LRG Transcripts Track Settings
 
Locus Reference Genomic (LRG) / RefSeqGene Fixed Transcript Annotations   (All Genes and Gene Predictions tracks)

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Color track by bases: Help on base coloring

Alignment Gap/Insertion Display Options Help on display options
Draw double horizontal lines when both genome and query have an insertion
Draw a vertical purple line for an insertion at the beginning or end of the
query, orange for insertion in the middle of the query
Draw a vertical green line where query has a polyA tail insertion


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Data last updated at UCSC: 2021-09-23 10:48:42

Description

This track shows the fixed (unchanging) transcript(s) associated with each Locus Reference Genomic (LRG) sequence. LRG sequences are manually curated, stable DNA sequences that surround a locus (typically a gene) and provide an unchanging coordinate system for reporting sequence variants. They are not necessarily identical to the corresponding sequence in a particular reference genome assembly (such as Dec. 2013 (GRCh38/hg38)), but can be mapped to each version of a reference genome assembly in order to convert between the stable LRG variant coordinates and the various assembly coordinates.

We import the data from the LRG database at the EBI. The NCBI RefSeqGene database is almost identical to LRG, but it may contain a few more sequences. See the NCBI documentation.

The LRG Regions track, in the Mapping and Sequencing Tracks section, includes more information about the LRG including the HGNC gene symbol for the gene at that locus, source of the LRG sequence, and summary of differences between LRG sequence and the genome assembly.

Methods

LRG sequences are suggested by the community studying a locus (for example, Locus-Specific Database curators, research laboratories, mutation consortia). LRG curators then examine the submitted transcript as well as other known transcripts at the locus, in the context of alignment and public expression data. For more information on the selection and annotation process, see the LRG FAQ, (Dalgleish, et al.) and (MacArthur, et al.).

Credits

This track was produced at UCSC using LRG XML files. Thanks to LRG collaborators for making these data available.

References

Dalgleish R, Flicek P, Cunningham F, Astashyn A, Tully RE, Proctor G, Chen Y, McLaren WM, Larsson P, Vaughan BW et al. Locus Reference Genomic sequences: an improved basis for describing human DNA variants. Genome Med. 2010 Apr 15;2(4):24. PMID: 20398331; PMC: PMC2873802

MacArthur JA, Morales J, Tully RE, Astashyn A, Gil L, Bruford EA, Larsson P, Flicek P, Dalgleish R, Maglott DR et al. Locus Reference Genomic: reference sequences for the reporting of clinically relevant sequence variants. Nucleic Acids Res. 2014 Jan;42(Database issue):D873-8. PMID: 24285302; PMC: PMC3965024