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 P15374
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)

P15374
UCHL3_HUMAN
Homo sapiens
Ubiquitin carboxyl-terminal hydrolase isozyme L3

PDB Structure

PDB 1UCH
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of a deubiquitinating enzyme (human UCH-L3) at 1.8 A resolution.
Johnston, S.C., Larsen, C.N., Cook, W.J., Wilkinson, K.D., Hill, C.P.
EMBO J.