Alpha helix

select *; cpk off; wireframe; select backbone; cpk 100%;
select *; cpk off; wireframe 0.3;
select *; restrict backbone; cpk off; wireframe 0.3;
select *; restrict backbone; cpk 100%;
select *; wireframe 0.3; select backbone; cpk 100%;
select *; cpk off; wireframe; select backbone; wireframe 0.3;
select *; cpk off; wireframe
trace 0.5; color trace orange;
trace off;
select alpha; label %a; color label white;
select alpha; label %n; color label white;
select *; label off;
color atoms cpk;
color atoms amino
backbone 0.3; color backbone yellowgreen;
backbone off;
Application loaded.