=10.1023/a:1005731209124;
RA   Kim W.Y., Cheong N.E., Je D.Y., Kim M.G., Lim C.O., Bahk J.D., Cho M.J.,
RA   Lee S.Y.;
RT   "The presence of a Sar1 gene family in Brassica campestris that suppresses
RT   a yeast vesicular transport mutation Sec12-1.";
RL   Plant Mol. Biol. 33:1025-1035(1997).
CC   -!- FUNCTION: Involved in transport from the endoplasmic reticulum to the
CC       Golgi apparatus. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Endoplasmic reticulum {ECO:0000250}. Golgi
CC       apparatus {ECO:0000250}.
CC   -!- TISSUE SPECIFICITY: Expressed in most tissues.
CC   -!- SIMILARITY: Belongs to the small GTPase superfamily. SAR1 family.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; U55036; AAC49717.1; -; mRNA.
DR   AlphaFoldDB; O04267; -.
DR   SMR; O04267; -.
DR   STRING; 3711.Bra027937.1-P; -.
DR   GO; GO:0005783; C:endoplasmic reticulum; IEA:UniProtKB-SubCell.
DR   GO; GO:0005794; C:Golgi apparatus; IEA:UniProtKB-SubCell.
DR   GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR   GO; GO:0003924; F:GTPase activity; IEA:InterPro.
DR   GO; GO:0006886; P:intracellular protein transport; IEA:InterPro.
DR   GO; GO:0016192; P:vesicle-mediated transport; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.300; -; 1.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR005225; Small_GTP-bd_dom.
DR   InterPro; IPR006689; Small_GTPase_ARF/SAR.
DR   InterPro; IPR006687; Small_GTPase_SAR1.
DR   PANTHER; PTHR45684; PTHR45684; 1.
DR   Pfam; PF00025; Arf; 1.
DR   PRINTS; PR00328; SAR1GTPBP.
DR   SMART; SM00178; SAR; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR00231; small_GTP; 1.
DR   PROSITE; PS51422; SAR1; 1.
PE   2: Evidence at transcript level;
KW   Endoplasmic reticulum; ER-Golgi transport; Golgi apparatus; GTP-binding;
KW   Nucleotide-binding; Protein transport; Transport.
FT   CHAIN           1..195
FT                   /note="GTP-binding protein SAR1B"
FT                   /id="PRO_0000206268"
FT   BINDING         27..34
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         70..73
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         129..132
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   195 AA;  22077 MW;  A2FC46B348F29D7B CRC64;
     MFLFDWFYGI LASLGLWQKE AKILFLGLDN AGKTTLLHML KDERLVQHQP TQHPTSEELS
     IGKIKFKAFD LGGHQIARRV WKDYYAKVDA VVYLVDAYDK ERFSESKKEL DALLSDDALA
     TVPFLILGNK IDNPYAASED ELRYHLGLTN FTTGKGKVTT AGGDSGVRPL EVFMCSIVRK
     MGYGEGFKWL SQYIN