preferred_name: [PQQ precursor protein] + S-adenosyl-L-methionine <=> E-Y cross-linked-[PQQ precursor protein] + 5'-deoxyadenosine + L-methionine + H(+)
preferred_name_lc: [pqq precursor protein] + s-adenosyl-l-methionine <=> e-y cross-linked-[pqq precursor protein] + 5'-deoxyadenosine + l-methionine + h(+)
label: [PQQ precursor protein] + S-adenosyl-L-methionine <=> E-Y cross-linked-[PQQ precursor protein] + 5'-deoxyadenosine + L-methionine + H(+)
label_lc: [pqq precursor protein] + s-adenosyl-l-methionine <=> e-y cross-linked-[pqq precursor protein] + 5'-deoxyadenosine + l-methionine + h(+)