New & Noteworthy
Changes to Saccharomyces cerevisiae GFF3 file
March 01, 2024
The saccharomyces_cerevisiae.gff contains sequence features of Saccharomyces cerevisiae and related information such as Locus descriptions and GO annotations. It is fully compatible with Generic Feature Format Version 3. It is updated weekly.
After November 2020, SGD updated the transcripts in the GFF file to reflect the experimentally determined transcripts (Pelechano et al. 2013, Ng et al. 2020), when possible. The longest transcripts were determined for two different growth media – galactose and dextrose. When available, experimentally determined transcripts for one or both conditions were added for a gene. When this data was absent, transcripts matching the start and stop coordinates of an open reading frame (ORF) were used.
Beginning in February 2024, SGD increased the start and stop coordinates of genes to encompass the start and stop coordinates of the longest experimentally determined transcripts, regardless of condition. This change was made in order to comply with JBrowse 2, a newer and more extensible genome browser, which requires that parent features in GFF files (genes) are larger than child features (mRNA, CDS, etc) (Diesh et al., 2023).
This is a standard format used by many groups. SGD uses the GFF file to load the reference tracks in SGD’s genome browser resource.
Categories: Announcements, Data updates
Tags: biology, blog, genetics, news, Saccharomyces cerevisiae