N-terminal L-glutamyl-L-glutamyl-L-glutamyl-[protein] + acetyl-CoA => N-terminal N-acetyl-L-glutamyl-L-glutamyl-L-glutamyl-[protein] + CoA + H(+)
n-terminal l-glutamyl-l-glutamyl-l-glutamyl-[protein] + acetyl-coa => n-terminal n-acetyl-l-glutamyl-l-glutamyl-l-glutamyl-[protein] + coa + h(+)
N-terminal L-glutamyl-L-glutamyl-L-glutamyl-[protein] + acetyl-CoA => N-terminal N-acetyl-L-glutamyl-L-glutamyl-L-glutamyl-[protein] + CoA + H(+)
n-terminal l-glutamyl-l-glutamyl-l-glutamyl-[protein] + acetyl-coa => n-terminal n-acetyl-l-glutamyl-l-glutamyl-l-glutamyl-[protein] + coa + h(+)