Expasy logo

ENZYME

ENZYME entry: EC 6.3.2.62

Accepted Name
beta-tubulin-glutamate ligase
Alternative Name(s)
beta-tubulin polyglutamylase
Reaction catalysed
n ATP + [beta-tubulin]-L-glutamate + n L-glutamate = [beta-tubulin]-(gamma-(poly-alpha-L-glutamyl)-L-glutamyl)-L-glutamate + n ADP + n phosphate
Comment(s)
  • The eukaryotic tubulin proteins, which polymerize into microtubules, are highly modified by the addition of side-chains.
  • The polyglutamylation reaction catalyzed by this group of enzymes consists of two biochemically distinct steps: initiation and elongation.
  • Initiation comprises the formation of an isopeptide bond with the gamma-carboxyl group of the glutamate acceptor site, whereas elongation consists of the addition of glutamate residues linked by regular peptide bonds to the gamma-linked residue.
  • This entry describes enzymes that act on beta-tubulins and other proteins with glutamate-rich regions but not on alpha-tubulins.
Cross-references
BRENDA6.3.2.62
EC2PDB6.3.2.62
ExplorEnz6.3.2.62
KEGG Ligand Database for Enzyme Nomenclature6.3.2.62
IUBMB Enzyme Nomenclature6.3.2.62
MEDLINEFind literature relating to 6.3.2.62
MetaCyc6.3.2.62
Rhea expert-curated reactions6.3.2.62

View entry in original ENZYME format
View entry in raw text format (no links)
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 6.3.2.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 6.3.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 6.-.-.-