label: S-adenosyl-L-homocysteine(out) + S-adenosyl-L-methionine(in) <=> S-adenosyl-L-homocysteine(in) + S-adenosyl-L-methionine(out)
label_lc: s-adenosyl-l-homocysteine(out) + s-adenosyl-l-methionine(in) <=> s-adenosyl-l-homocysteine(in) + s-adenosyl-l-methionine(out)