demethylspheroidene + S-adenosyl-L-methionine = spheroidene + S-adenosyl-L-homocysteine + H(+)
demethylspheroidene + s-adenosyl-l-methionine = spheroidene + s-adenosyl-l-homocysteine + h(+)
"1-hydroxycarotenoid O-methylase"
"1-hydroxycarotenoid o-methylase"