Invariant Peptide Peptide Length (L) p peptide1 12 < 2.2840e-27 peptide2 25 < 3.1427e-56 peptide3 17 < 1.8120e-38 peptide4 26 < 1.8932e-58 peptide5 21 < 2.3863e-47 peptide6 16. < 3.0079e-36.

Table 1: Length (L) and Probability (p) of Invariant Peptides of Length 12-mer or Greater in ZEBOV and SEBOV Ebola Virus GP1,2 Protein. L is the number of amino acid positions in the peptide. p is the probability of a chance mutation at a position at which H = 0 in the total, combined and consensus ZEBOV and SEBOV sequence datasets. Amino acid sequences of the six invariant peptides are given in the Results text.