Map of identified and theoretical trypic peptides within the vIL-4 protein.

The putative leader sequence has been removed. Red bars are identified peptides (1% FDR) including peptides with missed cleavages. Dark gray bars indicate theoretical tryptic peptides with GRAVY (GRand AVerage of hydropathY) score < 0.5. Light gray bars indicate theoretical tryptic peptides with GRAVY score >= 0.5 (more hydrophobic and thus possibly more difficult to detect). Tryptic peptides shorter than 6 aa were not searched and are not shown. (PDF)