KDUI_LACCB
ID KDUI_LACCB Reviewed; 281 AA.
AC B3WB42;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 02-SEP-2008, sequence version 1.
DT 03-AUG-2022, entry version 73.
DE RecName: Full=4-deoxy-L-threo-5-hexosulose-uronate ketol-isomerase {ECO:0000255|HAMAP-Rule:MF_00687};
DE EC=5.3.1.17 {ECO:0000255|HAMAP-Rule:MF_00687};
DE AltName: Full=5-keto-4-deoxyuronate isomerase {ECO:0000255|HAMAP-Rule:MF_00687};
DE AltName: Full=DKI isomerase {ECO:0000255|HAMAP-Rule:MF_00687};
GN Name=kduI {ECO:0000255|HAMAP-Rule:MF_00687}; OrderedLocusNames=LCABL_28610;
OS Lacticaseibacillus casei (strain BL23) (Lactobacillus casei).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC Lacticaseibacillus.
OX NCBI_TaxID=543734;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BL23;
RA Maze A., Boel G., Bourand A., Loux V., Gibrat J.F., Zuniga M., Hartke A.,
RA Deutscher J.;
RT "Lactobacillus casei BL23 complete genome sequence.";
RL Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the isomerization of 5-dehydro-4-deoxy-D-
CC glucuronate to 3-deoxy-D-glycero-2,5-hexodiulosonate.
CC {ECO:0000255|HAMAP-Rule:MF_00687}.
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; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00687};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00687};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00687};
CC -!- PATHWAY: Glycan metabolism; pectin degradation; 2-dehydro-3-deoxy-D-
CC gluconate from pectin: step 4/5. {ECO:0000255|HAMAP-Rule:MF_00687}.
CC -!- SIMILARITY: Belongs to the KduI family. {ECO:0000255|HAMAP-
CC Rule:MF_00687}.
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DR EMBL; FM177140; CAQ67911.1; -; Genomic_DNA.
DR AlphaFoldDB; B3WB42; -.
DR SMR; B3WB42; -.
DR KEGG; lcb:LCABL_28610; -.
DR HOGENOM; CLU_062609_0_0_9; -.
DR OMA; TFIWAMA; -.
DR UniPathway; UPA00545; UER00826.
DR GO; GO:0008697; F:4-deoxy-L-threo-5-hexosulose-uronate ketol-isomerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
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; Zinc.
FT CHAIN 1..281
FT /note="4-deoxy-L-threo-5-hexosulose-uronate ketol-
FT isomerase"
FT /id="PRO_1000131886"
FT BINDING 198
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00687"
FT BINDING 200
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00687"
FT BINDING 205
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00687"
FT BINDING 248
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00687"
SQ SEQUENCE 281 AA; 31767 MW; FD0D4CE07313D991 CRC64;
MAFHMATRYA HSPEDIKHFD TTKLRQEFLM EKIFNAGDIL LTYTYNDRMI FGGVVPTESS
LEIKLSKELG VDFFLQCREL GVINIGGPGS IIVDGDKAAM VKQDGYYIGM GTKQVVFASD
NPANPAKFYV VSTPAHKTYP NKKLPFANAL AKPMGDQQHL NKRTIYKYID ASQMATCQLQ
MGYTVLEPGS SWNTMPAHTH ARRMETYMYF DFAEPDTRVL HLLGESTETR HIALFNEQAV
VNPSWSIHCG VGTTNYAFIW AMCGENQTYD DMDQVPMNEL R
