Semi-synthesis of a protease-activatable collagen targeting probe

Abstract
A protease-activatable collagen targeting probe (proCNA35) is synthesized by conjugation of a synthetic collagen fragment to the collagen binding protein CNA35via a protease-cleavable linker. Cleavage of the linker by MMP1 releases the intramolecular inhibition of the collagen binding site and restores its collagen binding capacity.