ID   PDXH_HAEIN              Reviewed;         210 AA.
AC   P44909;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 2.
DT   02-SEP-2026, entry version 143.
DE   RecName: Full=Pyridoxine/pyridoxamine 5'-phosphate oxidase {ECO:0000255|HAMAP-Rule:MF_01629};
DE            EC=1.4.3.5 {ECO:0000255|HAMAP-Rule:MF_01629};
DE   AltName: Full=PNP/PMP oxidase {ECO:0000255|HAMAP-Rule:MF_01629};
DE            Short=PNPOx {ECO:0000255|HAMAP-Rule:MF_01629};
DE   AltName: Full=Pyridoxal 5'-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_01629};
GN   Name=pdxH {ECO:0000255|HAMAP-Rule:MF_01629};
GN   OrderedLocusNames=HI_0863;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Pasteurellales; Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
CC   -!- FUNCTION: Catalyzes the oxidation of either pyridoxine 5'-phosphate
CC       (PNP) or pyridoxamine 5'-phosphate (PMP) into pyridoxal 5'-phosphate
CC       (PLP). {ECO:0000255|HAMAP-Rule:MF_01629}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=pyridoxamine 5'-phosphate + O2 + H2O = pyridoxal 5'-phosphate
CC         + H2O2 + NH4(+); Xref=Rhea:RHEA:15817, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15379, ChEBI:CHEBI:16240, ChEBI:CHEBI:28938,
CC         ChEBI:CHEBI:58451, ChEBI:CHEBI:597326; EC=1.4.3.5;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01629};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=pyridoxine 5'-phosphate + O2 = pyridoxal 5'-phosphate + H2O2;
CC         Xref=Rhea:RHEA:15149, ChEBI:CHEBI:15379, ChEBI:CHEBI:16240,
CC         ChEBI:CHEBI:58589, ChEBI:CHEBI:597326; EC=1.4.3.5;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01629};
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01629};
CC       Note=Binds 1 FMN per subunit. {ECO:0000255|HAMAP-Rule:MF_01629};
CC   -!- PATHWAY: Cofactor metabolism; pyridoxal 5'-phosphate salvage; pyridoxal
CC       5'-phosphate from pyridoxamine 5'-phosphate: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01629}.
CC   -!- PATHWAY: Cofactor metabolism; pyridoxal 5'-phosphate salvage; pyridoxal
CC       5'-phosphate from pyridoxine 5'-phosphate: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01629}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01629}.
CC   -!- SIMILARITY: Belongs to the pyridoxamine 5'-phosphate oxidase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01629}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAC22522.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; L42023; AAC22522.1; ALT_INIT; Genomic_DNA.
DR   PIR; H64098; H64098.
DR   AlphaFoldDB; P44909; -.
DR   SMR; P44909; -.
DR   STRING; 71421.HI_0863; -.
DR   EnsemblBacteria; AAC22522; AAC22522; HI_0863.
DR   KEGG; hin:HI_0863; -.
DR   PATRIC; fig|71421.8.peg.904; -.
DR   eggNOG; COG0259; Bacteria.
DR   HOGENOM; CLU_032263_2_2_6; -.
DR   OrthoDB; 9780392at2; -.
DR   PhylomeDB; P44909; -.
DR   BioCyc; HINF71421:G1GJ1-904-MONOMER; -.
DR   UniPathway; UPA01068; UER00304.
DR   UniPathway; UPA01068; UER00305.
DR   Proteomes; UP000000579; Chromosome.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0010181; F:FMN binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004733; F:pyridoxamine phosphate oxidase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008615; P:pyridoxine biosynthetic process; IEA:InterPro.
DR   FunFam; 2.30.110.10:FF:000014; Pyridoxine/pyridoxamine 5'-phosphate oxidase; 1.
DR   Gene3D; 2.30.110.10; Electron Transport, Fmn-binding Protein, Chain A; 1.
DR   HAMAP; MF_01629; PdxH; 1.
DR   InterPro; IPR000659; Pyridox_Oxase.
DR   InterPro; IPR019740; Pyridox_Oxase_CS.
DR   InterPro; IPR011576; Pyridox_Oxase_N.
DR   InterPro; IPR019576; Pyridoxamine_oxidase_dimer_C.
DR   InterPro; IPR012349; Split_barrel_FMN-bd.
DR   NCBIfam; TIGR00558; pdxH; 1.
DR   NCBIfam; NF004231; PRK05679.1; 1.
DR   PANTHER; PTHR10851:SF0; PYRIDOXINE-5'-PHOSPHATE OXIDASE; 1.
DR   PANTHER; PTHR10851; PYRIDOXINE-5-PHOSPHATE OXIDASE; 1.
DR   Pfam; PF10590; PNP_phzG_C; 1.
DR   Pfam; PF01243; PNPOx_N; 1.
DR   PIRSF; PIRSF000190; Pyd_amn-ph_oxd; 1.
DR   SUPFAM; SSF50475; FMN-binding split barrel; 1.
DR   PROSITE; PS01064; PYRIDOX_OXIDASE; 1.
PE   3: Inferred from homology;
KW   Flavoprotein; FMN; Oxidoreductase; Pyridoxine biosynthesis;
KW   Reference proteome.
FT   CHAIN           1..210
FT                   /note="Pyridoxine/pyridoxamine 5'-phosphate oxidase"
FT                   /id="PRO_0000167711"
FT   BINDING         7..10
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         60..65
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         65
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         75..76
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         81
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         82
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         104
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         122
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         126
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         130
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         139..140
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         183
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         189..191
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
FT   BINDING         193
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01629"
SQ   SEQUENCE   210 AA;  24500 MW;  46C60A0D0AF6B852 CRC64;
     MELHNIRDEY TKRVLSQHDC HENPISQFEQ WQKEAIHAQV NEPTAMNIAT VDEQGRPNSR
     MVLLKEVNEQ GFVFFTNYLS RKGGCIEHNP YVALTFFWPE LERQVRIEGK AVKIPAEQSD
     KYFATRPYTS RIGAWASEQS AVISNYKSLL AKAALVAAKH PLNVPRPDYW GGYLVVPETV
     EFWQGRPSRL HDRIRYRKES DNWIRERLSP
//