ID PDXA_CAUVC Reviewed; 333 AA. AC Q9A7N4; DT 31-JAN-2002, integrated into UniProtKB/Swiss-Prot. DT 01-JUN-2001, sequence version 1. DT 27-MAR-2024, entry version 118. DE RecName: Full=4-hydroxythreonine-4-phosphate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_00536}; DE EC=1.1.1.262 {ECO:0000255|HAMAP-Rule:MF_00536}; DE AltName: Full=4-(phosphohydroxy)-L-threonine dehydrogenase {ECO:0000255|HAMAP-Rule:MF_00536}; GN Name=pdxA {ECO:0000255|HAMAP-Rule:MF_00536}; GN OrderedLocusNames=CC_1686; OS Caulobacter vibrioides (strain ATCC 19089 / CB15) (Caulobacter crescentus). OC Bacteria; Pseudomonadota; Alphaproteobacteria; Caulobacterales; OC Caulobacteraceae; Caulobacter. OX NCBI_TaxID=190650; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC 19089 / CB15; RX PubMed=11259647; DOI=10.1073/pnas.061029298; RA Nierman W.C., Feldblyum T.V., Laub M.T., Paulsen I.T., Nelson K.E., RA Eisen J.A., Heidelberg J.F., Alley M.R.K., Ohta N., Maddock J.R., RA Potocka I., Nelson W.C., Newton A., Stephens C., Phadke N.D., Ely B., RA DeBoy R.T., Dodson R.J., Durkin A.S., Gwinn M.L., Haft D.H., Kolonay J.F., RA Smit J., Craven M.B., Khouri H.M., Shetty J., Berry K.J., Utterback T.R., RA Tran K., Wolf A.M., Vamathevan J.J., Ermolaeva M.D., White O., RA Salzberg S.L., Venter J.C., Shapiro L., Fraser C.M.; RT "Complete genome sequence of Caulobacter crescentus."; RL Proc. Natl. Acad. Sci. U.S.A. 98:4136-4141(2001). CC -!- FUNCTION: Catalyzes the NAD(P)-dependent oxidation of 4-(phosphooxy)-L- CC threonine (HTP) into 2-amino-3-oxo-4-(phosphooxy)butyric acid which CC spontaneously decarboxylates to form 3-amino-2-oxopropyl phosphate CC (AHAP). {ECO:0000255|HAMAP-Rule:MF_00536}. CC -!- CATALYTIC ACTIVITY: CC Reaction=4-(phosphooxy)-L-threonine + NAD(+) = 3-amino-2-oxopropyl CC phosphate + CO2 + NADH; Xref=Rhea:RHEA:32275, ChEBI:CHEBI:16526, CC ChEBI:CHEBI:57279, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, CC ChEBI:CHEBI:58452; EC=1.1.1.262; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00536}; CC -!- COFACTOR: CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00536}; CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00536}; CC Name=Co(2+); Xref=ChEBI:CHEBI:48828; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00536}; CC Note=Binds 1 divalent metal cation per subunit. Can use ions such as CC Zn(2+), Mg(2+) or Co(2+). {ECO:0000255|HAMAP-Rule:MF_00536}; CC -!- PATHWAY: Cofactor biosynthesis; pyridoxine 5'-phosphate biosynthesis; CC pyridoxine 5'-phosphate from D-erythrose 4-phosphate: step 4/5. CC {ECO:0000255|HAMAP-Rule:MF_00536}. CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00536}. CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00536}. CC -!- MISCELLANEOUS: The active site is located at the dimer interface. CC {ECO:0000255|HAMAP-Rule:MF_00536}. CC -!- SIMILARITY: Belongs to the PdxA family. {ECO:0000255|HAMAP- CC Rule:MF_00536}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AE005673; AAK23664.1; -; Genomic_DNA. DR PIR; D87458; D87458. DR RefSeq; NP_420496.1; NC_002696.2. DR RefSeq; WP_010919557.1; NC_002696.2. DR AlphaFoldDB; Q9A7N4; -. DR SMR; Q9A7N4; -. DR STRING; 190650.CC_1686; -. DR EnsemblBacteria; AAK23664; AAK23664; CC_1686. DR KEGG; ccr:CC_1686; -. DR PATRIC; fig|190650.5.peg.1715; -. DR eggNOG; COG1995; Bacteria. DR HOGENOM; CLU_040168_1_0_5; -. DR BioCyc; CAULO:CC1686-MONOMER; -. DR UniPathway; UPA00244; UER00312. DR Proteomes; UP000001816; Chromosome. DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell. DR GO; GO:0050570; F:4-hydroxythreonine-4-phosphate dehydrogenase activity; IEA:UniProtKB-UniRule. DR GO; GO:0050897; F:cobalt ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0051287; F:NAD binding; IEA:InterPro. DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0042823; P:pyridoxal phosphate biosynthetic process; IEA:UniProtKB-UniRule. DR GO; GO:0008615; P:pyridoxine biosynthetic process; IEA:UniProtKB-UniRule. DR Gene3D; 3.40.718.10; Isopropylmalate Dehydrogenase; 1. DR HAMAP; MF_00536; PdxA; 1. DR InterPro; IPR037510; PdxA. DR InterPro; IPR005255; PdxA_fam. DR NCBIfam; TIGR00557; pdxA; 1. DR PANTHER; PTHR30004; 4-HYDROXYTHREONINE-4-PHOSPHATE DEHYDROGENASE; 1. DR PANTHER; PTHR30004:SF6; D-THREONATE 4-PHOSPHATE DEHYDROGENASE; 1. DR Pfam; PF04166; PdxA; 1. DR SUPFAM; SSF53659; Isocitrate/Isopropylmalate dehydrogenase-like; 1. PE 3: Inferred from homology; KW Cobalt; Cytoplasm; Magnesium; Metal-binding; NAD; NADP; Oxidoreductase; KW Pyridoxine biosynthesis; Reference proteome; Zinc. FT CHAIN 1..333 FT /note="4-hydroxythreonine-4-phosphate dehydrogenase" FT /id="PRO_0000188803" FT BINDING 133 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 134 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 169 FT /ligand="a divalent metal cation" FT /ligand_id="ChEBI:CHEBI:60240" FT /ligand_note="ligand shared between dimeric partners" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 214 FT /ligand="a divalent metal cation" FT /ligand_id="ChEBI:CHEBI:60240" FT /ligand_note="ligand shared between dimeric partners" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 269 FT /ligand="a divalent metal cation" FT /ligand_id="ChEBI:CHEBI:60240" FT /ligand_note="ligand shared between dimeric partners" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 277 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 286 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" FT BINDING 295 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536" SQ SEQUENCE 333 AA; 34206 MW; 0C6689D5E267D112 CRC64; MTSRPLAISA GDPAGVGAEI IAKAWRALRQ DGPTFVVIGD AQLLASAGGG VKVRAVTRPQ EAAQVFPDAL PVLDIPVLSP VVYGRPSPSH APQIIRWIET GVGLALSGAV SGLVTAPIAK APLYEAGFQF PGHTEFLAEL TAAASMVGAR GPVMMLAAGD LRATLVTIHT ALAKAPSALT TEAIINSGLV TAQALRKDFG IAEPRLAVAA LNPHAGEGGA LGREEIDIIA PAVEALRALG VQASGPAPAD TLFHPEARAR YDGVLCMYHD QALIPVKMLD FWGGVNITLG LPIVRTSPDH GTGFDIAGRG IARPDSLIAA IQLAAKIAAR RGV //