Software for Computing and Annotating Genomic Ranges
Figure 1
Tabular (top) and visual (bottom) representation of the exons for the human KRAS gene, derived from the UCSC known gene annotation.
In the table, the columns seqnames, start and end locate the exons in the genome. The strand column indicates the direction of transcription. The exons are grouped into transcripts by tx_id, and the exon IDs are given by exon_id. Virtually all genomic data sets fit this pattern: genomic location, followed by a series of columns, often including strand and/or score, that annotate that location. In the plot, the rectangles represent exonic regions, and the arrows represent the introns, as well as the strand.