# "Zoom in" button
# highlight Q33-Q44-T23-A24 interaction in the half site
# Gln33 is part of the first HTH helix, Q44 part of the
# official recognition helix.  This is taken from figure 6
# of the paper.
#
restrict halfall
select halfall
spacefill off
reset
rotate y 220
rotate x 40
rotate z 105
rotate x -20
zoom 140
translate y 26
#set shadows on
set specular on
select protein
hbonds off  
select dna and halfall
cartoons off
backbone 50
wireframe 100
color cpk
select major_groove and halfall
color brown
select minor_groove and halfall
color blue
set echo bottom
echo DNA: major groove brown, minor groove blue
select (30-55 and :4)
backbone 100
center (atomno=287)
#color purple
select (:4 and (gln44 or gln33))
color mediumorchid
wireframe 150
select (T23 or A24)
wireframe 150
color mediumorchid
select (HOH17 or HOH90)
color mediumorchid
spacefill
zoom 200
set echo top
echo The next button zooms in on the interaction in orchid
color echo orchid