ID HCHA_ECOL6 Reviewed; 283 AA.
AC P59331;
DT 22-FEB-2003, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 27-MAR-2024, entry version 104.
DE RecName: Full=Protein/nucleic acid deglycase HchA {ECO:0000255|HAMAP-Rule:MF_01046};
DE EC=3.1.2.- {ECO:0000255|HAMAP-Rule:MF_01046};
DE EC=3.5.1.- {ECO:0000255|HAMAP-Rule:MF_01046};
DE EC=3.5.1.124 {ECO:0000255|HAMAP-Rule:MF_01046};
DE AltName: Full=Maillard deglycase {ECO:0000255|HAMAP-Rule:MF_01046};
GN Name=hchA {ECO:0000255|HAMAP-Rule:MF_01046}; OrderedLocusNames=c2385;
OS Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=199310;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CFT073 / ATCC 700928 / UPEC;
RX PubMed=12471157; DOI=10.1073/pnas.252529799;
RA Welch R.A., Burland V., Plunkett G. III, Redford P., Roesch P., Rasko D.,
RA Buckles E.L., Liou S.-R., Boutin A., Hackett J., Stroud D., Mayhew G.F.,
RA Rose D.J., Zhou S., Schwartz D.C., Perna N.T., Mobley H.L.T.,
RA Donnenberg M.S., Blattner F.R.;
RT "Extensive mosaic structure revealed by the complete genome sequence of
RT uropathogenic Escherichia coli.";
RL Proc. Natl. Acad. Sci. U.S.A. 99:17020-17024(2002).
CC -!- FUNCTION: Protein and nucleotide deglycase that catalyzes the
CC deglycation of the Maillard adducts formed between amino groups of
CC proteins or nucleotides and reactive carbonyl groups of glyoxals. Thus,
CC functions as a protein deglycase that repairs methylglyoxal- and
CC glyoxal-glycated proteins, and releases repaired proteins and lactate
CC or glycolate, respectively. Deglycates cysteine, arginine and lysine
CC residues in proteins, and thus reactivates these proteins by reversing
CC glycation by glyoxals. Acts on early glycation intermediates
CC (hemithioacetals and aminocarbinols), preventing the formation of
CC Schiff bases and advanced glycation endproducts (AGE). Also functions
CC as a nucleotide deglycase able to repair glycated guanine in the free
CC nucleotide pool (GTP, GDP, GMP, dGTP) and in DNA and RNA. Is thus
CC involved in a major nucleotide repair system named guanine glycation
CC repair (GG repair), dedicated to reversing methylglyoxal and glyoxal
CC damage via nucleotide sanitization and direct nucleic acid repair.
CC Plays an important role in protecting cells from carbonyl stress.
CC {ECO:0000255|HAMAP-Rule:MF_01046}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(omega)-(1-hydroxy-2-oxopropyl)-L-arginyl-[protein] =
CC H(+) + L-arginyl-[protein] + lactate; Xref=Rhea:RHEA:49548,
CC Rhea:RHEA-COMP:10532, Rhea:RHEA-COMP:12428, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:24996, ChEBI:CHEBI:29965,
CC ChEBI:CHEBI:131708; EC=3.5.1.124; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(6)-(1-hydroxy-2-oxopropyl)-L-lysyl-[protein] = H(+) +
CC L-lysyl-[protein] + lactate; Xref=Rhea:RHEA:49552, Rhea:RHEA-
CC COMP:9752, Rhea:RHEA-COMP:12429, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:24996, ChEBI:CHEBI:29969,
CC ChEBI:CHEBI:131709; EC=3.5.1.124; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + S-(1-hydroxy-2-oxopropyl)-L-cysteinyl-[protein] = H(+) +
CC L-cysteinyl-[protein] + lactate; Xref=Rhea:RHEA:49556, Rhea:RHEA-
CC COMP:10131, Rhea:RHEA-COMP:12430, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:24996, ChEBI:CHEBI:29950,
CC ChEBI:CHEBI:131710; EC=3.5.1.124; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(omega)-(1-hydroxy-2-oxoethyl)-L-arginyl-[protein] =
CC glycolate + H(+) + L-arginyl-[protein]; Xref=Rhea:RHEA:57188,
CC Rhea:RHEA-COMP:10532, Rhea:RHEA-COMP:14844, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29805, ChEBI:CHEBI:29965,
CC ChEBI:CHEBI:141553; EC=3.5.1.124; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(6)-(1-hydroxy-2-oxoethyl)-L-lysyl-[protein] =
CC glycolate + H(+) + L-lysyl-[protein]; Xref=Rhea:RHEA:57192,
CC Rhea:RHEA-COMP:9752, Rhea:RHEA-COMP:14845, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29805, ChEBI:CHEBI:29969,
CC ChEBI:CHEBI:141554; EC=3.5.1.124; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + S-(1-hydroxy-2-oxoethyl)-L-cysteinyl-[protein] =
CC glycolate + H(+) + L-cysteinyl-[protein]; Xref=Rhea:RHEA:57196,
CC Rhea:RHEA-COMP:10131, Rhea:RHEA-COMP:14846, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29805, ChEBI:CHEBI:29950,
CC ChEBI:CHEBI:141555; EC=3.5.1.124; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxopropyl)-dGTP = dGTP + H(+) +
CC lactate; Xref=Rhea:RHEA:57244, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:24996, ChEBI:CHEBI:61429, ChEBI:CHEBI:141569;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxopropyl)-GTP = GTP + H(+) + lactate;
CC Xref=Rhea:RHEA:57256, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:24996, ChEBI:CHEBI:37565, ChEBI:CHEBI:141570;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxopropyl)-GDP = GDP + H(+) + lactate;
CC Xref=Rhea:RHEA:57260, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:24996, ChEBI:CHEBI:58189, ChEBI:CHEBI:141573;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxopropyl)-GMP = GMP + H(+) + lactate;
CC Xref=Rhea:RHEA:57268, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:24996, ChEBI:CHEBI:58115, ChEBI:CHEBI:141575;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxoethyl)-dGTP = dGTP + glycolate +
CC H(+); Xref=Rhea:RHEA:57248, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29805, ChEBI:CHEBI:61429, ChEBI:CHEBI:141572;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxoethyl)-GTP = glycolate + GTP +
CC H(+); Xref=Rhea:RHEA:57252, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29805, ChEBI:CHEBI:37565, ChEBI:CHEBI:141571;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxoethyl)-GDP = GDP + glycolate +
CC H(+); Xref=Rhea:RHEA:57264, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29805, ChEBI:CHEBI:58189, ChEBI:CHEBI:141574;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N(2)-(1-hydroxy-2-oxoethyl)-GMP = glycolate + GMP +
CC H(+); Xref=Rhea:RHEA:57304, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29805, ChEBI:CHEBI:58115, ChEBI:CHEBI:141576;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an N(2)-(1-hydroxy-2-oxopropyl)-guanosine in RNA + H2O = a
CC guanosine in RNA + H(+) + lactate; Xref=Rhea:RHEA:57288, Rhea:RHEA-
CC COMP:14855, Rhea:RHEA-COMP:14858, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:24996, ChEBI:CHEBI:74269,
CC ChEBI:CHEBI:141580; Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an N(2)-(1-hydroxy-2-oxopropyl)-2'-deoxyguanosine in DNA + H2O
CC = a 2'-deoxyguanosine in DNA + H(+) + lactate; Xref=Rhea:RHEA:57300,
CC Rhea:RHEA-COMP:11367, Rhea:RHEA-COMP:14856, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:24996, ChEBI:CHEBI:85445,
CC ChEBI:CHEBI:141578; Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an N(2)-(1-hydroxy-2-oxoethyl)-guanosine in RNA + H2O = a
CC guanosine in RNA + glycolate + H(+); Xref=Rhea:RHEA:57292, Rhea:RHEA-
CC COMP:14855, Rhea:RHEA-COMP:14859, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29805, ChEBI:CHEBI:74269,
CC ChEBI:CHEBI:141581; Evidence={ECO:0000255|HAMAP-Rule:MF_01046};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an N(2)-(1-hydroxy-2-oxoethyl)-2'-deoxyguanosine in DNA + H2O
CC = a 2'-deoxyguanosine in DNA + glycolate + H(+);
CC Xref=Rhea:RHEA:57296, Rhea:RHEA-COMP:11367, Rhea:RHEA-COMP:14857,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:29805,
CC ChEBI:CHEBI:85445, ChEBI:CHEBI:141579; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01046};
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01046}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01046}.
CC -!- INDUCTION: By heat shock. {ECO:0000255|HAMAP-Rule:MF_01046}.
CC -!- SIMILARITY: Belongs to the peptidase C56 family. HchA subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_01046}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AE014075; AAN80844.1; -; Genomic_DNA.
DR RefSeq; WP_000218217.1; NZ_CP051263.1.
DR AlphaFoldDB; P59331; -.
DR SMR; P59331; -.
DR STRING; 199310.c2385; -.
DR MEROPS; C56.006; -.
DR KEGG; ecc:c2385; -.
DR eggNOG; COG0693; Bacteria.
DR HOGENOM; CLU_066933_0_0_6; -.
DR BioCyc; ECOL199310:C2385-MONOMER; -.
DR Proteomes; UP000001410; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0036524; F:protein deglycase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0016790; F:thiolester hydrolase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006281; P:DNA repair; IEA:UniProtKB-UniRule.
DR GO; GO:0030091; P:protein repair; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.880; -; 1.
DR HAMAP; MF_01046; Deglycase_HchA; 1.
DR InterPro; IPR029062; Class_I_gatase-like.
DR InterPro; IPR017283; HchA.
DR PANTHER; PTHR48094:SF11; GLUTATHIONE-INDEPENDENT GLYOXALASE HSP31-RELATED; 1.
DR PANTHER; PTHR48094; PROTEIN/NUCLEIC ACID DEGLYCASE DJ-1-RELATED; 1.
DR PIRSF; PIRSF037798; Chaperone_HchA; 1.
DR SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 1.
PE 3: Inferred from homology;
KW Cytoplasm; DNA damage; DNA repair; Hydrolase; Metal-binding;
KW Reference proteome; Stress response; Zinc.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250"
FT CHAIN 2..283
FT /note="Protein/nucleic acid deglycase HchA"
FT /id="PRO_0000209414"
FT ACT_SITE 185
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01046"
FT BINDING 86
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01046"
FT BINDING 91
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01046"
FT BINDING 123
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01046"
SQ SEQUENCE 283 AA; 31236 MW; 5598412CA61821B2 CRC64;
MTVQTSKNPQ VDIAEDNAFF PSEYSLSQYT SPVSDLDGVD YPKPYRGKHK ILVIAADERY
LPTDNGKLFS TGNHPIETLL PLYHLHAAGF EFEVATISGL MTKFEYWAMP HKDEKVMPFF
EQHKSLFRNP KKLADVVASL NADSEYAAIF VPGGHGALIG LPESQDVAAA LQWAIKNDRF
VISLCHGPAA FLALRHSDNP LNGYSICAFP DAADKQTPDI GYMPGHLTWY FGEELKKMGM
NIINDDITGR VHKDRKLLTG DSPFAANALG KLAAQEMLAA YAS
//
