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Visualization, Python


PyMOL is a Python-enhanced molecular graphics tool. It excels at 3D visualization of proteins, small molecules, density, surfaces, and trajectories. It also includes molecular editing, ray tracing, and movies.

Available versions

Legacy versions Supported versions New versions
1.7.4, 1.8.4

Environment modules

Version Module load command Additional modules loaded automatically
1.7.4 module load gcc/4.8.2 python/2.7.6 pymol/1.7.4 openblas/0.2.13_seq
1.8.4 module load gcc/4.8.2 python/2.7.6 pymol/1.8.4 openblas/0.2.13_seq

Interactive session

In order to start an interactive PyMOL session on one of the login nodes, you need to login to the Euler cluster with X11 forwarding enabled. Afterwards you can load the required modules and start PyMOL with the command pymol.
PyMOL GUI, please click on the picture to see a larger version


As an example for using PyMOL, we will render a cartoon image of a protein (1bl8). If you would like to repeat the example, then please start an interactive PyMOL session on a login node and type the following sequence of commands in PyMOL
fetch 1bl8
show cartoon
hide lines, all
set depth_cue, 0
set spec_reflect, 0
set bg_rgb=[1,1,1]
set orthoscopic, on
set cartoon_fancy_helices, 1
set cartoon_smooth_loops, 1
set cartoon_highlight_color, 1
set ray_shadows, 0
set ray_texture, 1

This is, what the result should then look like:

PyMOL example for rendering a protein. Please click on the picture to see a larger version

License information

BSD-style license