Hi Peter he is an abstract for my talk. Thanks! -Tom T Phenix Wizards -- Automation of the Structure Determination Process The PHENIX Wizards allow automation of major steps in the structure determination process. The Wizards carry out decision-making, provide suggestions for the user, and form a flexible environment for investigating alternative strategies for structure determination. New algorithms available in PHENIX include a Iterative-build OMIT procedure for prevention of model bias and ligand identification in electron density maps. The PHENIX AutoBuild Wizard can carry out iterative model-building, density modification and refinement to improve the quality of models at resolutions as low as 3 Å. Electron density maps calculated using an atomic model can be affected by “model bias” introduced during refinement of the model. We have developed a “Iterative-build OMIT” procedure that prevents model bias in iterative procedures for model-building and refinement while producing a high-quality electron-density map. The PHENIX LigandFit automated ligand-fitting Wizard can fit flexible ligands into an electron density map. The Wizard can identify unknown ligands by comparing a set of potential ligands to the map and finding the one that fits the density most closely. Thomas C. Terwilliger Mail Stop M888 Los Alamos National Laboratory Los Alamos, NM 87545 Tel: 505-667-0072 email: [email protected] Fax: 505-665-3024 SOLVE web site: http://solve.lanl.gov PHENIX web site: http:www.phenix-online.org ISFI Integrated Center for Structure and Function Innovation web site: http://techcenter.mbi.ucla.edu TB Structural Genomics Consortium web site: http://www.doe-mbi.ucla.edu/TB