preferred_name: N-terminal L-alanyl-L-prolyl-L-lysyl-[protein] + 3 S-adenosyl-L-methionine = N-terminal N,N,N-trimethyl-L-alanyl-L-prolyl-L-lysyl-[protein] + 3 S-adenosyl-L-homocysteine + 3 H(+)
preferred_name_lc: n-terminal l-alanyl-l-prolyl-l-lysyl-[protein] + 3 s-adenosyl-l-methionine = n-terminal n,n,n-trimethyl-l-alanyl-l-prolyl-l-lysyl-[protein] + 3 s-adenosyl-l-homocysteine + 3 h(+)
label: N-terminal L-alanyl-L-prolyl-L-lysyl-[protein] + 3 S-adenosyl-L-methionine = N-terminal N,N,N-trimethyl-L-alanyl-L-prolyl-L-lysyl-[protein] + 3 S-adenosyl-L-homocysteine + 3 H(+)
label_lc: n-terminal l-alanyl-l-prolyl-l-lysyl-[protein] + 3 s-adenosyl-l-methionine = n-terminal n,n,n-trimethyl-l-alanyl-l-prolyl-l-lysyl-[protein] + 3 s-adenosyl-l-homocysteine + 3 h(+)