December 2024 - phenixbb - phenix-online.org

Phenix Postdoc Position - Berkeley, California
by Paul Adams 23 Dec '24

23 Dec '24

Dear Colleagues, The Phenix team is hiring! We are looking for talented postdoctoral candidates to join the group in Berkeley. Please see the details below, and feel free to pass on to anyone you think might be interested. To access the job posting directly: https://jobs.lbl.gov/jobs/computational-postdoctoral-fellow-6893 Cheers, Paul Berkeley Lab’s (LBNL) Molecular Biophysics and Integrated Bioimaging Division (MBIB) has an opening for a Postdoctoral Fellow to develop new computational methods for the structure determination and refinement of protein structures using the PHENIX software system. In this exciting role, you will work under the direction of the Deputy Director for this project with primary responsibilities including the development and implementation of numerical methods and new computational protocols, including the application of machine learning methods. The goals of the role include the development of automated pipelines for data analysis, structure completion and model validation. The Phenix software is used worldwide for the determination of atomic structures using X-ray and neutron crystallography and cryo-electron microscopy. The software is developed as part of an international collaboration supported by the National Institutes of Health and the Phenix Industrial Consortium. This will require the organization of results for presentation and viewing by project team members, the wider scientific community, and preparing results for publication in scientific journals. This position has an earliest start date of February 3, 2025. What You Will Do: Develop and implement computational algorithms for structure determination using crystallography and cryo-electron microscopy including: Improved methods for the optimization and completion of models Automated pipelines for data analysis, structure completion, and model validation Apply machine learning methods to problems in crystallography and cryo-electron microscopy. Develop and test new components of the PHENIX software system in collaboration with others. Document software developments. Collaborate with other researchers in the PHENIX program. Summarize research results, publish them in peer-reviewed journals, and contribute to scientific research papers and reports. Contribute to discussions on the determination of future directions. Attend group meetings or conferences/workshops, present status reports, and scientific findings as appropriate. Keep accurate and detailed research notes. What is Required: A recent Ph.D. (within the last 1-2 years) in Computational Crystallography, Computational Cryo-Electron Microscopy, Computational Biology, Bioinformatics, Computational Chemistry or a closely related field. Demonstrated experience in developing computational algorithms for solving problems. Demonstrated experience with computational methods development. Publications in macromolecular crystallography, cryo-electron microscopy or closely related fields. Good programming and mathematical skills, including familiarity with Python and other software development tools. Strong organizational skills including experience maintaining detailed and accurate records of experiment results and analyzed data. Excellent oral and written communication skills including experience organizing/presenting technical reports. Demonstrated interpersonal skills including experience conducting experiments independently and collaborating with a diverse interdisciplinary research team. Desired Qualifications: Experience with machine learning methods, programming with C++, or equivalent object-oriented programming languages. Experience with the practical aspects of crystallography and/or cryo-electron microscopy. Familiarity with macromolecular structure or computational chemistry. -- Paul Adams (he/him/his) Associate Laboratory Director for Biosciences, LBL (https://biosciences.lbl.gov) Principal Investigator, Computational Crystallography Initiative, LBL (http://cci.lbl.gov) Vice President for Technology, the Joint BioEnergy Institute (http://www.jbei.org) Principal Investigator, ALS-ENABLE, Advanced Light Source (http://als-enable.lbl.gov) Laboratory Research Manager, ENIGMA Science Focus Area (http://enigma.lbl.gov) Adjunct Professor, Department of Bioengineering, UC Berkeley (http://bioeng.berkeley.edu) Member of the Graduate Group in Comparative Biochemistry, UC Berkeley (http://compbiochem.berkeley.edu) Building 91, Room 410 Building 978, Room 4126 Tel: 1-510-486-4225 http://cci.lbl.gov/paul ORCID: 0000-0001-9333-8219 Lawrence Berkeley Laboratory 1 Cyclotron Road BLDG 91R0183 Berkeley, CA 94720, USA. Executive Assistant: Michael Espinosa [ MEEspinosa(a)lbl.gov ][ 1-510-333-6788 ] Phenix Consortium: Ashley Dawn [ AshleyDawn(a)lbl.gov ][ 1-510-486-5455 ] --

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Handling of modified nucleotides in ribosome structures
by christian.steinmetzger＠imbim.uu.se 19 Dec '24

19 Dec '24

Dear community, I'm trying to work with a published ribosome structure (PDB 7K00, https://www.rcsb.org/structure/7k00 ) for example in phenix.combine_focused_maps or phenix.real_space_refine. Of course this structure contains a lot of modified residues and the monomer library in a fresh Phenix installation (version 1.21.2-5419) does not handle these out of the box. Since a lot of publications have used 7K00 as a starting point for their work in Phenix and since the current CCP4 monomer library plays nice with this structure I would not have expected this. Am I missing something in my Phenix setup to make it recognize such "common" modified residues in a ribosome or do I indeed need to generate parameters myself using AceDRG, eLBOW, Grade2 etc.? In the latter case, could I simply swap out the stock Phenix monomer library for the one from CCP4 as a drop-in replacement or would that be a bad idea? Thank you! Christian

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cryo em map
by iram aziz 18 Dec '24

18 Dec '24

Hello All. I got a nice 2.45 Angstrom map from cryo em data. I checked handedness, map model fitting on the chimera and opened in the coot. It looks nice. Can you please give me suggestions about the Phenix refinement steps. Thanks Iram

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PostDoc and Associate Researcher positions in structural biology field at ISMMS in NYC
by Wang, Wei 14 Dec '24

14 Dec '24

Dear all, I'd like to draw your attention to the availability of postdoctoral and associate researcher positions in my newly started lab at Icahn School of Medicine at Mount Sinai in New York City. Our lab focuses on elucidating protein dynamics and functions under disease-related conditions, with a strong collaborative tie to the Mount Sinai Center for Transformative Disease Modeling. I hereby sincerely invite colleagues to join my lab for the mutual research interest. For more details on the available positions and the application process, please visit the following links: Postdoctoral candidate please visit: https://jobrxiv.org/job/icahn-school-of-medicine-at-mount-sinai-27778-postd… Associate Researcher candidate please visit: https://jobrxiv.org/job/icahn-school-of-medicine-at-mount-sinai-27778-assoc… Please don't hesitate to reach out if you have any questions. I would be glad to talk with you. Wei Wang, PhD Assistant Professor Department of Genetics and Genomic Sciences Department of Pharmacological Sciences Icahn School of Medicine at Mount Sinai e: wei.wang(a)mssm.edu<mailto:[email protected]>

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Re: Registration now open for CCP4 Study Weekend 2025 - Using software, AI and other methods to advance macromolecular models
by Karen McIntyre - STFC UKRI 05 Dec '24

05 Dec '24

Just a reminder that registration is open for the CCP4 Study Weekend taking place in January 2025. Early bird deadline is 11 November so if you want to save some money or are a student wanting a standard bursary register ASAP. Applications for Travel bursaries are now open but close at the end of the month so get your applications in now! Hope to see you there!! Scientific Organisers: Elke De Zitter (Institut de Biologie Structurale, FRANCE) Deborah Harrus (EMBL-EBI, UK) Dorothee Liebschner (Lawrence Berkeley National Laboratory, USA) Administrative Organisers: Karen McIntyre (CCP4, UK) From: McIntyre, Karen (STFC,RAL,SC) Sent: 26 September 2024 13:15 To: CCP4 WG2 <ccp4wg2(a)listserv.stfc.ac.uk>; CCP4 WG1 <ccp4wg1(a)listserv.stfc.ac.uk>; ccp4bb(a)jiscmail.ac.uk Subject: Registration now open for CCP4 Study Weekend 2025 - Using software, AI and other methods to advance macromolecular models Importance: High Dear all, Registration is now open for the 2025 CCP4 study weekend entitled " Using software, AI and other methods to advance macromolecular models". This year the CCP4 Study Weekend will be held as a hybrid event from the 7th to 9th January 2025, enabling people to choose whether to attend in-person or virtually. The in-person event will be held at the East Midlands Conference Centre, Nottingham, UK. We would like to invite you to another iteration of the ever-popular CCP4 Study Weekend - to start the year 2025 with a lot of fresh ideas, new insights and (hopefully) new friends and contacts to boost. As always it will be an eclectic mix of bleeding-edge science, in-depth presentations, discussion panel, poster-sessions, hands-on tutorials and plenty of opportunities for social interactions. For full details, programme, logistics and registration, please visit the Study Weekend website<https://studyweekend.ccp4.ac.uk/>. There is no better way to start 2025 than to put participation in that exciting meeting at the top of your "New Year's Resolutions" list! Key Dates: * Early bird registration final date: 11 November 2024; * Standard Student bursaries are open to all students registering during early bird period i.e. now until 11 November which cover the cost of registration plus one night accommodation in halls (1 night in hotel will be subsidised for those students choosing to stay in the hotel); * Travel bursaries are available for students and young postdocs studying at overseas labs to help cover cost of travel to UK. The deadline for applications is 31 October 2024; * Registration for in-person delegates closes 4 December 2023 (or earlier if in-person places sell out although you will be able to join the in-person waitlist). * Registration for virtual delegates will close 9 January 2025. Key Timings Diamond MX user meeting will start at 11:00 on 7TH January 2025 CCP4 study weekend 2025 will start at ~17:30 on 7th January 2025 the event will finish at ~16:30 on 9th January 2025 We hope to see you there! Scientific Organisers: Elke De Zitter (Institut de Biologie Structurale, FRANCE) Deborah Harrus (EMBL-EBI, UK) Dorothee Liebschner (Lawrence Berkeley National Laboratory, USA) Administrative Organisers: Karen McIntyre (CCP4, UK)

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Phenix error in real space refinement with ligand
by Yung-Chieh Chen 03 Dec '24

03 Dec '24

Dear all, I'm trying to refine my model bound with a ligand bearing a -SF5 moiety (-pentafluorosulfanyl). I have used openbabel/Grade web server or REEL to generate/edit the cif file for the ligand. I could obtain the desired octahedral geometry for the -SF5 group. However, both cases failed in real space refinement and I got the following error message: "Number of atoms with unknown nonbonded energy type symbols: 22337...". I would be very grateful if anyone can share experience about how to tackle this issue. Thanks in advance. Best wishes, Yung-Chieh Chen

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