Demo Images


Included here are image files and descriptions on how to create them. Some of the tools mentioned are found only on an SGI machine, but there may be equivalent tools on other machines. These tools include:

blend
assemble
izoom
paste
snapshot

Most Unix machines with manual pages may give you information you need if you ask for a

man -k image",

and see what image tools are available.The images here are in TIFF format and are the files that end in ".tiff". For each ".tiff" file, there is a corresponding ".readme" file that describes the scientific model system and the procedure for creating the image file. TIFF files can be viewed on SGIs with

imgview

on DEC Alphas with

xv

(provided with the MidasPlus DEC distribution in /usr/local/midas/bin); and on NeXTs simply by double clicking on the ".tiff" file.
On DEC Alphas, the images frequently look better if the gamma correction factor for the 'xv' viewing program is changed to 1.7. This can be accomplished by using the right mouse button (in 'xv') to bring up the "controls" panel. Pick the "ColEdit"button to bring up the Color Editor panel. In the "Intensity" field, click the "Gam" button and type in a value of 1.7.

The images:

bilayer

Model system:
Model of colicin Ia in its membrane-associated state, prior to insertion into the bilayer.

Emphasized image creation method:
Using articial PDB files for special effects.

cartoon

Model system:
The structure of Bacteriorhodopsin.

Emphasized image creation method:
Using (now obsolescent) Ribbon program, and Ilabel

conic_and_neon

Model system
Homeodomain protein segment bound to DNA

Emphasized image creation method
Mixing Neon "stick" representation with Conic "sphere" representation

crosseye_density

Model system:
Custom designed peptide that forms a 4 helix bundle

Emphasized image creation method:
Creating stereo views

custom_colors

Model system:
Slip-Loop DNA model

Emphasized image creation method:
Specifying custom colors for use in images

density_and_helices

Model system:
Bacteriorhodopsin and microscopic and xray density

Emphasized image creation method:
Using Density delegate to show electron density contours

depth_cue:

Model system:
Rat Trypsin versus Bovine Trypsin

Emphasized image creation method:
Using depthcuing in Neon

label3d

Model system:
Thymidylate Synthase-DHFR complex

Emphasized image creation method:
Making stereo image with stereo labels

paint

Model system
Alpha Lytic Protease and two potential substrates

Emphasized image creation method:
Using paint programs (if available) for special effects

ribbonjr

Model system:
Slip-Loop DNA model

Emphasized image creation method:
Using various Ribbonjr options

sliced_conic

Model system:
Acetylcholine Receptor

Emphasized image creation method:
Cutting through Conic images to show interiors

transparency1

Model system:
DIP-inhibited Trypsin, space filling and stick models

Emphasized image creation method:
Creating "semi-transparent" images

transparency2

Model system:
HIV-1 Protease substrate comparison

Emphasized image creation method:
Additional "semi-transparent" image techniques

two_views_ipaste

Model system:
E.coli Bacteriorhodopsin and density

Emphasized image creation method:
Collating multiple images

walleye_density

Model system:
As for "crosseye_density" image

Emphasized image creation method:
Creating stereo view