N-terminal peptidyl-glutamine acetylation
n-terminal peptidyl-glutamine acetylation
The acetylation of a glutamine residue in protein to form the N5-methyl-L-glutamine derivative. The occurrence of this modification has not been confirmed. Its annotation in sequence databases is either due to the misidentification of 2-pyrrolidone-5-carboxylic acid, or to inappropriate homolog comparisons when proteolytic modification is more probable.