TRXB_HELPJ
ID TRXB_HELPJ Reviewed; 311 AA.
AC Q9ZL18;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-1999, sequence version 1.
DT 03-AUG-2022, entry version 135.
DE RecName: Full=Thioredoxin reductase;
DE Short=TRXR;
DE EC=1.8.1.9;
GN Name=trxB; OrderedLocusNames=jhp_0764;
OS Helicobacter pylori (strain J99 / ATCC 700824) (Campylobacter pylori J99).
OC Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC Helicobacteraceae; Helicobacter.
OX NCBI_TaxID=85963;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=J99 / ATCC 700824;
RX PubMed=9923682; DOI=10.1038/16495;
RA Alm R.A., Ling L.-S.L., Moir D.T., King B.L., Brown E.D., Doig P.C.,
RA Smith D.R., Noonan B., Guild B.C., deJonge B.L., Carmel G., Tummino P.J.,
RA Caruso A., Uria-Nickelsen M., Mills D.M., Ives C., Gibson R., Merberg D.,
RA Mills S.D., Jiang Q., Taylor D.E., Vovis G.F., Trust T.J.;
RT "Genomic sequence comparison of two unrelated isolates of the human gastric
RT pathogen Helicobacter pylori.";
RL Nature 397:176-180(1999).
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-dithiol + NADP(+) = [thioredoxin]-disulfide +
CC H(+) + NADPH; Xref=Rhea:RHEA:20345, Rhea:RHEA-COMP:10698, Rhea:RHEA-
CC COMP:10700, ChEBI:CHEBI:15378, ChEBI:CHEBI:29950, ChEBI:CHEBI:50058,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349; EC=1.8.1.9;
CC -!- COFACTOR:
CC Name=FAD; Xref=ChEBI:CHEBI:57692;
CC Evidence={ECO:0000250|UniProtKB:P0A9P4};
CC Note=Binds 1 FAD per subunit. {ECO:0000250|UniProtKB:P0A9P4};
CC -!- SUBUNIT: Homodimer. {ECO:0000250|UniProtKB:P0A9P4}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC -!- MISCELLANEOUS: The active site is a redox-active disulfide bond.
CC -!- SIMILARITY: Belongs to the class-II pyridine nucleotide-disulfide
CC oxidoreductase family. {ECO:0000305}.
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DR EMBL; AE001439; AAD06343.1; -; Genomic_DNA.
DR PIR; D71890; D71890.
DR RefSeq; WP_000564402.1; NZ_CP011330.1.
DR AlphaFoldDB; Q9ZL18; -.
DR SMR; Q9ZL18; -.
DR STRING; 85963.jhp_0764; -.
DR PRIDE; Q9ZL18; -.
DR EnsemblBacteria; AAD06343; AAD06343; jhp_0764.
DR KEGG; hpj:jhp_0764; -.
DR PATRIC; fig|85963.30.peg.212; -.
DR eggNOG; COG0492; Bacteria.
DR OMA; VDNFPGY; -.
DR Proteomes; UP000000804; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004791; F:thioredoxin-disulfide reductase activity; IEA:UniProtKB-EC.
DR GO; GO:0019430; P:removal of superoxide radicals; IEA:InterPro.
DR Gene3D; 3.50.50.60; -; 2.
DR InterPro; IPR036188; FAD/NAD-bd_sf.
DR InterPro; IPR023753; FAD/NAD-binding_dom.
DR InterPro; IPR008255; Pyr_nucl-diS_OxRdtase_2_AS.
DR InterPro; IPR005982; Thioredox_Rdtase.
DR Pfam; PF07992; Pyr_redox_2; 1.
DR SUPFAM; SSF51905; SSF51905; 1.
DR TIGRFAMs; TIGR01292; TRX_reduct; 1.
DR PROSITE; PS00573; PYRIDINE_REDOX_2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Disulfide bond; FAD; Flavoprotein; NADP; Oxidoreductase;
KW Redox-active center.
FT CHAIN 1..311
FT /note="Thioredoxin reductase"
FT /id="PRO_0000166734"
FT BINDING 31..39
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250"
FT BINDING 32..39
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:P0A9P4"
FT BINDING 281..290
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000250|UniProtKB:P0A9P4"
FT DISULFID 133..136
FT /note="Redox-active"
FT /evidence="ECO:0000250|UniProtKB:P0A9P4"
SQ SEQUENCE 311 AA; 33433 MW; 4F35C5407E56EC2E CRC64;
MIDCAIIGGG PAGLSAGLYA TRGGVKNAVL FEKGMPGGQI TGSSEIENYP GVKEVVSGLD
FMQPWQEQCF RFGLKHEMTA IQRVSKKGSH FVILAEDGKT FEAKSVIIAT GGSPKRTGIK
GESEYWGKGV STCATCDGFF YKNKEVAVLG GGDTAVEEAI YLANICKKVY LIHRRDGFRC
APITLEHAKN NSKIEFLTPY VVEEIKGDAS GVSSLSIKNT ATNEKRELVV PGLFIFVGYD
VNNAVLKQED NSMLCECDEY GSIVVDFSMK TNVQGLFAAG DIRIFAPKQV VCAASDGATA
ALSVISYLEH H