Gyrase (a form of topoisomerase) relaxes and undoes the supercoiling caused by helicase. It does this by cutting the DNA strands, allowing it to rotate and release the supercoil, and then rejoining the strands. Gyrase is most commonly found upstream of the replication fork, where the supercoils form.
TLCâs âI Am Jazzâ to premiere on July 15 The U.S. cable network has set a July 15 air date for I Am Jazz (pictured), a reality show starring transgender teen activist and YouTube personality Jazz Jennings and her family. Radarscreen Events
Jazz is an American music style which originated around the beginning of the 20th century in African American communities in the south from a mix of African and European music traditions. The word jazz began as a West Coast slang term of uncertain derivation and was first used to refer to music in Chicago in about 1915.