For EF-Hand:

select all
color cpk
color backbone black
select hetero
dots 50
#$ Begin loop here
restrict model=@
backbone
select (74,76,78,80,85) and model=@
wireframe 0.2
select model=@ and (asp74.od1,asn76.od1,asp78.o,asp78.od2,thr80.o,glu85.oe?)
spacefill 0.45
select model=@ and hetero
spacefill

  For Serotonin N-Acetyltransferase:

#--Begin color scheme--
show selected false
select all
color red #to clear previous palette
select all
color cpk
set hetero off
select not (hetero,56,57,64,65)
color group #N-C Rainbow
#select 56,57,64,65
#center selected
  #--End color scheme--
#$ Begin animation loop
  #--Begin display script--
  #Main display.
select model=@
backbone 0
select model=@ and 32-76
backbone 0.1
select model=@ and ligand
spacefill
select model=@ and (56,57,64,65)
wireframe 0.2
  #--End display script--