| abstract |
Kind Code: A1 A peptide that promotes the biological activity of cathepsin E (CE) and has a higher activation function than conventional peptides, and the measurement of CE activity and the amount of CE in a sample using the peptide Providing a way. SOLUTION: Formula 1: X1-C-X3-X4-X5-D-X7-X8-VEEV-Q-X13-E-V-A-EA-X19-X20-X21-X22 -L-X24-L-X26-P-G-X29 (wherein X1 is G, L, N, A or V, X3 is P or T, X4 is C, H or Y, X5 is I, A , E or V, X7 is F or L, X8 is K or M, X13 is V or M, X19 is L, T, Q or P, X20 is L, S, Q, E or P, X21 is S, T Or A, X22 is A or R, X24 is S or H, X26 is S or H, X29 is W or S) (SEQ ID NO: 1), wherein X8 is M and X29 is A peptide excluding the amino acid sequence S. [Selection diagram] FIG. |