ID   OTSA_SALTI              Reviewed;         473 AA.
AC   P0A1Q1; Q9L893;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   27-MAR-2024, entry version 100.
DE   RecName: Full=Trehalose-6-phosphate synthase {ECO:0000250|UniProtKB:P31677};
DE            Short=TPS {ECO:0000250|UniProtKB:P31677};
DE            EC=2.4.1.15 {ECO:0000250|UniProtKB:P31677};
DE   AltName: Full=Alpha,alpha-trehalose-phosphate synthase [UDP-forming] {ECO:0000250|UniProtKB:P31677};
DE   AltName: Full=Osmoregulatory trehalose synthesis protein A {ECO:0000250|UniProtKB:P31677};
DE            Short=OtsA {ECO:0000250|UniProtKB:P31677};
DE   AltName: Full=UDP-glucose-glucosephosphate glucosyltransferase {ECO:0000250|UniProtKB:P31677};
GN   Name=otsA {ECO:0000250|UniProtKB:P31677};
GN   OrderedLocusNames=STY2137, t0949;
OS   Salmonella typhi.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=90370;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CT18;
RX   PubMed=11677608; DOI=10.1038/35101607;
RA   Parkhill J., Dougan G., James K.D., Thomson N.R., Pickard D., Wain J.,
RA   Churcher C.M., Mungall K.L., Bentley S.D., Holden M.T.G., Sebaihia M.,
RA   Baker S., Basham D., Brooks K., Chillingworth T., Connerton P., Cronin A.,
RA   Davis P., Davies R.M., Dowd L., White N., Farrar J., Feltwell T.,
RA   Hamlin N., Haque A., Hien T.T., Holroyd S., Jagels K., Krogh A.,
RA   Larsen T.S., Leather S., Moule S., O'Gaora P., Parry C., Quail M.A.,
RA   Rutherford K.M., Simmonds M., Skelton J., Stevens K., Whitehead S.,
RA   Barrell B.G.;
RT   "Complete genome sequence of a multiple drug resistant Salmonella enterica
RT   serovar Typhi CT18.";
RL   Nature 413:848-852(2001).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700931 / Ty2;
RX   PubMed=12644504; DOI=10.1128/jb.185.7.2330-2337.2003;
RA   Deng W., Liou S.-R., Plunkett G. III, Mayhew G.F., Rose D.J., Burland V.,
RA   Kodoyianni V., Schwartz D.C., Blattner F.R.;
RT   "Comparative genomics of Salmonella enterica serovar Typhi strains Ty2 and
RT   CT18.";
RL   J. Bacteriol. 185:2330-2337(2003).
CC   -!- FUNCTION: Probably involved in the osmoprotection via the biosynthesis
CC       of trehalose. Catalyzes the transfer of glucose from UDP-alpha-D-
CC       glucose (UDP-Glc) to D-glucose 6-phosphate (Glc-6-P) to form trehalose-
CC       6-phosphate. Acts with retention of the anomeric configuration of the
CC       UDP-sugar donor. {ECO:0000250|UniProtKB:P31677}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-glucose 6-phosphate + UDP-alpha-D-glucose = alpha,alpha-
CC         trehalose 6-phosphate + H(+) + UDP; Xref=Rhea:RHEA:18889,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:58223, ChEBI:CHEBI:58429,
CC         ChEBI:CHEBI:58885, ChEBI:CHEBI:61548; EC=2.4.1.15;
CC         Evidence={ECO:0000250|UniProtKB:P31677};
CC   -!- PATHWAY: Glycan biosynthesis; trehalose biosynthesis.
CC       {ECO:0000250|UniProtKB:P31677}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000250|UniProtKB:P31677}.
CC   -!- SIMILARITY: Belongs to the glycosyltransferase 20 family.
CC       {ECO:0000250|UniProtKB:P31677}.
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DR   EMBL; AL513382; CAD05679.1; -; Genomic_DNA.
DR   EMBL; AE014613; AAO68622.1; -; Genomic_DNA.
DR   RefSeq; NP_456494.1; NC_003198.1.
DR   RefSeq; WP_000089042.1; NZ_WSUR01000004.1.
DR   AlphaFoldDB; P0A1Q1; -.
DR   SMR; P0A1Q1; -.
DR   STRING; 220341.gene:17586044; -.
DR   KEGG; stt:t0949; -.
DR   KEGG; sty:STY2137; -.
DR   PATRIC; fig|220341.7.peg.2149; -.
DR   eggNOG; COG0380; Bacteria.
DR   HOGENOM; CLU_002351_7_1_6; -.
DR   OMA; RTIWPLF; -.
DR   OrthoDB; 9815690at2; -.
DR   UniPathway; UPA00299; -.
DR   Proteomes; UP000000541; Chromosome.
DR   Proteomes; UP000002670; Chromosome.
DR   GO; GO:0003825; F:alpha,alpha-trehalose-phosphate synthase (UDP-forming) activity; IEA:UniProtKB-EC.
DR   GO; GO:0005992; P:trehalose biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd03788; GT20_TPS; 1.
DR   Gene3D; 3.40.50.2000; Glycogen Phosphorylase B; 2.
DR   InterPro; IPR001830; Glyco_trans_20.
DR   InterPro; IPR012766; Trehalose_OtsA.
DR   NCBIfam; TIGR02400; trehalose_OtsA; 1.
DR   PANTHER; PTHR10788:SF106; BCDNA.GH08860; 1.
DR   PANTHER; PTHR10788; TREHALOSE-6-PHOSPHATE SYNTHASE; 1.
DR   Pfam; PF00982; Glyco_transf_20; 1.
DR   SUPFAM; SSF53756; UDP-Glycosyltransferase/glycogen phosphorylase; 1.
PE   3: Inferred from homology;
KW   Glycosyltransferase; Transferase.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..473
FT                   /note="Trehalose-6-phosphate synthase"
FT                   /id="PRO_0000122492"
FT   REGION          454..473
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        457..473
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         10
FT                   /ligand="D-glucose 6-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:61548"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         21..22
FT                   /ligand="UDP-alpha-D-glucose"
FT                   /ligand_id="ChEBI:CHEBI:58885"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         76
FT                   /ligand="D-glucose 6-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:61548"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         130
FT                   /ligand="D-glucose 6-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:61548"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         262
FT                   /ligand="UDP-alpha-D-glucose"
FT                   /ligand_id="ChEBI:CHEBI:58885"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         267
FT                   /ligand="UDP-alpha-D-glucose"
FT                   /ligand_id="ChEBI:CHEBI:58885"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         300
FT                   /ligand="D-glucose 6-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:61548"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         339
FT                   /ligand="UDP-alpha-D-glucose"
FT                   /ligand_id="ChEBI:CHEBI:58885"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   BINDING         365..369
FT                   /ligand="UDP-alpha-D-glucose"
FT                   /ligand_id="ChEBI:CHEBI:58885"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   SITE            85
FT                   /note="Involved in alpha anomer selectivity"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
FT   SITE            155
FT                   /note="Involved in alpha anomer selectivity"
FT                   /evidence="ECO:0000250|UniProtKB:P31677"
SQ   SEQUENCE   473 AA;  53581 MW;  E85B3F0AE58E144A CRC64;
     MSRLVVVSNR IAPPDNKGGA GGLAVGVLGA LKAAGGLWFG WSGETGNEDE PLKKVTKGNI
     TWASFNLSEQ DYEDYYCQFS NAVLWPAFHY RLDLVQFQRP AWEGYMRVNA LLADKLLPLI
     KENDIIWVHD YHLLPFASEL RKRGVNNRIG FFLHIPFPTP EIFNALPPHD ELLEQLCDFD
     LLGFQTENDR LAFLDSLSSQ TRVTTRSGKQ HIAWGKDFQT EVYPIGIEPD EIALQAAGPL
     PPKLAQLKAE LKNVKNIFSV ERLDYSKGLP ERFLAYEALL ENYPQHRGKI RYTQIAPTSR
     GEVQAYQDIR HQLETEAGRI NGKYGQLGWT PLYYLNQHFD RKLLMKIFRY SDVGLVTPLR
     DGMNLVAKEF VAAQDPANPG VLVLSQFAGA ANELTSALIV NPYDRDDVAA ALNRALTMPL
     AERISRHAEM LDVIVKNDIN RWQERFIHDL KEVTPRSPER QQQNNVATFP KLA
//