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A virus recognizes the starting point on the DNA to be packaged inside its protein shell

The Cingolani group (Thomas Jefferson U) has now determined the structure of TerS from the Pseudomonas phage PaP3. Phage DNA to be packaged contains multiple copies of the genome, but just one copy is needed to fill a procapsid. Terminases attempt to package this one copy by various methods; in PaP3 a termination signal is provided by the interaction of a specific sequence in the DNA (the cos sequence) with TerS.

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2021 CHESS Users' Meeting - Save the Date!

Our annual Users' Meeting consists of:

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Biology Under Extreme Conditions:2030 and Beyond - CHESS 2030 Workshop

These four short sessions over two days are intended to cover broad areas and should be accessible to persons outside the field. Though topics are suggested, nothing is written in stone and nothing is off the table.

Each day will feature an IDEA SLAM! Give us your 3-min “elevator pitch” and tell us about your research: what is hot in your field? What is your dream experiment (X-ray or otherwise)? These strictly timed sessions are very popular among both students and PI’s. Register at the link provided! 

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CHESS receives $32.6M from NSF for new X-ray beamline

The HMF beamline, to be located at CHESS’s Center for High Energy X-ray Science (CHEXS), is a partnership with the National High Magnetic Field Laboratory (MagLab) in Florida and the University of Puerto Rico (UPR).

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  • Read more about CHESS receives $32.6M from NSF for new X-ray beamline

CHESS Restarts for Remote Research

The Cornell High Energy Synchrotron Source, CHESS, has reopened for researchers after a long shutdown due to CoVID-19. Users who typically travel from all over the world to perform research at CHESS are now able to study their samples by logging in remotely from their home institution.

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September 2020 Message from the Directors

Dear Colleagues,

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ACA Workshop Highlights Practical Application of Small Angle

(From the workshop description) Small angle X-ray and neutron scattering (SAXS/SANS, or SAS) has experienced dramatic growth over the past fifteen years within the structural biology community, emerging as an important and versatile analytical technique for the study of the structure and function of biological macromolecules in solution.

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Richard Gillilan describes capabilities of BioSAXS at the 70th Annual ACA meeting

Life on Earth manages to exist in the Mariana Trench and deep below the ocean floor, where extreme conditions create large effects on the behavior of biological molecules.

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  • Read more about Richard Gillilan describes capabilities of BioSAXS at the 70th Annual ACA meeting

Virtual Poster Session-2020

Structural Biology

Moderators/Awards Committee: Marian Szebenyi, David Schuller
  • Cryogenic SAXS for Structural Biology - David Moreau, Cornell University

  • Effect of High Pressure on RNA and Protein folding - Jinqiu Wang, Rensselaer Polytechnic Institute (Poster Slam!)

  • Structural basis of reiterative transcription from the pyrG and pyrBI promoters by bacter

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Diffuse X-ray Scattering from Correlated Motions in a Protein Crystal

This work provides the first convincing demonstration of protein diffuse scattering data collection and analysis, opening the door to future applications in structural biology.
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