Table 1.

Summary of discovery experiments in pooled apoptotic cells (stage 1A)

Total proteins identified	Sites	Proteins
Total α-amines	2,083	1,256
α-Amines from N-terminal protease*	106	99
α-Amines from signal or transit peptide removal†	435	351
α-Amines from endoprotease processing‡	1,542	916
Endoprotease processing/protein	1,542/916 = 1.68
Total Asp cleavage	674	564
α-Amines from endoproteolytic caspase cleavage‡	557	470
Endoproteolytic Asp cleavage/protein	557/470 = 1.19

*α-Amine < 4 amino acids of translation and initiation.

^†α-Amine 4 to 40 amino acids of translation and containing signal peptide.

^‡α-Amine > 40 amino acids.