Region View (A) The different colors of the cDNA and peptide sequences indicate two different exons, or an exon and an intron. The amino acid letter colored in red overlaps with the splice site. (B) Green and light cyan backgrounds are used to indicate SNP in cDNA and peptide sequences. (C) By clicking on a SNP in sequence, users can see the details of the SNP. A link to the dbSNP database is provided.