Protein NH2-terminal asparagine amidohydrolase ; PNAA ; Protein NH2-terminal asparagine deamidase ; PNAD
Categories
Elisa
Function
Side-chain deamidation of N-terminal asparagine residues to aspartate. Required for the ubiquitin-dependent turnover of intracellular proteins that initiate with Met-Asn. These proteins are acetylated on the retained initiator methionine and can subsequently be modified by the removal of N-acetyl methionine by acylaminoacid hydrolase (AAH). Conversion of the resulting N-terminal asparagine to aspartate by PNAD renders the protein susceptible to arginylation, polyubiquitination and degradation as specified by the N-end rule. This enzyme does not act on substrates with internal or C-terminal asparagines and does not act on glutamine residues in any position.
Specificity
Natural and recombinant Mouse Protein N-terminal asparagine amidohydrolase