Table 1: Scale change in nonspecific digestion.

DBVersionFasta size (MB)No. of proteinsNo. of peptide fragmentsIndex size (GB)

ipi.HUMAN3.8748.7191,4911,939,985,47744.44
UNIPROT-SPROT201108240.51532,2349,964,797,926235.51

Note: peptide mass is 300–8000 Dalton. Peptide length is 3–60 amino acids.