ID   IOLD_CLOBA              Reviewed;         643 AA.
AC   B2V4K0;
DT   14-OCT-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   03-AUG-2022, entry version 76.
DE   RecName: Full=3D-(3,5/4)-trihydroxycyclohexane-1,2-dione hydrolase {ECO:0000255|HAMAP-Rule:MF_01669};
DE            Short=THcHDO hydrolase {ECO:0000255|HAMAP-Rule:MF_01669};
DE            EC=3.7.1.22 {ECO:0000255|HAMAP-Rule:MF_01669};
GN   Name=iolD {ECO:0000255|HAMAP-Rule:MF_01669}; OrderedLocusNames=CLH_1255;
OS   Clostridium botulinum (strain Alaska E43 / Type E3).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=508767;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Alaska E43 / Type E3;
RA   Brinkac L.M., Brown J.L., Bruce D., Detter C., Munk C., Smith L.A.,
RA   Smith T.J., Sutton G., Brettin T.S.;
RT   "Complete genome sequence of Clostridium botulinum E3 str. Alaska E43.";
RL   Submitted (MAY-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Involved in the cleavage of the C1-C2 bond of 3D-(3,5/4)-
CC       trihydroxycyclohexane-1,2-dione (THcHDO) to yield 5-deoxy-glucuronate
CC       (5DG). {ECO:0000255|HAMAP-Rule:MF_01669}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=3D-3,5/4-trihydroxycyclohexane-1,2-dione + H2O = 5-deoxy-D-
CC         glucuronate + H(+); Xref=Rhea:RHEA:25836, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:28446, ChEBI:CHEBI:58852; EC=3.7.1.22;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01669};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01669};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01669};
CC   -!- COFACTOR:
CC       Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01669};
CC       Note=Binds 1 thiamine pyrophosphate per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01669};
CC   -!- PATHWAY: Polyol metabolism; myo-inositol degradation into acetyl-CoA;
CC       acetyl-CoA from myo-inositol: step 3/7. {ECO:0000255|HAMAP-
CC       Rule:MF_01669}.
CC   -!- SIMILARITY: Belongs to the TPP enzyme family. {ECO:0000255|HAMAP-
CC       Rule:MF_01669}.
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DR   EMBL; CP001078; ACD52572.1; -; Genomic_DNA.
DR   RefSeq; WP_012450689.1; NC_010723.1.
DR   AlphaFoldDB; B2V4K0; -.
DR   SMR; B2V4K0; -.
DR   PRIDE; B2V4K0; -.
DR   KEGG; cbt:CLH_1255; -.
DR   HOGENOM; CLU_013748_6_0_9; -.
DR   OMA; PNTYHLE; -.
DR   OrthoDB; 391134at2; -.
DR   UniPathway; UPA00076; UER00145.
DR   GO; GO:0102481; F:3D-(3,5/4)-trihydroxycyclohexane-1,2-dione hydrolase activity; IEA:UniProtKB-EC.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019310; P:inositol catabolic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01669; IolD; 1.
DR   InterPro; IPR029035; DHS-like_NAD/FAD-binding_dom.
DR   InterPro; IPR030817; Myo_inos_IolD.
DR   InterPro; IPR023757; THcHDO_hydrolase_firmi.
DR   InterPro; IPR029061; THDP-binding.
DR   InterPro; IPR012000; Thiamin_PyroP_enz_cen_dom.
DR   InterPro; IPR012001; Thiamin_PyroP_enz_TPP-bd_dom.
DR   InterPro; IPR000399; TPP-bd_CS.
DR   InterPro; IPR045229; TPP_enz.
DR   InterPro; IPR011766; TPP_enzyme-bd_C.
DR   PANTHER; PTHR18968; PTHR18968; 1.
DR   PANTHER; PTHR18968:SF9; PTHR18968:SF9; 1.
DR   Pfam; PF02775; TPP_enzyme_C; 1.
DR   Pfam; PF00205; TPP_enzyme_M; 1.
DR   Pfam; PF02776; TPP_enzyme_N; 1.
DR   SUPFAM; SSF52467; SSF52467; 1.
DR   SUPFAM; SSF52518; SSF52518; 2.
DR   TIGRFAMs; TIGR04377; myo_inos_iolD; 1.
DR   PROSITE; PS00187; TPP_ENZYMES; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Magnesium; Metal-binding; NAD; Thiamine pyrophosphate.
FT   CHAIN           1..643
FT                   /note="3D-(3,5/4)-trihydroxycyclohexane-1,2-dione
FT                   hydrolase"
FT                   /id="PRO_0000352537"
FT   REGION          441..521
FT                   /note="Thiamine pyrophosphate binding"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01669"
FT   BINDING         65
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01669"
FT   BINDING         492
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01669"
FT   BINDING         519
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01669"
SQ   SEQUENCE   643 AA;  71489 MW;  9FBA9241B930D859 CRC64;
     MKSTKMTTAQ ALVRFLDNQY VSFDGKEEKF VHGIFTIFGH GIVVGLGQAL DENTRDLKVY
     QGRNEQGMAH AATAFAKQNN RRKIIACSSS IGPGAANMVT AAATATVNNI PLLLLPGDSF
     ATRQPDPVLQ QIEQSYNLGI TTNDVFKPVC KYWDRVNRPE QLMSAMINAM RVLTDPAETG
     AVCISLPQDV QGESFEFPEY FFKKRVHKIT RPLAVEEEFY ECLNIIKNKK KPIIICGGGV
     RYSEAGDALS KFANKFNIPI GETQAGKSSI KSSDPMNLGG IGVTGNLASN IIAKDADLVI
     GVGTRFSDFT TASKSLFKNP DVEFVTINLS KFHASKLDSC KMVGDAKECL EYLHKLLEKE
     NYISSYKDEI KDAKIAWKEE MKRLTNIKYE ENFEPIIKFR NKESLEEFKK LTDTTITQTS
     ALGLIRECID DDSIIVGASG SLPGDLQRMW ETESLNSYHM EYGYSCMGYE IAAGFGAKLA
     DPEKEVYSIL GDGSYLMLHS ELITSIQENK KVNVLLFDNC GFGCINNLQM SNGIGNLATE
     FRYRNSETNK LNGKLIPIDF AKAAEGYGLK TYTAKNLEEL KNALIDAKKQ KVSTLIDIKV
     LPKTMTDGYE SWWHVGLAEV SEKESVNEAF KNSKKILKGA RKY