December 2024 - phenixbb - phenix-online.org

PostDoc position in time resolved serial crystallography at ESRF ID29 beamline
by Daniele de Sanctis 06 Jun '26

06 Jun '26

Dear all, We have an exciting opportunity for a Post Doc position at the new ID29 serial crystallography beamline at the ESRF. Cheers Daniele The ID29 beamline is the first serial crystallography beamline for room temperature, time-resolved studies at a high energy 4th generation synchrotron. It delivers an unmatched flux density, enabling diffraction data collection from micro-sized samples in a few microseconds, allowing exploration of structural changes at room temperature. The beamline features state-of-the-art equipment, with fast goniometer for fixed target and liquid sample delivery, a high dynamic range integrating detector and laser probes. A dedicated sample preparation laboratory supports crystal delivery systems like injectors, fixed targets and microfluidic devices. You will focus on developing novel environments for crystal handling and delivery systems for serial crystallography experiments, as well as novel data collection methods and applying them to study time-resolved enzymatic reactions in crystals. You will also participate in beamline operations, support external users as the local contact, and have the opportunity to develop your own research and collaborations. Further information please contact Daniele de Sanctis (tel.: +33 (0)4 76 88 28 69, email: daniele.de_sanctis(a)esrf.fr <XXX(a)esrf.fr>). Applications should be submitted through the ESRF portal https://esrf.gestmax.eu/1816/1/post-doc-on-id29/en_US Expected profile - PhD in chemistry, physics, biophysics, biology or closely related science obtained less than 3 years ago - A strong background in X-ray crystallography and serial crystallography is desirable - A strong interest in new method development - Ability to interact with multi-disciplinary staff and facility users - English proficiency (working language at the ESRF) Working conditions The salary will be calculated on the basis of relevant qualifications and professional experience. Do you recognize yourself in this description? Apply now for your next professional adventure! What we offer: 1. *Join* an innovative international research institute, with a workforce from 38 different countries 2. *Collaborate* with global experts to advance science and address societal challenges 3. Come and live in a *vibrant city*, in the heart of the Alps, and Europe's Green Capital 2022 4. *Enjoy* a workplace designed to support your *quality of life* 5. Benefit from our* competitive compensation* and *allowances* *package*, including *financial support for your relocation to Grenoble* For further information on employment terms and conditions, please refer to https://www.esrf.fr/home/Jobs/what-we-offer.html The ESRF is an equal opportunity employer and encourages applications from disabled persons.

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Polder map
by jirivitali＠gmail.com 06 Jun '26

06 Jun '26

Dear Phenix user I wanted to create Polder map. I just used single atom or residues and it works fine. There is also a option for the compute box but I am more interested to create map by selecting more than one resides but without using the compute box. Is it possible? and what will be the syntax for this. best J. Vitali

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Phenix error in real space refinement with ligand
by Yung-Chieh Chen 06 Jun '26

06 Jun '26

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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cryo em map
by iram aziz 06 Jun '26

06 Jun '26

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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Handling of modified nucleotides in ribosome structures
by christian.steinmetzger＠imbim.uu.se 06 Jun '26

06 Jun '26

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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Research Specialist Position at the University of Illinois to Study Ribosome Structure | POLIKANOV Lab
by Yury Polikanov 06 Jun '26

06 Jun '26

*Research Specialist Position Available, Department of Biological Sciences, University of Illinois at Chicago - Polikanov Lab* *The Polikanov Laboratory in the Department of Biological Sciences at the University of Illinois at Chicago (IL, USA) is looking for a talented, skillful, and highly motivated researcher to fill the Research Specialist position to study the structure and function of the bacterial ribosome.* For fullest consideration, please submit an application and cover letter describing your scientific interests and how your previous research accomplishments and scientific interests fit with the scope of the research in the Polikanov research group at https://uic.csod.com/ux/ats/careersite/1/home/requisition/7573?c=uic *Position Summary:* The research in the Polikanov Laboratory at UIC is focused on understanding the basic principles of protein synthesis in bacteria, the modes of action of ribosome-targeting antibiotics, and the mechanisms of drug resistance at a structural level. This position is involved in the determination of high-resolution structures of ribosome functional complexes with various protein translation factors, tRNAs, and antibiotics using macromolecular X-ray crystallography and potentially cryo-EM techniques. Expected contributes to the design and delivery of research projects and collaborates with researchers to develop, execute, and interpret research projects. Performs complex laboratory and data collection techniques. *Duties & Responsibilities:* - Perform research relevant to the assigned projects; - Isolate, purify, and crystallize bacterial ribosomes; - Purify all additional components necessary for the crystallization experiments, such as recombinant proteins, tRNAs; - Collect X-ray diffraction data from the ribosome crystals at the APS and NSLS-II Synchrotrons; - Perform structural data analysis; - Coordinate, analyze, and document results for publication; - Directly participate in writing papers and grants based on the experimental data; - Train undergraduate and graduate students in research methods, use of equipment, record keeping, and laboratory database entry; - Attend weekly group meetings and journal club seminars. - Perform other related duties and participate in special projects as assigned. *Minimum Qualifications:* - A bachelor’s degree in chemistry, biochemistry, biophysics, or a related field is required. - A master’s degree in chemistry, biochemistry, biophysics, or a related field is preferred. - A minimum of 3 years related research experience. - Possesses and applies comprehensive knowledge of research principles, concepts, practices, and methods. - Proficient in standard molecular biology and biochemistry lab techniques, such as protein expression, and purification *Preferred Qualifications:* - Experience in structural biology (cryo-EM or X-ray crystallography); - Experience in RNA biology, ribosome, and/or protein synthesis fields. *About the University of Illinois Chicago:* UIC is among the nation’s preeminent urban public research universities, a Carnegie RU/VH research institution, and the largest university in Chicago. UIC serves over 34,000 students, comprising one of the most diverse student bodies in the nation and is designated as a Minority Serving Institution (MSI), an Asian American and Native American Pacific Islander Serving Institution (AANAPSI) and a Hispanic Serving Institution (HSI). Through its 16 colleges, UIC produces nationally and internationally recognized multidisciplinary academic programs in concert with civic, corporate and community partners worldwide, including a full complement of health sciences colleges. By emphasizing cutting-edge and transformational research along with a commitment to the success of all students, UIC embodies the dynamic, vibrant and engaged urban university. Recent “Best Colleges” rankings published by U.S. News & World Report, found UIC climbed up in its rankings among top public schools in the nation and among all national universities. UIC has nearly 260,000 alumni, and is one of the largest employers in the city of Chicago. *The University of Illinois System is an equal opportunity employer, including but not limited to disability and/or veteran status, and complies with all applicable state and federal employment mandates. Please visit Required Employment Notices and Posters <https://www.hr.uillinois.edu/cms/one.aspx?portalId=4292&pageId=5705> to view our non-discrimination statement and find additional information about required background checks, sexual harassment/misconduct disclosures, COVID-19 vaccination requirement, and employment eligibility review through E-Verify. **The university provides accommodations to applicants and employees. Request an Accommodation <https://jobs.uic.edu/request-and-accomodation/>*

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RapiData at SSRL 2024
by Smith, Clyde 22 Jan '26

22 Jan '26

Hi everyone, Applications are now open for the 2024 edition of RapiData at SSRL. RapiData is a practical course in macromolecular X-ray diffraction data collection, data processing and structure solution. The aim of the RapiData course is to educate and train young scientists in data collection and processing methods at synchrotron beamlines, using state-of-the-art software and instrumentation. The course will be held at the Stanford Synchrotron Radiation Lightsource (SSRL) located on the SLAC National Accelerator Laboratory campus in Menlo Park, CA, from April 29 to May 4, 2024. The course will comprise hands-on experiments at the SSRL beamlines, software tutorials, and lectures on the following topics: Specimen preparation, Data collection strategies, X-ray light sources, X-ray detectors, Data reduction, Structure solution by MAD, SAD and Molecular Replacement, Complementary methods (spectroscopy and small angle scattering) Please visit http://smb.slac.stanford.edu/news/rapidata/rapidata-2024/ and use the links on the "Application and Registration" page to apply for the course. The application deadline is January 31, 2024. Successful applicants will be notified early in February 2024 and invited to register and book accommodation at SLAC Stanford Guesthouse at that time. A limited amount of support funding may be available. Please direct questions to Silvia Russi (srussi(a)slac.stanford.edu) or Clyde Smith (csmith(a)slac.stanford.edu).

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Phenix Postdoc Position - Berkeley, California
by Paul Adams 24 Jan '25

24 Jan '25

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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PostDoc and Associate Researcher positions in structural biology field at ISMMS in NYC
by Wang, Wei 13 Dec '24

13 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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