Counts of probable protein substrates of furin and cleavage sites determined by our computational-experimental approach.

<p>There are over 490 probable secretory protein substrates (or 598 GI protein sequence entries) in total (soluble proteins and membrane proteins with detected cleavage positions located in the extracellular domain). There are a total of 751 detected cleavage sites in the GI protein sequence entries which correspond to these 490 proteins.