ID   DGOD_ENT38              Reviewed;         382 AA.
AC   A4W4R9;
DT   14-OCT-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   03-AUG-2022, entry version 96.
DE   RecName: Full=D-galactonate dehydratase {ECO:0000255|HAMAP-Rule:MF_01289};
DE            Short=GalD {ECO:0000255|HAMAP-Rule:MF_01289};
DE            EC=4.2.1.6 {ECO:0000255|HAMAP-Rule:MF_01289};
GN   Name=dgoD {ECO:0000255|HAMAP-Rule:MF_01289}; OrderedLocusNames=Ent638_0009;
OS   Enterobacter sp. (strain 638).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Enterobacter.
OX   NCBI_TaxID=399742;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=638;
RX   PubMed=20485560; DOI=10.1371/journal.pgen.1000943;
RA   Taghavi S., van der Lelie D., Hoffman A., Zhang Y.B., Walla M.D.,
RA   Vangronsveld J., Newman L., Monchy S.;
RT   "Genome sequence of the plant growth promoting endophytic bacterium
RT   Enterobacter sp. 638.";
RL   PLoS Genet. 6:E1000943-E1000943(2010).
CC   -!- FUNCTION: Catalyzes the dehydration of D-galactonate to 2-keto-3-deoxy-
CC       D-galactonate. {ECO:0000255|HAMAP-Rule:MF_01289}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-galactonate = 2-dehydro-3-deoxy-D-galactonate + H2O;
CC         Xref=Rhea:RHEA:18649, ChEBI:CHEBI:12931, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:57989; EC=4.2.1.6; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01289};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01289};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01289};
CC   -!- PATHWAY: Carbohydrate acid metabolism; D-galactonate degradation; D-
CC       glyceraldehyde 3-phosphate and pyruvate from D-galactonate: step 1/3.
CC       {ECO:0000255|HAMAP-Rule:MF_01289}.
CC   -!- MISCELLANEOUS: Reaction proceeds via an anti dehydration.
CC       {ECO:0000255|HAMAP-Rule:MF_01289}.
CC   -!- SIMILARITY: Belongs to the mandelate racemase/muconate lactonizing
CC       enzyme family. GalD subfamily. {ECO:0000255|HAMAP-Rule:MF_01289}.
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DR   EMBL; CP000653; ABP58699.1; -; Genomic_DNA.
DR   RefSeq; WP_011915277.1; NC_009436.1.
DR   AlphaFoldDB; A4W4R9; -.
DR   SMR; A4W4R9; -.
DR   STRING; 399742.Ent638_0009; -.
DR   EnsemblBacteria; ABP58699; ABP58699; Ent638_0009.
DR   KEGG; ent:Ent638_0009; -.
DR   eggNOG; COG4948; Bacteria.
DR   HOGENOM; CLU_030273_3_2_6; -.
DR   OMA; PRWCFLK; -.
DR   OrthoDB; 1825548at2; -.
DR   UniPathway; UPA00081; UER00518.
DR   Proteomes; UP000000230; Chromosome.
DR   GO; GO:0008869; F:galactonate dehydratase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009063; P:cellular amino acid catabolic process; IEA:InterPro.
DR   GO; GO:0034194; P:D-galactonate catabolic process; IEA:UniProtKB-UniRule.
DR   CDD; cd03325; D-galactonate_dehydratase; 1.
DR   Gene3D; 3.20.20.120; -; 1.
DR   Gene3D; 3.30.390.10; -; 1.
DR   HAMAP; MF_01289; Galacton_dehydrat; 1.
DR   InterPro; IPR036849; Enolase-like_C_sf.
DR   InterPro; IPR029017; Enolase-like_N.
DR   InterPro; IPR029065; Enolase_C-like.
DR   InterPro; IPR023592; Galactonate_deHydtase.
DR   InterPro; IPR018110; Mandel_Rmase/mucon_lact_enz_CS.
DR   InterPro; IPR013342; Mandelate_racemase_C.
DR   InterPro; IPR034593; Mandelate_racemase_DgoD-like.
DR   InterPro; IPR013341; Mandelate_racemase_N_dom.
DR   PANTHER; PTHR48080; PTHR48080; 1.
DR   Pfam; PF13378; MR_MLE_C; 1.
DR   Pfam; PF02746; MR_MLE_N; 1.
DR   SFLD; SFLDF00003; D-galactonate_dehydratase; 1.
DR   SMART; SM00922; MR_MLE; 1.
DR   SUPFAM; SSF51604; SSF51604; 1.
DR   SUPFAM; SSF54826; SSF54826; 1.
DR   PROSITE; PS00908; MR_MLE_1; 1.
DR   PROSITE; PS00909; MR_MLE_2; 1.
PE   3: Inferred from homology;
KW   Lyase; Magnesium; Metal-binding.
FT   CHAIN           1..382
FT                   /note="D-galactonate dehydratase"
FT                   /id="PRO_0000352620"
FT   ACT_SITE        185
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        285
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   BINDING         183
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01289"
FT   BINDING         209
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01289"
FT   BINDING         235
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01289"
FT   SITE            258
FT                   /note="Increases basicity of active site His"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01289"
FT   SITE            310
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01289"
SQ   SEQUENCE   382 AA;  42617 MW;  999E1CF61D653632 CRC64;
     MKITNITTYR LPPRWMFLKI ETDEGVVGWG EPVIEGRART VEAAVHELKE YLIGQDPARI
     NDLWQVMYRA GFYRGGPILM SAIAGIDQAL WDIKGKVLNA PVWQLMGGLV RDKIKAYSWV
     GGDRPAEVID GIKTLRNIGF DTFKLNGCEE MGVIDNSRAV DKAVNTVAQI REAFGNEIEF
     GLDFHGRVSA PMAKVLIKEL EQYRPLFIEE PVLAEQAEYY PKLAAQTHIP IAAGERMFSR
     FEFKRVLEAG GLAILQPDLS HAGGITECYK IAGMAEAYDV ALAPHCPLGP IALAACLHVD
     FVSRNAVFQE QSMGIHYNKG AELLDFVKNK EDFNMEGGFF KPLTKPGLGV EIDEAKVIEL
     SKNAPDWRNP LWRHEDGSVA EW