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News & Updates POSF New PyMOL fellows announced for 2018-2019 Tutorial Plugins Tutorial updated for PyQt5 Official Release PyMOL v2.2 has been released on July 24, 2018. 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... Centerofmass The centerofmass command calculates the center of mass for an atom selection. It considers atom mass and occupancy. New in PyMOL 1.7.2. See the center_of_mass script for older PyMOL versions. Usage centerofmass [ selection [, state ]] Arguments selection = str: atom selection {default: all} state = int: object state, -1 for current state, 0 for all states {default: -1} Example PyMOL> fetch 1ubq, async=0 PyMOL> centerofmass Center of Mass: [ 30.004, 28.522, 14.701] Python API cmd.centerofmass() returns a list of 3 floats. See Also get_extent center of mass (script) COM (script)

A Random PyMOL-generated Cover. See Covers.