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The community-run support site for the PyMOL molecular viewer.
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Quick Links
Tutorials Table of Contents Commands
Script Library Plugins FAQ
Gallery | Covers PyMOL Cheat Sheet (PDF) Getting Help
News & Updates
New Setup PyMOL-open-source-windows-setup v3.1 has been released on January 20, 2025. More information under Windows Install.
New Plugin PySSA aims to combine PyMOL and ColabFold to enable the prediction and analysis of 3D protein structures for the scientific end-user. v1.0 has been released on July 10, 2024.
Official Release PyMOL v3.0 has been released on March 12, 2024.
New Plugin CavitOmiX calculate Catalophore™ cavities, predict protein structures with OpenFold by NVIDIA-BioNeMo, ESMFold and retrieve Alphafold models
Official Release PyMOL v2.5 has been released on May 10, 2021.
Python 3 New Python 3 compatibility guide for scripts and plugins
POSF New PyMOL fellowship announced for 2022-2023
Tutorial Plugins Tutorial updated for PyQt5
New Plugin PICv is a new plugin for clustering protein-protein interactions and visualization with available data from PDBe
Selection keywords New polymer.protein and polymer.nucleic selection keywords. Thanks everyone who participated in the poll!
Plugin Update MOLE 2.5 is an updated version of channel analysis software in PyMOL
New Script dssr_block is a wrapper for DSSR (3dna) and creates block-shaped nucleic acid cartoons
Older News See Older News.
Did you know...
= Overview =

This controls how well PyMOL draws surfaces. Lower values, like 0, are rough surface approximations. These low values are good for speed--especially for larger surfaces. For rendering of publication quality photos, and truer representations of the biological surface, set the value higher--to something like 2, 3 or 4. In practice typical values are 1, 2 and 3.

This value, I believe, changes how finely the polygons are sampled for surface representation. Settings of 2 or 3 are far more computationally intensive to compute and show than are the default and low values. For example, using a value of 3 took my computer about 2 minutes just to prepare the surface for showing in the PyMOL GUI (this does not include any ray-tracing or rendering). Lastly, ray tracing surfaces with high quality settings takes much longer.

Syntax

<source lang="python">

  1. set ..→
A Random PyMOL-generated Cover. See Covers.