ID   STHA_SHIB3              Reviewed;         466 AA.
AC   B2TWF7;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   10-JUN-2026, entry version 100.
DE   RecName: Full=Soluble pyridine nucleotide transhydrogenase {ECO:0000255|HAMAP-Rule:MF_00247};
DE            Short=STH {ECO:0000255|HAMAP-Rule:MF_00247};
DE            EC=1.6.1.1 {ECO:0000255|HAMAP-Rule:MF_00247};
DE   AltName: Full=NAD(P)(+) transhydrogenase [B-specific] {ECO:0000255|HAMAP-Rule:MF_00247};
GN   Name=sthA {ECO:0000255|HAMAP-Rule:MF_00247};
GN   Synonyms=udhA {ECO:0000255|HAMAP-Rule:MF_00247};
GN   OrderedLocusNames=SbBS512_E4447;
OS   Shigella boydii serotype 18 (strain CDC 3083-94 / BS512).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Enterobacterales; Enterobacteriaceae; Shigella.
OX   NCBI_TaxID=344609;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CDC 3083-94 / BS512;
RA   Rasko D.A., Rosovitz M., Maurelli A.T., Myers G., Seshadri R., Cer R.,
RA   Jiang L., Ravel J., Sebastian Y.;
RT   "Complete sequence of Shigella boydii serotype 18 strain BS512.";
RL   Submitted (MAY-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Conversion of NADPH, generated by peripheral catabolic
CC       pathways, to NADH, which can enter the respiratory chain for energy
CC       generation. {ECO:0000255|HAMAP-Rule:MF_00247}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=NAD(+) + NADPH = NADH + NADP(+); Xref=Rhea:RHEA:11692,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57783, ChEBI:CHEBI:57945,
CC         ChEBI:CHEBI:58349; EC=1.6.1.1; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00247};
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00247};
CC       Note=Binds 1 FAD per subunit. {ECO:0000255|HAMAP-Rule:MF_00247};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00247}.
CC   -!- SIMILARITY: Belongs to the class-I pyridine nucleotide-disulfide
CC       oxidoreductase family. {ECO:0000255|HAMAP-Rule:MF_00247}.
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DR   EMBL; CP001063; ACD06316.1; -; Genomic_DNA.
DR   RefSeq; WP_001120824.1; NC_010658.1.
DR   AlphaFoldDB; B2TWF7; -.
DR   SMR; B2TWF7; -.
DR   STRING; 344609.SbBS512_E4447; -.
DR   PaxDb; 344609-SbBS512_E4447; -.
DR   KEGG; sbc:SbBS512_E4447; -.
DR   HOGENOM; CLU_016755_0_0_6; -.
DR   Proteomes; UP000001030; Chromosome.
DR   GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
DR   GO; GO:0004148; F:dihydrolipoyl dehydrogenase (NADH) activity; IEA:TreeGrafter.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:TreeGrafter.
DR   GO; GO:0003957; F:NAD(P)+ transhydrogenase (Si-specific) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006103; P:2-oxoglutarate metabolic process; IEA:TreeGrafter.
DR   GO; GO:0006739; P:NADP+ metabolic process; IEA:UniProtKB-UniRule.
DR   FunFam; 3.30.390.30:FF:000002; Soluble pyridine nucleotide transhydrogenase; 1.
DR   FunFam; 3.50.50.60:FF:000008; Soluble pyridine nucleotide transhydrogenase; 1.
DR   Gene3D; 3.30.390.30; -; 1.
DR   Gene3D; 3.50.50.60; FAD/NAD(P)-binding domain; 2.
DR   HAMAP; MF_00247; SthA; 1.
DR   InterPro; IPR050151; Class-I_Pyr_Nuc-Dis_Oxidored.
DR   InterPro; IPR036188; FAD/NAD-bd_sf.
DR   InterPro; IPR023753; FAD/NAD-binding_dom.
DR   InterPro; IPR016156; FAD/NAD-linked_Rdtase_dimer_sf.
DR   InterPro; IPR001100; Pyr_nuc-diS_OxRdtase.
DR   InterPro; IPR004099; Pyr_nucl-diS_OxRdtase_dimer.
DR   InterPro; IPR022962; STH_gammaproteobact.
DR   NCBIfam; NF003585; PRK05249.1; 1.
DR   PANTHER; PTHR22912; DISULFIDE OXIDOREDUCTASE; 1.
DR   PANTHER; PTHR22912:SF93; SOLUBLE PYRIDINE NUCLEOTIDE TRANSHYDROGENASE; 1.
DR   Pfam; PF07992; Pyr_redox_2; 1.
DR   Pfam; PF02852; Pyr_redox_dim; 1.
DR   PIRSF; PIRSF000350; Mercury_reductase_MerA; 1.
DR   PRINTS; PR00368; FADPNR.
DR   PRINTS; PR00411; PNDRDTASEI.
DR   SUPFAM; SSF51905; FAD/NAD(P)-binding domain; 1.
DR   SUPFAM; SSF55424; FAD/NAD-linked reductases, dimerisation (C-terminal) domain; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; FAD; Flavoprotein; NAD; NADP; Oxidoreductase;
KW   Reference proteome.
FT   CHAIN           1..466
FT                   /note="Soluble pyridine nucleotide transhydrogenase"
FT                   /id="PRO_1000100862"
FT   BINDING         36..45
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00247"
SQ   SEQUENCE   466 AA;  51588 MW;  48D3CB7B6D991245 CRC64;
     MPHSYDYDAI VIGSGPGGEG AAMGLVKQGA RVAVIERYQN VGGGCTHWGT IPSKALRHAV
     SRIIEFNQNP LYSDHSRLLR SSFADILNHA DNVINQQTRM RQGFYERNHC EILQGNARFV
     DEHTLVLDCP DGSVETLTAE KFVIACGSRP YHPTDVDFTH PRIYDSDSIL SMHHEPRHVL
     IYGAGVIGCE YASIFRGMDV KVDLINTRDR LLAFLDQEMS DSLSYHFWNS GVVIRHNEEY
     EKIEGCDDGV IMHLKSGKKL KADCLLYANG RTGNTDSLAL QNIGLETDSR GQLKVNSMYQ
     TAQPHVYAVG DVIGYPSLAS AAYDQGRIAA QALVKGEATA HLIEDIPTGI YTIPEISSVG
     KTEQQLTAMK VPYEVGRAQF KHLARAQIVG MNVGTLKILF HRETKEILGI HCFGERAAEI
     IHIGQAIMEQ KGGGNTIEYF VNTTFNYPTM AEAYRVAALN GLNRLF
//