Splice variants for loci classed as protein-coding appear in this track. This track also displays a confidence ranking for the exon-intron structure of each gene in TAIR10. Our ranking system attributes confidence rankings to each exon and gene model in TAIR10 based on the following types of experimental and computational evidence:1. Arabidopsis transcript data (ESTs, cDNAs and fragmented mRNAs from Ecker lab). 2. Proteomics data from Mass Spec experiments, 3. Cross-species alignments, 4. Vista genomic sequence conservation. Two flat files containing all exon and gene model confidence rankings (the four individual rankings as well as the overall rankings) and a detailed documentation file (gene_confidence_documentation. pdf) are located on the TAIR ftp site at: