python 
for x in range(3,101):
	cmd.edit("/ala///" + str(x-1) + "/C")
	editor.attach_amino_acid("pk1","ala")
for x in range(2,99):
	cmd.set_dihedral(
		"/ala///" + str(x) + "/N",
		"/ala///" + str(x) + "/CA",
		"/ala///" + str(x) + "/C",
		"/ala///" + str(x+1) + "/N",
		-47)
	cmd.set_dihedral(
		"/ala///" + str(x) + "/CA",
		"/ala///" + str(x) + "/C",
		"/ala///" + str(x+1) + "/N",
		"/ala///" + str(x+1) + "/CA",
		180)
	cmd.set_dihedral(
		"/ala///" + str(x) + "/C",
		"/ala///" + str(x+1) + "/N",
		"/ala///" + str(x+1) + "/CA",
		"/ala///" + str(x+1) + "/C",
		-57)
python end