L-threonyl-[protein] + FAD <=> FMN-L-threonyl-[protein] + AMP + H(+)
l-threonyl-[protein] + fad <=> fmn-l-threonyl-[protein] + amp + h(+)
L-threonyl-[protein] + FAD <=> FMN-L-threonyl-[protein] + AMP + H(+)
l-threonyl-[protein] + fad <=> fmn-l-threonyl-[protein] + amp + h(+)