SAR1_KLULA
ID SAR1_KLULA Reviewed; 190 AA.
AC Q6CWR7;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 16-AUG-2004, sequence version 1.
DT 03-AUG-2022, entry version 108.
DE RecName: Full=Small COPII coat GTPase SAR1;
DE EC=3.6.5.-;
GN Name=SAR1; OrderedLocusNames=KLLA0B02046g;
OS Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 /
OS NRRL Y-1140 / WM37) (Yeast) (Candida sphaerica).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Saccharomycetaceae; Kluyveromyces.
OX NCBI_TaxID=284590;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37;
RX PubMed=15229592; DOI=10.1038/nature02579;
RA Dujon B., Sherman D., Fischer G., Durrens P., Casaregola S., Lafontaine I.,
RA de Montigny J., Marck C., Neuveglise C., Talla E., Goffard N., Frangeul L.,
RA Aigle M., Anthouard V., Babour A., Barbe V., Barnay S., Blanchin S.,
RA Beckerich J.-M., Beyne E., Bleykasten C., Boisrame A., Boyer J.,
RA Cattolico L., Confanioleri F., de Daruvar A., Despons L., Fabre E.,
RA Fairhead C., Ferry-Dumazet H., Groppi A., Hantraye F., Hennequin C.,
RA Jauniaux N., Joyet P., Kachouri R., Kerrest A., Koszul R., Lemaire M.,
RA Lesur I., Ma L., Muller H., Nicaud J.-M., Nikolski M., Oztas S.,
RA Ozier-Kalogeropoulos O., Pellenz S., Potier S., Richard G.-F.,
RA Straub M.-L., Suleau A., Swennen D., Tekaia F., Wesolowski-Louvel M.,
RA Westhof E., Wirth B., Zeniou-Meyer M., Zivanovic Y., Bolotin-Fukuhara M.,
RA Thierry A., Bouchier C., Caudron B., Scarpelli C., Gaillardin C.,
RA Weissenbach J., Wincker P., Souciet J.-L.;
RT "Genome evolution in yeasts.";
RL Nature 430:35-44(2004).
CC -!- FUNCTION: Small GTPase component of the coat protein complex II (COPII)
CC which promotes the formation of transport vesicles from the endoplasmic
CC reticulum (ER). The coat has two main functions, the physical
CC deformation of the endoplasmic reticulum membrane into vesicles and the
CC selection of cargo molecules. SAR1 controls the coat assembly in a
CC stepwise manner. Activated SAR1-GTP binds to membranes first and
CC recruits the SEC23/24 complex. These SEC23/24-SAR1 prebudding
CC intermediates are then collected by the SEC13/31 complex as subunits
CC polymerize to form coated transport vesicles. Conversion to SAR1-GDP
CC triggers coat release and recycles COPII subunits (By similarity).
CC {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + H2O = GDP + H(+) + phosphate; Xref=Rhea:RHEA:19669,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:37565,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:58189;
CC -!- SUBUNIT: COPII is composed of at least 5 proteins: the SEC23/24
CC complex, the SEC13/31 complex and SAR1. {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Cytoplasmic vesicle, COPII-coated vesicle
CC membrane {ECO:0000250}; Peripheral membrane protein {ECO:0000250};
CC Cytoplasmic side {ECO:0000250}. Endoplasmic reticulum membrane
CC {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Cytoplasmic
CC side {ECO:0000250}. Golgi apparatus membrane {ECO:0000250}; Peripheral
CC membrane protein {ECO:0000250}; Cytoplasmic side {ECO:0000250}.
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; CR382122; CAH02015.1; -; Genomic_DNA.
DR RefSeq; XP_451622.1; XM_451622.1.
DR AlphaFoldDB; Q6CWR7; -.
DR SMR; Q6CWR7; -.
DR STRING; 28985.XP_451622.1; -.
DR EnsemblFungi; CAH02015; CAH02015; KLLA0_B02046g.
DR GeneID; 2897293; -.
DR KEGG; kla:KLLA0_B02046g; -.
DR eggNOG; KOG0077; Eukaryota.
DR HOGENOM; CLU_040729_6_0_1; -.
DR InParanoid; Q6CWR7; -.
DR OMA; DDRIAQH; -.
DR Proteomes; UP000000598; Chromosome B.
DR GO; GO:0030127; C:COPII vesicle coat; IEA:EnsemblFungi.
DR GO; GO:0070971; C:endoplasmic reticulum exit site; IEA:EnsemblFungi.
DR GO; GO:0005789; C:endoplasmic reticulum membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0000139; C:Golgi membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0044233; C:mitochondria-associated endoplasmic reticulum membrane; IEA:EnsemblFungi.
DR GO; GO:0005739; C:mitochondrion; IEA:GOC.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0003924; F:GTPase activity; IEA:EnsemblFungi.
DR GO; GO:0006886; P:intracellular protein transport; IEA:InterPro.
DR GO; GO:0000266; P:mitochondrial fission; IEA:EnsemblFungi.
DR GO; GO:0007006; P:mitochondrial membrane organization; IEA:EnsemblFungi.
DR GO; GO:0006998; P:nuclear envelope organization; IEA:EnsemblFungi.
DR GO; GO:1902953; P:positive regulation of ER to Golgi vesicle-mediated transport; IEA:EnsemblFungi.
DR GO; GO:0070863; P:positive regulation of protein exit from endoplasmic reticulum; IEA:EnsemblFungi.
DR GO; GO:0003400; P:regulation of COPII vesicle coating; IEA:EnsemblFungi.
DR GO; GO:0016050; P:vesicle organization; IEA:EnsemblFungi.
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 3: Inferred from homology;
KW Cytoplasmic vesicle; Endoplasmic reticulum; ER-Golgi transport;
KW Golgi apparatus; GTP-binding; Hydrolase; Membrane; Nucleotide-binding;
KW Protein transport; Reference proteome; Transport.
FT CHAIN 1..190
FT /note="Small COPII coat GTPase SAR1"
FT /id="PRO_0000295516"
FT BINDING 30..37
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 73..76
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 132..135
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
SQ SEQUENCE 190 AA; 21499 MW; 7E3CF6B4BB207070 CRC64;
MAGWDLFGWF RDILSSLGLW NKHGKLLFLG LDNAGKTTLL HMLKNDRLAT LQPTWHPTSE
ELAIGNIKFT TFDLGGHLQA RRLWKDYFPE VNGIVFLVDA ADPERFNEAR IELDALFQIK
ELDNVPFAVL GNKIDSPSAV SETELRAALG LMNTTGYTKI EGQRPIELFM CSVVMKSGYS
EAFKWLSEYI
