Q6GBT6 · HCHA_STAAS

Function

function

Protein and nucleotide deglycase that catalyzes the deglycation of the Maillard adducts formed between amino groups of proteins or nucleotides and reactive carbonyl groups of glyoxals. Thus, functions as a protein deglycase that repairs methylglyoxal- and glyoxal-glycated proteins, and releases repaired proteins and lactate or glycolate, respectively. Deglycates cysteine, arginine and lysine residues in proteins, and thus reactivates these proteins by reversing glycation by glyoxals. Acts on early glycation intermediates (hemithioacetals and aminocarbinols), preventing the formation of Schiff bases and advanced glycation endproducts (AGE). Also functions as a nucleotide deglycase able to repair glycated guanine in the free nucleotide pool (GTP, GDP, GMP, dGTP) and in DNA and RNA. Is thus involved in a major nucleotide repair system named guanine glycation repair (GG repair), dedicated to reversing methylglyoxal and glyoxal damage via nucleotide sanitization and direct nucleic acid repair. Plays an important role in protecting cells from carbonyl stress.

Catalytic activity

Features

Showing features for active site.

TypeIDPosition(s)Description
Active site190Nucleophile

GO annotations

AspectTerm
Cellular Componentcytoplasm
Molecular Functionprotein deglycase activity
Molecular Functionthiolester hydrolase activity
Biological ProcessDNA repair
Biological Processprotein repair

Keywords

Enzyme and pathway databases

Protein family/group databases

Names & Taxonomy

Protein names

  • Recommended name
    Protein/nucleic acid deglycase HchA
  • EC number
  • Alternative names
    • Maillard deglycase

Gene names

    • Name
      hchA
    • Ordered locus names
      SAS0509

Organism names

Accessions

  • Primary accession
    Q6GBT6

Subcellular Location

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_00002094191-292Protein/nucleic acid deglycase HchA

Structure

Family & Domains

Features

Showing features for region.

TypeIDPosition(s)Description
Region1-23Disordered

Sequence similarities

Belongs to the peptidase C56 family. HchA subfamily.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    292
  • Mass (Da)
    32,181
  • Last updated
    2004-07-19 v1
  • Checksum
    CA9E227128741960
MSQDVNELSKQPTPDKAEDNAFFPSPYSLSQYTAPKTDFDGVEHKGAYKDGKWKVLMIAAEERYVLLENGKMFSTGNHPVEMLLPLHHLMEAGFDVDVATLSGYPVKLELWAMPTEDEAVISTYNKLKEKLKQPKKLADVIKNELGPDSDYLSVFIPGGHAAVVGISESEDVQQTLDWALDNDRFIVTLCHGPAALLSAGLNREKSTLEGYSVCVFPDSLDEGANIEIGYLPGRLKWLVADLLTKQGLKVVNDDMTGRTLKDRKLLTGDSPLASNELGKLAVNEMLNAIQNK

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
BX571857
EMBL· GenBank· DDBJ
CAG42284.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
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