May 23, 2019
Mar 26, 2019see all
Jun 14, 2019Mouse: MG-3575
Sequences from AEKQ02134564.1, CAAA01126939.1, LXEJ02006919.1, and AEKQ02134567.1 close the assembly gap between CU210857.3 and LO016973.1. This update provides complete alignment of NM_001001178.2, transcript for Ccdc148 (Gene ID: 227933) to the reference.
Jun 14, 2019Mouse: MG-4179
Sequences from MG954294.1, AEKR01234723.1 and MG954295.1 close the assembly gap between AC164622.3 and AC146698.10. This update provides complete representation of NM_009027.3, transcript for Rasgrf2 (GeneID: 19418).
Putting sequences into a chromosome context
The original model for representing the genome assemblies was to use a single, preferred tiling path to produce a single consensus representation of the genome. Subsequent analysis has shown that for most mammalian genomes a single tiling path is insufficient to represent a genome in regions with complex allelic diversity. The GRC is now working to create assemblies that better represent this diversity and provide more robust substrates for genome analysis.
Slides from the GRC workshop at ASHG 2018 are now on SlideShare
Transitioning to GRCh38 or GRCz11? Try the NCBI Remapping Service, which uses the same assembly-assembly alignments used by the GRC.
The GRC remains committed to its mission to improve the human reference genome assembly, correcting errors and adding sequence to ensure it provides the best representation of the human genome to meet basic and clinical research needs. We will continue to make these updates publicly available at regular intervals in the form of patch releases, but have decided to indefinitely postpone our next coordinate-changing update (GRCh39) while we evaluate new models and sequence content for the human reference assembly currently in development.
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