Enter the HGNC gene symbol of a human gene you want to explore. The list of known transcripts and associated protein domains (highlighted in various colors) for this gene will be displayed below. Click on an exon to obtain various information about its coordinates, length, sequence... The exons tagged by a green dot are in frame (nucleotide length is in multiple of three). Right-click on an exon and it will be marked as skipped (available only if the exon is fully coding). The selected exon is added to your cart (). From there, you can send us an Enquiry to order the corresponding AON(s).