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System Requirements
OS Windows 7 or later
macOS 10.10 or later
Fedora Linux 21 or later
Red Hat Linux 7.2 or later
Ubuntu Linux 14.04 or later
Memory1 GB RAM
Hard Disk250 MB available disk space
Display1024 x 768 or higher resolution

Changes in version 4.2.7 (Dec 3, 2018)

New Functionality

  • Added support for opening Clone Manager .cm5 protein files.
    (Requested by Scott Loiler)
  • Added Nippon Genetics DNA ladders.
    (Requested by Christoph Horst and by BONI)
  • Added Bio-Rad DNA ladders.
    (Requested by Saeed)
  • Added Thermo Fisher's Trackitâ„¢ 1 Kb Plus DNA Ladder.
  • Added a "Save All" command to the top toolbar "Save" menu while interacting with collections.


  • Improved decoding of FASTA content.
  • Updated the list of default sequence authors.
  • Improved messaging when attempting to delete after placing a cursor in a protein sequence or an aligned sequence.
  • Updated the fragment sizes for NEB's improved 1 Kb Extended DNA Ladder.
    (Reported by Jing Liang)
  • Improved the Align to Reference Sequence algorithm.
    (Reported by Paula Patterson)


  • Improved detection of Gateway sites in sequences containing stretches of N's.
    (Reported by Ben Bulrich)
  • Improved exporting names of features with "<" and ">" characters to GenBank formats.
    (Reported by Wulf-Dirk Leuschner)
  • Fixed a stability issue with editing collection code numbers.
  • Improved decoding of custom numbering in Gene Construction Kit files.
  • Ensured that opened windows use the preferred top toolbar appearance.
    (Reported by Pedro Matos)
  • Improved legibility when Dark Mode is enabled on macOS 10.14 Mojave.
    (A future update will allow SnapGene to adopt a Dark Mode appearance itself.)
  • Enabled double-clicking or right-clicking to open files on Lubuntu Linux.
    (Reported by Sahand Rahi)
  • Improved the behavior when exporting aligned sequences from Align to Reference Sequence mode.
    (Reported by Lauri Lintott)
  • Made the reference sequence bold when printing an alignment to a reference sequence.
  • Improved Enzymes view so that selecting an enzyme in the name column no longer changes the sequence selection.
  • Improved stability when printing maps with long stretches of N's on macOS.
    (Reported by Ben Low)
  • Enbled import of primers from Clone Manager files that contain vertical tab characters.
    (Reported by André Michaelis)
  • Improved consistency when importing protein sequences from NCBI.
  • Fixed a number of issues with choosing and preserving templates while using cloning, gel, primer, and mutagenesis dialogs.
    (Reported by Yan Lu)
  • Improve scrolling to selected files in collection windows.
  • Updated the Addgene importer to recognize the new database output.
  • Improved multiple sequence alignment consensus accuracy.
  • Improved the import of primer lists copied from Excel.
    (Reported by Greg Shackleford)
  • Ensured that the selection in Sequence view's minimap is always blue when the window is active.
  • Fixed various issues when saving documents to non-native file formats (GenBank, FASTA, etc.).
    (Reported by Gert Peters)

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