# Domains of the repressor
restrict not water
select protein
color cpk
cartoons on
# Basic image
wireframe off
#
# Identify first helix of HTH motif in cyan
#
select (resno>32 and resno<40 and protein)
wireframe 75
color cyan                                 
#
# Identify turn of HTH motif in blue
#
select (resno>39 and resno<44 and protein)
wireframe 75
color blue
set echo top left
echo HTH: Recog-turn-packing-N term arm-dimerization = purple-blue-cyan-orange-green
#
# Identify recognition helix of HTH motif in purple
#
select (resno>43 and resno<52 and protein)
wireframe 75
color purple
#
# Identify N-terminal arm in orange
#
select (resno<8 and protein)
wireframe 75
color orange
#
# Identify dimerization helix in green
#
select (resno>78 and protein)
wireframe 75
color green
#
# identify DNA grooves
#
select DNA
color cpk
select major_groove
color brown
select minor_groove
color blue
wireframe 150
backbone 200
color backbone pink
#
set echo bottom
echo DNA: major groove brown, minor groove blue
# Now spin around etc. as you please
#