![]() In the same context, PyMOL supports the possibility to mutate a protein residue or a nucleotide base with the ‘Mutagenesis Wizard’. The builder menu comes with complete hydrogen and charge fixing tools and with 3D-model cleaning strategies. For example, PyMOL handles molecular building and editing by providing a builder menu to draw small chemical compounds, peptides and nucleic-acids sequences. In addition to plugins, some useful tools are inherently implemented in PyMOL. As a consequence, sequence analysis, molecular docking, molecular dynamics, structure-function relationships analysis, protein structure prediction and virtual screening are all well-known structural bioinformatics approaches for which PyMOL plugins have been developed over the years. In this way, PyMOL is programmatically accessible through its editable command-line and Application Programming Interface (API), which make PyMOL features easily exploitable by external software. One of the main features of PyMOL is the ease for external developers to boost its functionality via scripts and plugins. Indeed, PyMOL is widely exploited by the scientific community for creating high-quality images and videos that accurately depict the molecular structure being presented. The use of efficient and high-performing graphical libraries, i.e., Open Graphics Library (OpenGL) and the GL Shading Language (GLSL), underlies the advanced images and light renderings of PyMOL, which in turn permits deep control over the setup of final image appearance. Such novelties made it possible for PyMOL to be continuously up to date, arriving at the latest available version 2.5, which was released in October 2021. PyMOL 2 packages and dependencies management are now on Anaconda, since version 2.3, PyMOL started to be developed and released in Python 3. ![]() acquisition released with PyMOL version 2 (PyMOL 2), feature a new Graphical User Interface (GUI) that makes use of PyQt5, and replaced Tcl/Tk. Currently, PyMOL is a cross-platform, open-source but proprietary software program, maintained, developed and supported by Schrödinger Inc., which also reserves licensing rights. (NY, USA), which continued to support the open-source vision of the original author, but also provided commercial support for maintenance and access to additional features. After the unexpected death of Warren DeLano in 2009, PyMOL was acquired by Schrödinger Inc. The first version of the PyMOL graphical environment for modeling and visualization of molecules, which dates back to 2000, was developed by Warren Lyford DeLano and was at first distributed by DeLano Scientific LLC. ![]()
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