Folks The latest issue of the CCN is available on the website. Please consider contributing to future issues. The Computational Crystallography Newsletter (CCN) is an electronic newsletter for structural biologists, and is published online every 6 months. Feature articles, meeting announcements and reports can be submitted to me at any time for consideration. Submission of text by email or word-processing files using the CCN templates is requested. Past newsletters and a Microsoft Word template are available at www.phenix-online.org/newsletter. January 2021 http://phenix-online.org/newsletter/CCN_2021_01.pdf Articles - HKLviewer, a new 3D reflection data viewer for CCTBX http://phenix-online.org/newsletter/CCN_2021_01.pdf#page=15 - Running CCTBX and PyMOL in the same Jupyter Notebook http://phenix-online.org/newsletter/CCN_2021_01.pdf#page=26 Short Communications - PDB50: Celebrating 50 Years of the Protein Data Bank in 2021 http://phenix-online.org/newsletter/CCN_2021_01.pdf#page=5 - Lessons from using the Cambridge Structure Database: II – Element specification X/Z http://phenix-online.org/newsletter/CCN_2021_01.pdf#page=6 - The Importance of Being Positive: Charged ligands that bind nucleic acids http://phenix-online.org/newsletter/CCN_2021_01.pdf#page=9 Fitting tips #20 - In-plane or out-of-plane H atom placement on the edges of aromatic rings http://phenix-online.org/newsletter/CCN_2021_01.pdf#page=2 Cheers Nigel --- Nigel W. Moriarty Building 33R0349, Molecular Biophysics and Integrated Bioimaging Lawrence Berkeley National Laboratory Berkeley, CA 94720-8235 Phone : 510-486-5709 Email : [email protected] Fax : 510-486-5909 Web : CCI.LBL.gov ORCID : orcid.org/0000-0001-8857-9464