PDXA_SYNJA
ID PDXA_SYNJA Reviewed; 349 AA.
AC Q2JSC8;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 07-MAR-2006, sequence version 1.
DT 03-AUG-2022, entry version 90.
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}; OrderedLocusNames=CYA_2324;
OS Synechococcus sp. (strain JA-3-3Ab) (Cyanobacteria bacterium Yellowstone
OS A-Prime).
OC Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC unclassified Synechococcus.
OX NCBI_TaxID=321327;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JA-3-3Ab;
RX PubMed=18059494; DOI=10.1038/ismej.2007.46;
RA Bhaya D., Grossman A.R., Steunou A.-S., Khuri N., Cohan F.M., Hamamura N.,
RA Melendrez M.C., Bateson M.M., Ward D.M., Heidelberg J.F.;
RT "Population level functional diversity in a microbial community revealed by
RT comparative genomic and metagenomic analyses.";
RL ISME J. 1:703-713(2007).
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=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00536};
CC Note=Binds 1 divalent metal cation per subunit. {ECO:0000255|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: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; CP000239; ABD00453.1; -; Genomic_DNA.
DR RefSeq; WP_011431126.1; NC_007775.1.
DR AlphaFoldDB; Q2JSC8; -.
DR SMR; Q2JSC8; -.
DR STRING; 321327.CYA_2324; -.
DR PRIDE; Q2JSC8; -.
DR EnsemblBacteria; ABD00453; ABD00453; CYA_2324.
DR KEGG; cya:CYA_2324; -.
DR eggNOG; COG1995; Bacteria.
DR HOGENOM; CLU_040168_0_0_3; -.
DR OMA; TAQVVMM; -.
DR OrthoDB; 1414545at2; -.
DR UniPathway; UPA00244; UER00312.
DR Proteomes; UP000008818; 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 HAMAP; MF_00536; PdxA; 1.
DR InterPro; IPR037510; PdxA.
DR InterPro; IPR005255; PdxA_fam.
DR PANTHER; PTHR30004; PTHR30004; 1.
DR Pfam; PF04166; PdxA; 1.
DR TIGRFAMs; TIGR00557; pdxA; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Metal-binding; NAD; NADP; Oxidoreductase;
KW Pyridoxine biosynthesis.
FT CHAIN 1..349
FT /note="4-hydroxythreonine-4-phosphate dehydrogenase"
FT /id="PRO_1000051521"
FT BINDING 135
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536"
FT BINDING 170
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 215
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 276
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 284
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536"
FT BINDING 293
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536"
FT BINDING 302
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00536"
SQ SEQUENCE 349 AA; 37136 MW; EFC1717F80A0341E CRC64;
MSLLLPKLAL TLGDPAGIGP EIVLKALADP QVQACAQITV VGERQVLEAT YCLLRQRGAT
DLADPAGIPV LEGGSGFYLE PSRVGRGDVA SGAASFAYLK TAIEEALRGQ FQGIVTAPIA
KYLWHQAGYP FPGQTEVLAQ LSGSERYGML FVARSPHSGW QIRVLLATTH IPLSQVPLTL
TPELVRAKLD LLVGSLRKLF GIVNPVIAVA GLNPHAGEQG QLGQEEKTWL AELLRTYPHA
KIWGPLPPDT MWLAPAQAWY GQGAPAVADA YLALYHDQGL IPVKLLAFDR AVNLTLGLPF
IRTSPDHGTA FDLAGQGVAR AESLKQAILL AAELALSSAA ASRSLQAQR
