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Continuous evolution of compact protein degradation tags regulated by selective molecular glues. Mercer JAM, DeCarlo SJ et al. Science. 2024 Mar 15;383(6688):eadk4422.

Structural basis of U12-type intron engagement by the fully assembled human minor spliceosome. Bai R, Yuan M et al. Science. 2024 Mar 15;383(6688):1245-1252.

UFM1 E3 ligase promotes recycling of 60S ribosomal subunits from the ER. DaRosa PA, Penchev I et al. Nature. 2024 Mar 14;627(8003):445–452.

The UFM1 E3 ligase recognizes and releases 60S ribosomes from ER translocons. Makhlouf L, Peter JJ et al. Nature. 2024 Mar 14;627(8003):437–444.

Targeted protein degradation via intramolecular bivalent glues. Hsia O, Hinterndorfer M et al. Nature. 2024 Mar 7;627(8002):204–211.

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News

January 22, 2024

ChimeraX 1.7.1 is available, with fixes for a few miscellaneous bugs that were identified after the 1.7 release.

December 19, 2023

The ChimeraX 1.7 production release is available! See the change log for what's new. Future Mac releases will require macOS 11 or higher.

November 6, 2023

The ChimeraX 1.7 release candidate is available – please try it and report any issues. See the change log for what's new.

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UCSF ChimeraX

UCSF ChimeraX (or simply ChimeraX) is the next-generation molecular visualization program from the Resource for Biocomputing, Visualization, and Informatics (RBVI), following UCSF Chimera. ChimeraX can be downloaded free of charge for academic, government, nonprofit, and personal use. Commercial users, please see ChimeraX commercial licensing.

ChimeraX is developed with support from National Institutes of Health R01-GM129325, Chan Zuckerberg Initiative grant EOSS4-0000000439, and the Office of Cyber Infrastructure and Computational Biology, National Institute of Allergy and Infectious Diseases.

Feature Highlight

multichannel 3D image of hiPSCs from AICS

Multichannel Light Microscopy

3D images and time series from multichannel optical microscopy are shown in the Volume Viewer tool, with easy access to hiding/showing individual channels, changing their colors, and adjusting threshold levels with the mouse. The menu of style options includes “volume” (translucent blobs, as in the image), surface, mesh, maximum intensity projection, single plane, and orthoplanes. For convenience, the step size, region bounds, and display style of different channels of the same dataset are coupled, in that changing the setting of one channel automatically changes it for the others.

The image shows human induced pluripotent stem cells, with plasma membrane in violet red, EGFP-tagged fibrillarin (as a marker for nucleolus) in yellow, and DNA (nucleus) in turquoise. The data are publicly available from the Allen Cell Explorer website, dataset: AICS-14_0.

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Example Image

HIV-1 protease B-factor coloring

B-factor Coloring

Atomic B-factor values are read from PDB and mmCIF input files and assigned as attributes that can be shown with coloring and used in atom specification. This example shows B-factor variation within a structure of the HIV-1 protease bound to an inhibitor (PDB 4hvp). For complete image setup, including positioning, color key, and label, see the command file bfactor.cxc.

Additional color key examples can be found in tutorials: Coloring by Electrostatic Potential, Coloring by Sequence Conservation

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