This demo shows the structure of a four helix bundle, for use in crystallization
of membrane proteins, (peptitergent) as it appears in the following publication:
C.E. Schafmeister, L.J.W. Miercke, R.M. Stroud, Science 262, 734 (1993).
This demo can be run by typing midas -f (on a DEC Alpha: midas -fullscreen)
In Midas type: source demo.com
To see the density solidly rendered, type ribbonjr
All density map files and pdb files necessary are included in this directory.
For more information on displaying your electron density using MidasPlus,
see the manual pages on the "density" MidasPlus delegate.
The demo.com file contains the following: devopt smooth on open four.pdb
color cyan matrixset four.matrix delegate start density density 2fofc.Xmap
fofc.Xmap density size 20 density center #0:17A@N density display 2fofc
1 1.5 yellow density center #0:6A@N density display 2fofc 2 1.5 yellow density
display fofc 3 2.0 blue density display fofc 4 -2.0 red