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Database: UniProt
Entry: B3Q0A8_RHIE6
LinkDB: B3Q0A8_RHIE6
Original site: B3Q0A8_RHIE6 
ID   B3Q0A8_RHIE6            Unreviewed;       468 AA.
AC   B3Q0A8;
DT   02-SEP-2008, integrated into UniProtKB/TrEMBL.
DT   02-SEP-2008, sequence version 1.
DT   24-JAN-2024, entry version 76.
DE   RecName: Full=Trehalose-6-phosphate synthase {ECO:0000256|ARBA:ARBA00018539, ECO:0000256|RuleBase:RU362045};
DE            EC=2.4.1.15 {ECO:0000256|ARBA:ARBA00012538, ECO:0000256|RuleBase:RU362045};
DE   AltName: Full=Osmoregulatory trehalose synthesis protein A {ECO:0000256|RuleBase:RU362045};
DE   AltName: Full=UDP-glucose-glucosephosphate glucosyltransferase {ECO:0000256|RuleBase:RU362045};
GN   Name=otsA {ECO:0000313|EMBL:ACE89540.1};
GN   OrderedLocusNames=RHECIAT_CH0000547 {ECO:0000313|EMBL:ACE89540.1};
OS   Rhizobium etli (strain CIAT 652).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Rhizobium/Agrobacterium group; Rhizobium.
OX   NCBI_TaxID=491916 {ECO:0000313|EMBL:ACE89540.1, ECO:0000313|Proteomes:UP000008817};
RN   [1] {ECO:0000313|EMBL:ACE89540.1, ECO:0000313|Proteomes:UP000008817}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CIAT 652 {ECO:0000313|EMBL:ACE89540.1,
RC   ECO:0000313|Proteomes:UP000008817};
RA   Gonzalez V., Acosta J.L., Santamaria R.I., Bustos P.,
RA   Hernandez-Gonzalez I.L., Fernandez J.L., Diaz R., Flores M., Mora J.,
RA   Palacios R., Davila G.;
RT   "Genome diversity and DNA divergence of Rhizobium etli.";
RL   Submitted (APR-2008) to the EMBL/GenBank/DDBJ databases.
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:0000256|RuleBase:RU362045}.
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:0000256|ARBA:ARBA00001516,
CC         ECO:0000256|RuleBase:RU362045};
CC   -!- PATHWAY: Glycan biosynthesis; trehalose biosynthesis.
CC       {ECO:0000256|ARBA:ARBA00005199, ECO:0000256|RuleBase:RU362045}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000256|ARBA:ARBA00011881,
CC       ECO:0000256|RuleBase:RU362045}.
CC   -!- SIMILARITY: Belongs to the glycosyltransferase 20 family.
CC       {ECO:0000256|ARBA:ARBA00008799, ECO:0000256|RuleBase:RU362045}.
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DR   EMBL; CP001074; ACE89540.1; -; Genomic_DNA.
DR   AlphaFoldDB; B3Q0A8; -.
DR   CAZy; GT20; Glycosyltransferase Family 20.
DR   KEGG; rec:RHECIAT_CH0000547; -.
DR   eggNOG; COG0380; Bacteria.
DR   HOGENOM; CLU_002351_7_1_5; -.
DR   OMA; YYGFSNR; -.
DR   UniPathway; UPA00299; -.
DR   Proteomes; UP000008817; 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 {ECO:0000256|ARBA:ARBA00022676,
KW   ECO:0000256|RuleBase:RU362045};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU362045}.
SQ   SEQUENCE   468 AA;  52450 MW;  874869ADBA735E74 CRC64;
     MSRLIVVSNR VPVPSKDGGA AAGGLAVALQ AALQERGGIW MGWSGESSGD REPGALSLRQ
     KGNITYALTD LTDTDVEEYY RGFANRVLWP ICHYRLDLAE YGRKEMAGYF RVNRFFAHRL
     APLIEPDDII WVHDYHLIPL AAELRQMGLK NRIGFFLHIP WPPADILVTM PVHEEIMRGL
     SHYDLVGFQT DYDLQNFAGY LRREGIGDDL GNGLFDSHGR IFKAGAYPIG IETAAFAEFA
     EKAANNVMVQ KTRRSIEGRD MIIGVDRLDY SKGIIQRLEA FERFITCNPA YQNKVTFLQI
     TPKSRSEVPE YEQMQKMVAE QAGRVNGAIG TVDWVPIRYV NRSISRNVLA GLFRLATIGL
     VTPLRDGMNL VAKEYVAAQD PDRPGVLVLS RFAGAARELK GALLVNPYDV EGTGNAIARG
     LAMSIEERRD RWRMMMEHLL SHDVSLWCKE FLRDLVTAPS SDRSEAEG
//
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