Table 1.

YPED spectral library BLAST results (UniProtKB/SwissProt Database)

Species	Blast protein ount	Blast peptide ount
E. coli	4080	48,003
Yeast	6007	75,253
Rat	7661	154,580
Mouse	16,154	287,242
Human	19,327	340,449

Note: Proteins and peptides are filtered prior to being added to our spectral library. Protein filtering criteria were as follows; for a protein to be identified, it must contain multiple matches to more than one peptide from the same protein and their peptides must have a Mascot score greater than or equal to the homology score.