KDUI2_BACTN
ID KDUI2_BACTN Reviewed; 292 AA.
AC Q8A0B5;
DT 25-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT 25-JUL-2003, sequence version 2.
DT 03-AUG-2022, entry version 105.
DE RecName: Full=4-deoxy-L-threo-5-hexosulose-uronate ketol-isomerase 2;
DE EC=5.3.1.17;
DE AltName: Full=5-keto-4-deoxyuronate isomerase 2;
DE AltName: Full=DKI isomerase 2;
GN Name=kduI2; OrderedLocusNames=BT_4106;
OS Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 /
OS CCUG 10774 / NCTC 10582 / VPI-5482 / E50).
OC Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Bacteroidaceae;
OC Bacteroides.
OX NCBI_TaxID=226186;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 /
RC VPI-5482 / E50;
RX PubMed=12663928; DOI=10.1126/science.1080029;
RA Xu J., Bjursell M.K., Himrod J., Deng S., Carmichael L.K., Chiang H.C.,
RA Hooper L.V., Gordon J.I.;
RT "A genomic view of the human-Bacteroides thetaiotaomicron symbiosis.";
RL Science 299:2074-2076(2003).
CC -!- FUNCTION: Catalyzes the isomerization of 5-dehydro-4-deoxy-D-
CC glucuronate to 3-deoxy-D-glycero-2,5-hexodiulosonate. {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=5-dehydro-4-deoxy-D-glucuronate = 3-deoxy-D-glycero-2,5-
CC hexodiulosonate; Xref=Rhea:RHEA:23896, ChEBI:CHEBI:17117,
CC ChEBI:CHEBI:29071; EC=5.3.1.17;
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000250};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000250};
CC -!- PATHWAY: Glycan metabolism; pectin degradation; 2-dehydro-3-deoxy-D-
CC gluconate from pectin: step 4/5.
CC -!- SIMILARITY: Belongs to the KduI family. {ECO:0000305}.
CC -!- SEQUENCE CAUTION:
CC Sequence=AAO79211.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; AE015928; AAO79211.1; ALT_INIT; Genomic_DNA.
DR RefSeq; NP_813017.1; NC_004663.1.
DR AlphaFoldDB; Q8A0B5; -.
DR SMR; Q8A0B5; -.
DR STRING; 226186.BT_4106; -.
DR PaxDb; Q8A0B5; -.
DR PRIDE; Q8A0B5; -.
DR EnsemblBacteria; AAO79211; AAO79211; BT_4106.
DR KEGG; bth:BT_4106; -.
DR PATRIC; fig|226186.12.peg.4171; -.
DR eggNOG; COG3717; Bacteria.
DR HOGENOM; CLU_062609_0_0_10; -.
DR InParanoid; Q8A0B5; -.
DR OMA; TFIWAMA; -.
DR UniPathway; UPA00545; UER00826.
DR Proteomes; UP000001414; Chromosome.
DR GO; GO:0008697; F:4-deoxy-L-threo-5-hexosulose-uronate ketol-isomerase activity; IBA:GO_Central.
DR GO; GO:0046872; F:metal ion binding; IBA:GO_Central.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0019698; P:D-galacturonate catabolic process; IBA:GO_Central.
DR GO; GO:0042840; P:D-glucuronate catabolic process; IBA:GO_Central.
DR GO; GO:0045490; P:pectin catabolic process; IEA:UniProtKB-UniRule.
DR Gene3D; 2.60.120.10; -; 1.
DR Gene3D; 2.60.120.520; -; 1.
DR HAMAP; MF_00687; KduI; 1.
DR InterPro; IPR007045; KduI.
DR InterPro; IPR021120; KduI/IolB_isomerase.
DR InterPro; IPR027449; KduI_N.
DR InterPro; IPR014710; RmlC-like_jellyroll.
DR InterPro; IPR011051; RmlC_Cupin_sf.
DR PANTHER; PTHR38461; PTHR38461; 1.
DR Pfam; PF04962; KduI; 1.
DR PIRSF; PIRSF006625; KduI; 1.
DR SUPFAM; SSF51182; SSF51182; 1.
PE 3: Inferred from homology;
KW Isomerase; Metal-binding; Reference proteome; Zinc.
FT CHAIN 1..292
FT /note="4-deoxy-L-threo-5-hexosulose-uronate ketol-isomerase
FT 2"
FT /id="PRO_0000215483"
FT BINDING 210
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
FT BINDING 212
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
FT BINDING 217
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
FT BINDING 259
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
SQ SEQUENCE 292 AA; 33051 MW; 18B129469B7A5E52 CRC64;
MSASAQVNYK MQVACNPQDV KTYNTNRLRS SFLMEKVMVP DQINVTYSMY DRLIFGGAVP
ATKELVLETI DPLKAKYFLE RRELGVINIG GEGIVTVDGK EYTLNFKDAL YVGRGKQKVT
FKSKDASKPA KFYINSATAH KEYKTQLITI DGRKGSLKAN SFAAGKMEES NDRVINQLIV
NNVLEEGPCQ LQMGLTELKP GSVWNTMPAH THSRRVEAYF YFNVPEGNSI CHFMGEPQEE
RIVWMQNEQA IMSPEWSIHA AAGTSNYMFI WGMAGENLDY GDMDKIKYTE MR