cmd.read_pdbstr("""\
""", "chainSR")
cmd.hide("all")
cmd.color('grey70', "chainSR")
cmd.show('ribbon', "chainSR")
cmd.select("e7nrdSR3", "c. R & i. 176-250")
cmd.center("e7nrdSR3", state=0, origin=1)
cmd.zoom("e7nrdSR3", animate=-1)
cmd.show_as('cartoon', "e7nrdSR3")
cmd.spectrum('count', 'rainbow', "e7nrdSR3")
cmd.disable("e7nrdSR3")