cmd.read_pdbstr("""\
""", "chainf")
cmd.hide("all")
cmd.color('grey70', "chainf")
cmd.show('ribbon', "chainf")
cmd.select("e4v4if1", "c. f & i. 73-154")
cmd.center("e4v4if1", state=0, origin=1)
cmd.zoom("e4v4if1", animate=-1)
cmd.show_as('cartoon', "e4v4if1")
cmd.spectrum('count', 'rainbow', "e4v4if1")
cmd.disable("e4v4if1")