Ticket #739: struts.cxc

# PDB 5ego (HOXB13-MEIS1 heterodimer bound to methylated DNA)
#  protein shown as ribbons, DNA shown as molecular surface; braced for 3D print 
#  with pseudobonds, some defined manually, more added with the struts command
open 5ego
hide atoms
show @ca
show nucleic
cartoon protein
car style sides 24
~cartoon nucleic
color /a 90,90,30
color /b salmon
surf nucleic enclose nucleic probe 1.1
color nucleic light sea green
# open pbond file: protein-nucleic pseudobonds based on H-bonds, but edited to 
# go to CA instead of sidechain atoms and pruned to 1 pbond per residue pair
open 5ego.pb
style dashes 0
color blue targ p
# supplement with calculated struts
struts @ca,p color silver
light gentle
set bg white
windowsize 800 600