> 1gku_B_str_5 (B: 504-678) REVERSE GYRASE IKPALFIVESPTKARQISRFFGKPSVKVLDGAVVYEIPMQKYVLMVTASIGHVVDLITNR GFHGVLVNGRFVPVYASIKDNSRSRIEALRKLAHDAEFVIVGTDPDTEGEKIAWDLKNLL SGCGAVKRAEFHEVTRRAILEALESLRDVDE