Received 26 July 2019 Accepted 15 August 2019 | Dorothee Liebschner, Pavel V. Afonine, Matthew L. Baker, Gábor Bunkócz, Vincent B. Chen, Tristan I. Croll, Bradley Hintze, Li-Wei Hung, Swati Jain, Airlie J. McCoy, Nigel W. Moriarty, Robert D. Oefner, Billy K. Poon, Michael G. Prisant, Randy J. Read, Jane S. Richardson, David C. Richardson, Massimo D. Sammito, Oleg V. Sobolev, Duncan H. Stockwell, Thomas C. Terwilliger, Alexandre G. Urzhumtsev, Lizbeth L. Viedau, Christopher J. Williams and Paul D. Adams
The article provides an overview of the recent developments in *Phenix*, a comprehensive software package for determining macromolecular structures using X-ray, neutron, and electron diffraction, as well as electron cryo-microscopy (cryo-EM). The workflow for structure determination is similar across these techniques, but each method has unique properties that require tailored tools. *Phenix* emphasizes automation to minimize repetitive tasks and provides a user-friendly interface. The article covers the steps in the structure-solution process, including data-quality assessment, map optimization, model building, and refinement. It also discusses the validation of models to ensure their quality and accuracy. Recent additions to *Phenix* include tools for cryo-EM map optimization, automated model building, and ensemble refinement. The software is designed to handle various experimental data types and offers a range of tools for different stages of the structure-determination process.The article provides an overview of the recent developments in *Phenix*, a comprehensive software package for determining macromolecular structures using X-ray, neutron, and electron diffraction, as well as electron cryo-microscopy (cryo-EM). The workflow for structure determination is similar across these techniques, but each method has unique properties that require tailored tools. *Phenix* emphasizes automation to minimize repetitive tasks and provides a user-friendly interface. The article covers the steps in the structure-solution process, including data-quality assessment, map optimization, model building, and refinement. It also discusses the validation of models to ensure their quality and accuracy. Recent additions to *Phenix* include tools for cryo-EM map optimization, automated model building, and ensemble refinement. The software is designed to handle various experimental data types and offers a range of tools for different stages of the structure-determination process.