ID D8PAQ2_9BACT Unreviewed; 347 AA.
AC D8PAQ2;
DT 05-OCT-2010, integrated into UniProtKB/TrEMBL.
DT 05-OCT-2010, sequence version 1.
DT 24-JAN-2024, entry version 67.
DE RecName: Full=4-hydroxythreonine-4-phosphate dehydrogenase {ECO:0000256|HAMAP-Rule:MF_00536};
DE EC=1.1.1.262 {ECO:0000256|HAMAP-Rule:MF_00536};
DE AltName: Full=4-(phosphohydroxy)-L-threonine dehydrogenase {ECO:0000256|HAMAP-Rule:MF_00536};
GN Name=pdxA {ECO:0000256|HAMAP-Rule:MF_00536,
GN ECO:0000313|EMBL:CBK40311.1};
GN ORFNames=NIDE0536 {ECO:0000313|EMBL:CBK40311.1};
OS Nitrospira defluvii.
OC Bacteria; Nitrospirota; Nitrospiria; Nitrospirales; Nitrospiraceae;
OC Nitrospira.
OX NCBI_TaxID=330214 {ECO:0000313|EMBL:CBK40311.1, ECO:0000313|Proteomes:UP000001660};
RN [1] {ECO:0000313|EMBL:CBK40311.1, ECO:0000313|Proteomes:UP000001660}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=20624973; DOI=10.1073/pnas.1003860107;
RA Lucker S., Wagner M., Maixner F., Pelletier E., Koch H., Vacherie B.,
RA Rattei T., Sinninghe Damste J., Spieck E., Le Paslier D., Daims H.;
RT "A Nitrospira metagenome illuminates the physiology and evolution of
RT globally important nitrite-oxidizing bacteria.";
RL Proc. Natl. Acad. Sci. U.S.A. 0:13479-13484(2010).
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:0000256|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:0000256|HAMAP-
CC Rule:MF_00536};
CC -!- COFACTOR:
CC Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00536};
CC Note=Binds 1 divalent metal cation per subunit. {ECO:0000256|HAMAP-
CC 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:0000256|HAMAP-Rule:MF_00536}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00536}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00536}.
CC -!- MISCELLANEOUS: The active site is located at the dimer interface.
CC {ECO:0000256|HAMAP-Rule:MF_00536}.
CC -!- SIMILARITY: Belongs to the PdxA family. {ECO:0000256|HAMAP-
CC Rule:MF_00536}.
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DR EMBL; FP929003; CBK40311.1; -; Genomic_DNA.
DR AlphaFoldDB; D8PAQ2; -.
DR STRING; 330214.NIDE0536; -.
DR KEGG; nde:NIDE0536; -.
DR eggNOG; COG1995; Bacteria.
DR HOGENOM; CLU_040168_0_0_0; -.
DR OrthoDB; 9801783at2; -.
DR UniPathway; UPA00244; UER00312.
DR Proteomes; UP000001660; 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:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0051287; F:NAD binding; IEA:InterPro.
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 Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00536};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00536}; NAD {ECO:0000256|HAMAP-Rule:MF_00536};
KW NADP {ECO:0000256|HAMAP-Rule:MF_00536};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00536}; Pyridoxine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00536};
KW Reference proteome {ECO:0000313|Proteomes:UP000001660}.
FT BINDING 147
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 148
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 177
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 222
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 277
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 285
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 294
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
FT BINDING 303
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00536"
SQ SEQUENCE 347 AA; 36210 MW; 3573922DB3E2F84B CRC64;
MALKRTTKAA RPVLGLTMGD PAGIGPEVIA KALADRALTR LCTPVVVGSR PVMERTIAWL
KLPLQVVDFN PSNGLRLKAG QVAVADPLES PLPKFRMGAA TAVTGAASIA FIKEAVTLAQ
AGSLGGIVTA PINKEAMNMA GFHYPGHTEL LADLTKTTEF GMMIVGGPLK IMFTTTHVAI
NALSPLLTTE RIGKAIRLAH LGLTKYFGIV RPRIGVAALN PHAGEHGLFG NEESTSIAPA
VKLARAAGIK ASDPLPADTL FGKAARGDYD GVVAMYHDQG LIPLKLVAFG TCVNLTVGLP
IIRTSVDHGT AYDIAGKGVA EHGSLLEAVK VAARLAKSWS PVTKTSR
//
