ID   SSTT_ENT38              Reviewed;         413 AA.
AC   A4WES2;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   25-MAY-2022, entry version 90.
DE   RecName: Full=Serine/threonine transporter SstT {ECO:0000255|HAMAP-Rule:MF_01582};
DE   AltName: Full=Na(+)/serine-threonine symporter {ECO:0000255|HAMAP-Rule:MF_01582};
GN   Name=sstT {ECO:0000255|HAMAP-Rule:MF_01582}; OrderedLocusNames=Ent638_3544;
OS   Enterobacter sp. (strain 638).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Enterobacter.
OX   NCBI_TaxID=399742;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=638;
RX   PubMed=20485560; DOI=10.1371/journal.pgen.1000943;
RA   Taghavi S., van der Lelie D., Hoffman A., Zhang Y.B., Walla M.D.,
RA   Vangronsveld J., Newman L., Monchy S.;
RT   "Genome sequence of the plant growth promoting endophytic bacterium
RT   Enterobacter sp. 638.";
RL   PLoS Genet. 6:E1000943-E1000943(2010).
CC   -!- FUNCTION: Involved in the import of serine and threonine into the cell,
CC       with the concomitant import of sodium (symport system).
CC       {ECO:0000255|HAMAP-Rule:MF_01582}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-serine(in) + Na(+)(in) = L-serine(out) + Na(+)(out);
CC         Xref=Rhea:RHEA:29575, ChEBI:CHEBI:29101, ChEBI:CHEBI:33384;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01582};
CC       PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:29577;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01582};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-threonine(in) + Na(+)(in) = L-threonine(out) + Na(+)(out);
CC         Xref=Rhea:RHEA:69999, ChEBI:CHEBI:29101, ChEBI:CHEBI:57926;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01582};
CC       PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:70001;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01582};
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01582}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01582}.
CC   -!- SIMILARITY: Belongs to the dicarboxylate/amino acid:cation symporter
CC       (DAACS) (TC 2.A.23) family. {ECO:0000255|HAMAP-Rule:MF_01582}.
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DR   EMBL; CP000653; ABP62202.1; -; Genomic_DNA.
DR   RefSeq; WP_015960528.1; NC_009436.1.
DR   AlphaFoldDB; A4WES2; -.
DR   SMR; A4WES2; -.
DR   STRING; 399742.Ent638_3544; -.
DR   EnsemblBacteria; ABP62202; ABP62202; Ent638_3544.
DR   KEGG; ent:Ent638_3544; -.
DR   eggNOG; COG3633; Bacteria.
DR   HOGENOM; CLU_044581_0_0_6; -.
DR   OMA; PVNLQLC; -.
DR   OrthoDB; 781228at2; -.
DR   Proteomes; UP000000230; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015171; F:amino acid transmembrane transporter activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0015293; F:symporter activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0032329; P:serine transport; IEA:InterPro.
DR   GO; GO:0015826; P:threonine transport; IEA:InterPro.
DR   Gene3D; 1.10.3860.10; -; 1.
DR   HAMAP; MF_01582; Ser_Thr_transp_SstT; 1.
DR   InterPro; IPR001991; Na-dicarboxylate_symporter.
DR   InterPro; IPR036458; Na:dicarbo_symporter_sf.
DR   InterPro; IPR023025; Ser_Thr_transp_SstT.
DR   PANTHER; PTHR42865; PTHR42865; 1.
DR   Pfam; PF00375; SDF; 1.
DR   SUPFAM; SSF118215; SSF118215; 1.
PE   3: Inferred from homology;
KW   Amino-acid transport; Cell inner membrane; Cell membrane; Membrane;
KW   Symport; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..413
FT                   /note="Serine/threonine transporter SstT"
FT                   /id="PRO_1000069283"
FT   TRANSMEM        15..35
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        45..65
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        85..105
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        142..162
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        179..199
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        218..238
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        299..319
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
FT   TRANSMEM        331..351
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01582"
SQ   SEQUENCE   413 AA;  43012 MW;  BF53D267060A2F66 CRC64;
     MTMQSSGLLK RLTQGSLVKQ ILAGLVLGIL LALISKPAAE ATGLLGTLFV GALKAVAPIL
     VLTLVMASIA NHQHGQKTNI RPILWMYLLG TFSAALTAVL VSFIFPSTLQ LSTGATDITP
     PAGIVEVMHG LLLSVVANPI HALINANYIG ILVWAVGLGF ALRHSNQTTK NLINDLSDAV
     TFIVKLVIRF APIGIFGLVS STLATTGFSA LWGYAQLLLV LIGCMAVVAL VINPLLVFLQ
     TRRNPYPLVL MCLRESGVTA FFTRSSAANI PVNMALCEKL NLDRDTYSVS IPLGATVNMA
     GAAITITVLT LAAVNTLGIP VDLPTALLLS VVAALCACGA SGVAGGSLLL IPLACNMFGI
     PNEIAMQVVA VGFIIGVLQD SCETAINSST DVMFTAAVCQ AEDARLAKNA LRG