preferred_name: N-terminal L-seryl-L-prolyl-L-lysyl-[protein] + S-adenosyl-L-methionine <=> N-terminal N-methyl-L-seryl-L-prolyl-L-lysyl-[protein] + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: n-terminal l-seryl-l-prolyl-l-lysyl-[protein] + s-adenosyl-l-methionine <=> n-terminal n-methyl-l-seryl-l-prolyl-l-lysyl-[protein] + s-adenosyl-l-homocysteine + h(+)
label: N-terminal L-seryl-L-prolyl-L-lysyl-[protein] + S-adenosyl-L-methionine <=> N-terminal N-methyl-L-seryl-L-prolyl-L-lysyl-[protein] + S-adenosyl-L-homocysteine + H(+)
label_lc: n-terminal l-seryl-l-prolyl-l-lysyl-[protein] + s-adenosyl-l-methionine <=> n-terminal n-methyl-l-seryl-l-prolyl-l-lysyl-[protein] + s-adenosyl-l-homocysteine + h(+)