restrict none
center protein
background white
select protein
hbonds off
zoom 100
echo It is only beginning
refresh
pause
select protein
color grey
ribbons
select 53-71
color blue
echo Enjoy the alpha-helix
refresh
pause
restrict 53-71
zoom 300
center 53-71
echo Enjoy the alpha-helix once more
refresh
pause
select 53-71
ribbons off
select 53-71 and backbone
wireframe 50
color cpk
hbonds on
select 53-71 and *.CA
label ----------------%r
echo Wireframe helix
refresh 
pause
select 53-71 and backbone
wireframe 30
select 53-71 and *.CB
spacefill 100
color red
select 53-71 and (*.CB or *.CA)
wireframe 15
echo Alpha backbone and sidechain first atoms
refresh
pause
restrict none
select protein
hbonds off
echo That is all
refresh