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News & Updates Python 3 New Python 3 compatibility guide for scripts and plugins Official Release PyMOL v2.3 has been released on February 11, 2019. POSF New PyMOL fellows announced for 2018-2019 Tutorial Plugins Tutorial updated for PyQt5 New Plugin ProBiS H2O is a new plugin for identification of conserved waters in protein structures. 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... Protect protect protects a set of atoms from tranformations performed using the editing features. This is most useful when you are modifying an internal portion of a chain or cycle and do not wish to affect the rest of the molecule. USAGE protect (selection) PYMOL API cmd.protect(string selection) Example This example makes a very cool little, and fake, molecular movie. Copy/paste this into PyMOL: <source lang="python"> load $PYMOL_PATH/test/dat/pept.pdb, obj create the fake trajectory (of states) for a in range(2,31): cmd.create("obj","obj",1,a) remove the bond unbond 5/C, 6/N This protects everything but all atoms witing 4 Ang. of residue 5's carbon and residue 6's nitrogen. protect not ((5/C or 6/N) extend 4) do some quick sculpting sculpt_activate obj, 30 sculpt_iterate obj, 30, 100 smooth obj, 30, 3 then program a bond-break/re-form movie mset 1 x30 1 -30 30 x30 30 -1 mdo 45: unbond 5/C, 6/N, quiet=1 mdo 100: bond 5/C, 6/N, quiet=1 frame 100 as sticks orient ..→

A Random PyMOL-generated Cover. See Covers.