Truncation of the amino-terminus of the recombinant aggrecan rAgg1mut leads to reduced cleavage at the aggrecanase site. Efficient aggrecanase catabolism may depend on multiple substrate interactions.


Aggrecanase cleavage at the Glu(373)-Ala(374) site in the interglobular domain of the cartilage proteoglycan aggrecan is a key event in arthritic diseases. The observation that substrates representing only the aggrecanase cleavage site are not catabolized efficiently by aggrecanase prompted us to investigate the requirement of aggrecanase for additional… (More)


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