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Database: UniProt
Entry: Q5QUE2
LinkDB: Q5QUE2
Original site: Q5QUE2 
ID   PDXB_IDILO              Reviewed;         381 AA.
AC   Q5QUE2;
DT   24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   04-JAN-2005, sequence version 1.
DT   16-JAN-2019, entry version 101.
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=IL1020;
OS   Idiomarina loihiensis (strain ATCC BAA-735 / DSM 15497 / L2-TR).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Idiomarinaceae; Idiomarina.
OX   NCBI_TaxID=283942;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-735 / DSM 15497 / L2-TR;
RX   PubMed=15596722; DOI=10.1073/pnas.0407638102;
RA   Hou S., Saw J.H., Lee K.S., Freitas T.A., Belisle C., Kawarabayasi Y.,
RA   Donachie S.P., Pikina A., Galperin M.Y., Koonin E.V., Makarova K.S.,
RA   Omelchenko M.V., Sorokin A., Wolf Y.I., Li Q.X., Keum Y.S.,
RA   Campbell S., Denery J., Aizawa S., Shibata S., Malahoff A., Alam M.;
RT   "Genome sequence of the deep-sea gamma-proteobacterium Idiomarina
RT   loihiensis reveals amino acid fermentation as a source of carbon and
RT   energy.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:18036-18041(2004).
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
CC       biosynthesis; pyridoxine 5'-phosphate from D-erythrose 4-
CC       phosphate: step 2/5. {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}.
DR   EMBL; AE017340; AAV81860.1; -; Genomic_DNA.
DR   RefSeq; WP_011234271.1; NC_006512.1.
DR   ProteinModelPortal; Q5QUE2; -.
DR   SMR; Q5QUE2; -.
DR   STRING; 283942.IL1020; -.
DR   EnsemblBacteria; AAV81860; AAV81860; IL1020.
DR   KEGG; ilo:IL1020; -.
DR   eggNOG; ENOG4105CJ0; Bacteria.
DR   eggNOG; COG0111; LUCA.
DR   HOGENOM; HOG000234432; -.
DR   KO; K03473; -.
DR   OMA; SAPGCNA; -.
DR   OrthoDB; 1638924at2; -.
DR   BioCyc; ILOI283942:IL_RS05230-MONOMER; -.
DR   UniPathway; UPA00244; UER00310.
DR   Proteomes; UP000001171; 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; 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   PANTHER; PTHR42938:SF3; PTHR42938:SF3; 1.
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.
PE   3: Inferred from homology;
KW   Complete proteome; Cytoplasm; NAD; Oxidoreductase;
KW   Pyridoxine biosynthesis.
FT   CHAIN         1    381       Erythronate-4-phosphate dehydrogenase.
FT                                /FTId=PRO_0000297443.
FT   NP_BIND     207    209       NAD. {ECO:0000255|HAMAP-Rule:MF_01825}.
FT   ACT_SITE    209    209       {ECO:0000255|HAMAP-Rule:MF_01825}.
FT   ACT_SITE    238    238       {ECO:0000255|HAMAP-Rule:MF_01825}.
FT   ACT_SITE    255    255       Proton donor. {ECO:0000255|HAMAP-
FT                                Rule:MF_01825}.
FT   BINDING      45     45       Substrate. {ECO:0000255|HAMAP-
FT                                Rule:MF_01825}.
FT   BINDING      67     67       Substrate. {ECO:0000255|HAMAP-
FT                                Rule:MF_01825}.
FT   BINDING     148    148       NAD. {ECO:0000255|HAMAP-Rule:MF_01825}.
FT   BINDING     233    233       NAD. {ECO:0000255|HAMAP-Rule:MF_01825}.
FT   BINDING     258    258       NAD; via amide nitrogen.
FT                                {ECO:0000255|HAMAP-Rule:MF_01825}.
SQ   SEQUENCE   381 AA;  42036 MW;  A21218EE26A438D5 CRC64;
     MKIVADQNIP ALSDLLSGAG TLSYFSERIP PQKLLAEADA LLVRSVTQVD EVLLEQAPEL
     KFVASATIGT EHINLQALEE RGIGFAHAPG ANAQSVGEYV LCAVLNWLSD QPRYVADEID
     VAIVGAGHTG KAAGKRLEAL GLNVHYYDPP LCKKGVKFVH DHWQRVLTAD IISCHVPLTR
     DGDFPTQHLF ENTALQSLHS QQLLINASRG AVIDNNALLE RVEQGERPSL VLDVWENEPE
     VLSGLVPYVD IATPHIAGHS LEGKVGGAVM ISNALLEHFG KPADKTLSDV LPGKAWNERD
     AGGLNSLESL NLWAKEHYDL FRDDELFRQQ GLTTEGFDSL RRNYRKESPR REFINQVVTC
     HNSEQYIQFL QLGFSARLLS K
//
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