preferred_name: N-terminal N(alpha)-acetyl-L-alpha-aminoacyl-[protein] + CoA + H(+) => an N-terminal L-alpha-aminoacyl-[protein] + acetyl-CoA
preferred_name_lc: n-terminal n(alpha)-acetyl-l-alpha-aminoacyl-[protein] + coa + h(+) => an n-terminal l-alpha-aminoacyl-[protein] + acetyl-coa
label: N-terminal N(alpha)-acetyl-L-alpha-aminoacyl-[protein] + CoA + H(+) => an N-terminal L-alpha-aminoacyl-[protein] + acetyl-CoA
label_lc: n-terminal n(alpha)-acetyl-l-alpha-aminoacyl-[protein] + coa + h(+) => an n-terminal l-alpha-aminoacyl-[protein] + acetyl-coa