Table 1. Summary of the Peptides Used to Simulate the Query Spectra and Populate the Target Database.

Number of prohormones	92
Number of peptides	7850
Average (minimum, maximum) number of peptides/prohormones	74.06 (1, 1139)
Average (min, max) peptide size (amino acids)	75.23 (5, 255)
Percentage of peptides from UniProt	3.35%
Percentage of peptides not from UniProt	96.65%