FAD <=> riboflavin cyclic-4',5'-phosphate + AMP + H(+)
fad <=> riboflavin cyclic-4',5'-phosphate + amp + h(+)
FAD <=> riboflavin cyclic-4',5'-phosphate + AMP + H(+)
fad <=> riboflavin cyclic-4',5'-phosphate + amp + h(+)