ID   IOLD_CLOBB              Reviewed;         643 AA.
AC   B2TJ86;
DT   14-OCT-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   03-AUG-2022, entry version 82.
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=CLL_A1304;
OS   Clostridium botulinum (strain Eklund 17B / Type B).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=935198;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Eklund 17B / Type B;
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 sequence of Clostridium botulinum strain Eklund.";
RL   Submitted (APR-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; CP001056; ACD24665.1; -; Genomic_DNA.
DR   RefSeq; WP_012425404.1; NC_018648.1.
DR   AlphaFoldDB; B2TJ86; -.
DR   SMR; B2TJ86; -.
DR   PRIDE; B2TJ86; -.
DR   EnsemblBacteria; ACD24665; ACD24665; CLL_A1304.
DR   KEGG; cbk:CLL_A1304; -.
DR   HOGENOM; CLU_013748_6_0_9; -.
DR   OMA; PNTYHLE; -.
DR   OrthoDB; 391134at2; -.
DR   UniPathway; UPA00076; UER00145.
DR   Proteomes; UP000001195; Chromosome.
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_0000352538"
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;  71510 MW;  8255AADD936968B5 CRC64;
     MKSTKMTTAQ ALVKFLDNQY VSFDGKEEKF VHGIFTIFGH GIVVGLGQAL DENPRGLKVY
     QGRNEQGMAH AATAFAKQNN RRKIIACSSS IGPGAANMVT AAATATVNNI PLLLLPGDSF
     ATRQPDPVLQ QIEQSYNLGI TTNDVFKPVC KYWDRVNRPE QLMSAMINAM RVLTDPAETG
     AVCIALPQDV QGESFEFPEY FFKKRVHKIT RPLAVEEEFY ECLNIIKNKK KPIIICGGGV
     RYSEAGDTLS KFANRFNIPI GETQAGKSSI KSSDLMNLGG IGVTGNLAAN IIAKDADLVI
     GVGTRFSDFT TASKSLFENP DVEFVTINLS KFHASKLDSC KMVGDVKECL EYLYKLLEKE
     NYISSYKDEI KDAKMAWKEE MKKLTNIKYE ENFDPIIKFR NKESLEEFKK LTDTTITQTS
     ALGLIRECID NDAIIVGASG SLPGDLQRMW ETESLNSYHM EYGYSCMGYE IAAGFGAKLA
     EPEKEVYSIL GDGSYLMLHS ELITSIQENK KVNVLLFDNC GFGCINNLQM SNGIGNLATE
     FRYRNDETNK LNGKLIPIDF AKAAAGYGLK TYTAKNLEEL KNALIDAKKQ RVSTLIDIKV
     LPKTMTDGYE SWWHVGLAEV SEKESVNKAF ENNKKVLKSA RKY