ID   PDXB_KLEP3              Reviewed;         378 AA.
AC   B5XNR7;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   25-NOV-2008, sequence version 1.
DT   03-AUG-2022, entry version 74.
DE   RecName: Full=Erythronate-4-phosphate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01825};
DE            EC=1.1.1.290 {ECO:0000255|HAMAP-Rule:MF_01825};
GN   Name=pdxB {ECO:0000255|HAMAP-Rule:MF_01825}; OrderedLocusNames=KPK_1434;
OS   Klebsiella pneumoniae (strain 342).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX   NCBI_TaxID=507522;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=342;
RX   PubMed=18654632; DOI=10.1371/journal.pgen.1000141;
RA   Fouts D.E., Tyler H.L., DeBoy R.T., Daugherty S., Ren Q., Badger J.H.,
RA   Durkin A.S., Huot H., Shrivastava S., Kothari S., Dodson R.J., Mohamoud Y.,
RA   Khouri H., Roesch L.F.W., Krogfelt K.A., Struve C., Triplett E.W.,
RA   Methe B.A.;
RT   "Complete genome sequence of the N2-fixing broad host range endophyte
RT   Klebsiella pneumoniae 342 and virulence predictions verified in mice.";
RL   PLoS Genet. 4:E1000141-E1000141(2008).
CC   -!- FUNCTION: Catalyzes the oxidation of erythronate-4-phosphate to 3-
CC       hydroxy-2-oxo-4-phosphonooxybutanoate. {ECO:0000255|HAMAP-
CC       Rule:MF_01825}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=4-phospho-D-erythronate + NAD(+) = (R)-3-hydroxy-2-oxo-4-
CC         phosphooxybutanoate + H(+) + NADH; Xref=Rhea:RHEA:18829,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945,
CC         ChEBI:CHEBI:58538, ChEBI:CHEBI:58766; EC=1.1.1.290;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01825};
CC   -!- PATHWAY: Cofactor biosynthesis; pyridoxine 5'-phosphate biosynthesis;
CC       pyridoxine 5'-phosphate from D-erythrose 4-phosphate: step 2/5.
CC       {ECO:0000255|HAMAP-Rule:MF_01825}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01825}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01825}.
CC   -!- SIMILARITY: Belongs to the D-isomer specific 2-hydroxyacid
CC       dehydrogenase family. PdxB subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01825}.
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DR   EMBL; CP000964; ACI11155.1; -; Genomic_DNA.
DR   AlphaFoldDB; B5XNR7; -.
DR   SMR; B5XNR7; -.
DR   EnsemblBacteria; ACI11155; ACI11155; KPK_1434.
DR   KEGG; kpe:KPK_1434; -.
DR   HOGENOM; CLU_019796_4_0_6; -.
DR   OMA; SAPGCNA; -.
DR   OrthoDB; 1638924at2; -.
DR   UniPathway; UPA00244; UER00310.
DR   Proteomes; UP000001734; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0033711; F:4-phosphoerythronate dehydrogenase activity; IEA:UniProtKB-EC.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0046983; F:protein dimerization activity; IEA:InterPro.
DR   GO; GO:0008615; P:pyridoxine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd12158; ErythrP_dh; 1.
DR   Gene3D; 3.30.1370.170; -; 1.
DR   HAMAP; MF_01825; PdxB; 1.
DR   InterPro; IPR006139; D-isomer_2_OHA_DH_cat_dom.
DR   InterPro; IPR029753; D-isomer_DH_CS.
DR   InterPro; IPR029752; D-isomer_DH_CS1.
DR   InterPro; IPR006140; D-isomer_DH_NAD-bd.
DR   InterPro; IPR020921; Erythronate-4-P_DHase.
DR   InterPro; IPR024531; Erythronate-4-P_DHase_dimer.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR038251; PdxB_dimer_sf.
DR   Pfam; PF00389; 2-Hacid_dh; 1.
DR   Pfam; PF02826; 2-Hacid_dh_C; 1.
DR   Pfam; PF11890; DUF3410; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   PROSITE; PS00065; D_2_HYDROXYACID_DH_1; 1.
DR   PROSITE; PS00671; D_2_HYDROXYACID_DH_3; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; NAD; Oxidoreductase; Pyridoxine biosynthesis.
FT   CHAIN           1..378
FT                   /note="Erythronate-4-phosphate dehydrogenase"
FT                   /id="PRO_1000188270"
FT   ACT_SITE        208
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   ACT_SITE        237
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   ACT_SITE        254
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         45
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         66
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         146
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         175
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         232
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         257
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
FT   BINDING         258
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01825"
SQ   SEQUENCE   378 AA;  41294 MW;  7DDBEE907A14DF06 CRC64;
     MKILVDENMP YARELFSRLG DVQAVPGRPV PAEALTDADA LMVRSVTRVN EALLSGKAVK
     FVGTATAGTD HVDQAWLQQA GIGFSAAPGC NAIAVVEYVF SSLLMLAERD GFALRDRTVG
     IVGVGNVGGR LQKRLEALGI KTLLCDPPRA ERGDEGDFRS LDALVQEADV LTFHTPLYKE
     GPYKTQHLAD ESLISRLKPG TILINACRGP VVDNAALLKR LEAGQPLSVV LDVWEPEPDL
     NVELLKRVDI GTAHIAGYTL EGKARGTTQV FEAYSAFIGH PQQVALDTLL PAPEFGRITL
     HGPLDQPTLK RLVHLVYDVR RDDAPLRKVA GVAGEFDKLR KNYQERREWS SLYVQCSDAQ
     AATLLRQLGF NAVHHPVR