ID   TRXB_MYCGE              Reviewed;         315 AA.
AC   P47348; Q49316;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   03-AUG-2022, entry version 137.
DE   RecName: Full=Thioredoxin reductase;
DE            Short=TRXR;
DE            EC=1.8.1.9;
GN   Name=trxB; OrderedLocusNames=MG102;
OS   Mycoplasma genitalium (strain ATCC 33530 / DSM 19775 / NCTC 10195 / G37)
OS   (Mycoplasmoides genitalium).
OC   Bacteria; Tenericutes; Mollicutes; Mycoplasmataceae; Mycoplasma.
OX   NCBI_TaxID=243273;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33530 / DSM 19775 / NCTC 10195 / G37;
RX   PubMed=7569993; DOI=10.1126/science.270.5235.397;
RA   Fraser C.M., Gocayne J.D., White O., Adams M.D., Clayton R.A.,
RA   Fleischmann R.D., Bult C.J., Kerlavage A.R., Sutton G.G., Kelley J.M.,
RA   Fritchman J.L., Weidman J.F., Small K.V., Sandusky M., Fuhrmann J.L.,
RA   Nguyen D.T., Utterback T.R., Saudek D.M., Phillips C.A., Merrick J.M.,
RA   Tomb J.-F., Dougherty B.A., Bott K.F., Hu P.-C., Lucier T.S.,
RA   Peterson S.N., Smith H.O., Hutchison C.A. III, Venter J.C.;
RT   "The minimal gene complement of Mycoplasma genitalium.";
RL   Science 270:397-403(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 16-122.
RC   STRAIN=ATCC 33530 / DSM 19775 / NCTC 10195 / G37;
RX   PubMed=8253680; DOI=10.1128/jb.175.24.7918-7930.1993;
RA   Peterson S.N., Hu P.-C., Bott K.F., Hutchison C.A. III;
RT   "A survey of the Mycoplasma genitalium genome by using random sequencing.";
RL   J. Bacteriol. 175:7918-7930(1993).
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; L43967; AAC71320.1; -; Genomic_DNA.
DR   EMBL; U02197; AAD12483.1; -; Genomic_DNA.
DR   PIR; C64211; C64211.
DR   RefSeq; WP_009885660.1; NZ_AAGX01000002.1.
DR   AlphaFoldDB; P47348; -.
DR   SMR; P47348; -.
DR   STRING; 243273.MG_102; -.
DR   EnsemblBacteria; AAC71320; AAC71320; MG_102.
DR   KEGG; mge:MG_102; -.
DR   eggNOG; COG0492; Bacteria.
DR   HOGENOM; CLU_031864_5_3_14; -.
DR   OMA; VDNFPGY; -.
DR   OrthoDB; 692968at2; -.
DR   BioCyc; MGEN243273:G1GJ2-114-MON; -.
DR   Proteomes; UP000000807; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004791; F:thioredoxin-disulfide reductase activity; IBA:GO_Central.
DR   GO; GO:0045454; P:cell redox homeostasis; IBA:GO_Central.
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; Reference proteome.
FT   CHAIN           1..315
FT                   /note="Thioredoxin reductase"
FT                   /id="PRO_0000166737"
FT   BINDING         45..52
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9P4"
FT   BINDING         288..297
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9P4"
FT   DISULFID        145..148
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9P4"
FT   CONFLICT        113..122
FT                   /note="VFSKTVIYAT -> FLAKLLSMQQ (in Ref. 2)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   315 AA;  34674 MW;  7FDF8FF755C9D424 CRC64;
     MLKVNADFLT KDQVIYDLVI VGAGPAGIAS AIYGKRANLN LAIIEGNTPG GKIVKTNIVE
     NYPGFKTITG PELGLEMYNH LLAFEPVVFY NNLIKIDHLN DTFILYLDNK TTVFSKTVIY
     ATGMEERKLG IEKEDYFYGK GISYCAICDA ALYKGKTVGV VGGGNSAIQE AIYLSSIAKT
     VHLIHRREVF RSDALLVEKL KKISNVVFHL NATVKQLIGQ EKLQTVKLAS TVDKSESEIA
     IDCLFPYIGF ESNNKPVLDL KLNLDQNGFI LGDENMQTNI KGFYVAGDCR SKSFRQIATA
     ISDGVTAVLK VRDDI