NCIt definition : The Ubiquitin C-Terminal Hydrolases (UCH) are deubiquitinating enzymes which hydrolyze
carboxyl-terminal esters and amides of ubiquitin to generate free monomeric ubiquitin
from ubiquitin proproteins, but not to deubiquitinate ubiquitin-protein conjugates
or disassemble polyubiquitin chains. The expression of these enzymes is tissue-specific
and developmentally regulated. Members of this deubiquitinating family are also important
modulators of cellular function. (NCI);