CATH Classification

Domain Context

CATH Clusters

Superfamily Peptidase C12, ubiquitin carboxyl-terminal hydrolase
Functional Family Ubiquitin carboxyl-terminal hydrolase

Enzyme Information

3.4.19.12
Ubiquitinyl hydrolase 1.
based on mapping to UniProt Q9Y5K5
Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).
-!- Links to polypeptides smaller than 60 residues are hydrolyzed more readily than those to larger polypeptides. -!- Isoforms exist with quantitatively different specificities among the best known being UCH-L1 and UCH-L3, major proteins of the brain of mammals. -!- Inhibited by ubiquitin aldehyde (in which Gly76 is replaced by aminoacetaldehyde). -!- Belongs to peptidase family C12.

UniProtKB Entries (1)

Q9Y5K5
UCHL5_HUMAN
Homo sapiens
Ubiquitin carboxyl-terminal hydrolase isozyme L5

PDB Structure

PDB 3TB3
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Length of the active-site crossover loop defines the substrate specificity of ubiquitin C-terminal hydrolases for ubiquitin chains.
Zhou, Z.R., Zhang, Y.H., Liu, S., Song, A.X., Hu, H.Y.
Biochem.J.
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