ID   HGD_RHOP2               Reviewed;         448 AA.
AC   Q2J1P2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   07-MAR-2006, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Homogentisate 1,2-dioxygenase {ECO:0000255|HAMAP-Rule:MF_00334};
DE            Short=HGDO {ECO:0000255|HAMAP-Rule:MF_00334};
DE            EC=1.13.11.5 {ECO:0000255|HAMAP-Rule:MF_00334};
DE   AltName: Full=Homogentisate oxygenase {ECO:0000255|HAMAP-Rule:MF_00334};
DE   AltName: Full=Homogentisic acid oxidase {ECO:0000255|HAMAP-Rule:MF_00334};
DE   AltName: Full=Homogentisicase {ECO:0000255|HAMAP-Rule:MF_00334};
GN   Name=hmgA {ECO:0000255|HAMAP-Rule:MF_00334}; OrderedLocusNames=RPB_0907;
OS   Rhodopseudomonas palustris (strain HaA2).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=316058;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HaA2;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Chain P., Malfatti S., Shin M.,
RA   Vergez L., Schmutz J., Larimer F., Land M., Hauser L., Pelletier D.A.,
RA   Kyrpides N., Anderson I., Oda Y., Harwood C.S., Richardson P.;
RT   "Complete sequence of Rhodopseudomonas palustris HaA2.";
RL   Submitted (JAN-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Involved in the catabolism of homogentisate (2,5-
CC       dihydroxyphenylacetate or 2,5-OH-PhAc), a central intermediate in the
CC       degradation of phenylalanine and tyrosine. Catalyzes the oxidative ring
CC       cleavage of the aromatic ring of homogentisate to yield
CC       maleylacetoacetate. {ECO:0000255|HAMAP-Rule:MF_00334}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=homogentisate + O2 = 4-maleylacetoacetate + H(+);
CC         Xref=Rhea:RHEA:15449, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC         ChEBI:CHEBI:16169, ChEBI:CHEBI:17105; EC=1.13.11.5;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00334};
CC   -!- COFACTOR:
CC       Name=Fe cation; Xref=ChEBI:CHEBI:24875;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00334};
CC   -!- PATHWAY: Amino-acid degradation; L-phenylalanine degradation;
CC       acetoacetate and fumarate from L-phenylalanine: step 4/6.
CC       {ECO:0000255|HAMAP-Rule:MF_00334}.
CC   -!- SUBUNIT: Hexamer; dimer of trimers. {ECO:0000255|HAMAP-Rule:MF_00334}.
CC   -!- SIMILARITY: Belongs to the homogentisate dioxygenase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00334}.
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DR   EMBL; CP000250; ABD05618.1; -; Genomic_DNA.
DR   RefSeq; WP_011439807.1; NC_007778.1.
DR   AlphaFoldDB; Q2J1P2; -.
DR   SMR; Q2J1P2; -.
DR   STRING; 316058.RPB_0907; -.
DR   EnsemblBacteria; ABD05618; ABD05618; RPB_0907.
DR   KEGG; rpb:RPB_0907; -.
DR   eggNOG; COG3508; Bacteria.
DR   HOGENOM; CLU_027174_0_0_5; -.
DR   OMA; FMFETRW; -.
DR   OrthoDB; 193687at2; -.
DR   UniPathway; UPA00139; UER00339.
DR   Proteomes; UP000008809; Chromosome.
DR   GO; GO:0004411; F:homogentisate 1,2-dioxygenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006559; P:L-phenylalanine catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0006572; P:tyrosine catabolic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.60.120.10; -; 1.
DR   HAMAP; MF_00334; Homogentis_dioxygen; 1.
DR   InterPro; IPR005708; Homogentis_dOase.
DR   InterPro; IPR022950; Homogentis_dOase_bac.
DR   InterPro; IPR014710; RmlC-like_jellyroll.
DR   InterPro; IPR011051; RmlC_Cupin_sf.
DR   PANTHER; PTHR11056; PTHR11056; 1.
DR   Pfam; PF04209; HgmA; 1.
DR   SUPFAM; SSF51182; SSF51182; 1.
DR   TIGRFAMs; TIGR01015; hmgA; 1.
PE   3: Inferred from homology;
KW   Dioxygenase; Iron; Metal-binding; Oxidoreductase; Phenylalanine catabolism;
KW   Tyrosine catabolism.
FT   CHAIN           1..448
FT                   /note="Homogentisate 1,2-dioxygenase"
FT                   /id="PRO_1000019540"
FT   ACT_SITE        303
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00334"
FT   BINDING         346
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00334"
FT   BINDING         352
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00334"
FT   BINDING         361
FT                   /ligand="homogentisate"
FT                   /ligand_id="ChEBI:CHEBI:16169"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00334"
FT   BINDING         382
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00334"
FT   BINDING         382
FT                   /ligand="homogentisate"
FT                   /ligand_id="ChEBI:CHEBI:16169"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00334"
SQ   SEQUENCE   448 AA;  49544 MW;  55E2497583E035F0 CRC64;
     MNINAAPQII GHGSQGVTPG YMSGFGNSFE TEALPGALPI GRNSPQRAAY GLYAEQLSGS
     PFTAPRGANE RSWLYRIRPS VKHSGRFTKA DMGLWRSAPC LEYDMPIAQL RWDAPSMPQE
     DLTFLQGVRT MTTAGDVNTQ AGMATHMYLI TQSMVDQHFY NADGELMFVP QQGSLRLVTE
     FGVISIEPAE IAVIPRGVKF RVELVDGPAR GYLCENYGGA FTLPERGPIG ANCLANSRDF
     LTPVAAYEDR DVPTELFVKW GGALWQTTLP HSPIDVVAWH GNYAPYKYDL RTFSPVGAIG
     FDHPDPSIFT VLTSPSETAG TANIDFVIFP ERWMVAENTF RPPWYHMNIM SEFMGLICGV
     YDAKPQGFVP GGASLHNMML PHGPDREAFD HASNGELKPV KLTGTMAFMF ETRYPQRVTE
     YAATAGTLQD DYADCWRGLE KRFDPSRP