cmd.read_pdbstr("""\
""", "chainBK")
cmd.hide("all")
cmd.color('grey70', "chainBK")
cmd.show('ribbon', "chainBK")
cmd.select("e3j9wBK1", "c. K & i. 74-140")
cmd.center("e3j9wBK1", state=0, origin=1)
cmd.zoom("e3j9wBK1", animate=-1)
cmd.show_as('cartoon', "e3j9wBK1")
cmd.spectrum('count', 'rainbow', "e3j9wBK1")
cmd.disable("e3j9wBK1")