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UCSF Chimera 1.12 released


A new production release of UCSF Chimera (version 1.12) is available:

Download is free for noncommercial use. Platforms: Windows, Mac OS X, Linux.

New since version 1.11 see release notes for the full list:

General I/O, Display:

  • Updated URLs for fetching PDB, mmCIF, EDS
  • improved initial display of EDS difference map (shows both positive and negative isosurfaces)
  • "click-to-center" mouse mode (default Ctrl-right button) uses surface vertex instead of entire surface
  • "clip" and "thickness" commands prevent placing the back plane in front of the front plane

Structure Analysis and Modeling:

  • AmberTools updated to version 17
  • Add Charge uses precalculated charges for NAD and NDP
  • Morph Conformations "core fraction" exposed for more control over hinge detection
  • "hbonds" command option to show as dashed or dotted lines


  • Mol2 output includes metal-coordination bonds
  • Dock Prep consistent handling of alternate locations in adjacent residues

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