hygromycin B + ATP <=> 4-O-phosphohygromycin B + ADP + H(+)
hygromycin b + atp <=> 4-o-phosphohygromycin b + adp + h(+)
hygromycin B + ATP <=> 4-O-phosphohygromycin B + ADP + H(+)
hygromycin b + atp <=> 4-o-phosphohygromycin b + adp + h(+)