gyrA Gene product
《英文msh詞典》gyrA Gene product
[入口詞] gyrA Gene product
[主題詞] DNA Gyrase
[英文釋義] A bacterial DNA topoisomerase II that catalyzes ATP-dependent breakage of both strands of DNA,passage of the unbroken strands through the breaks,and rejoining of the broken strands. Gyrase binds to DNA as a heterotetramer consisting two A and two B subunits. In the presence of ATP,gyrase is able to convert relaxed circular DNA duplex into a superhelix. In the absence of ATP,supercoiled DNA is relaxed by DNA gyrase.