cmd.read_pdbstr("""\
""", "chainB4")
cmd.hide("all")
cmd.color('grey70', "chainB4")
cmd.show('ribbon', "chainB4")
cmd.select("e4v68B41", "c. 4 & i. 1-50")
cmd.center("e4v68B41", state=0, origin=1)
cmd.zoom("e4v68B41", animate=-1)
cmd.show_as('cartoon', "e4v68B41")
cmd.spectrum('count', 'rainbow', "e4v68B41")
cmd.disable("e4v68B41")