Patent ID: 6849398

Claim:
A process for identifying the presence of a proteolytic cleavage activity within a sample, the process comprising the following steps: Step A: admixing the sample, potentially including a proteolytic enzyme or antibody, with an encoded reaction cassette under conditions for enabling the cleavage activity, if present within the sample, to cleave the encoded reaction cassette, the encoded reaction cassette including a solid phase matrix, a peptide substrate susceptible to cleavage by means of the proteolytic cleavage activity, and a polynucleotide having an encoding sequence capable of amplification by PCR and of detection after amplification for identifying the presence of the proteolytic cleavage activity, the solid phase matrix being linked to the polynucleotide by the peptide substrate, said cleavage of the encoded reaction cassette resulting in the formation of a soluble phase cleavage product, the soluble phase cleavage product including the polynucleotide and a cleaved portion of the peptide substrate; then Step B: isolating the soluble phase cleavage product produced in said Step A, if any; then Step C: amplifying, by PCR, the encoding sequence of the soluble phase cleavage product isolated in said Step B; then Step D: detecting the amplified encoding sequence of the soluble phase cleavage product of said Step C, if any, for identifying the presence of the proteolytic cleavage activity within the sample.