Azide-PEG3-Val-Cit-PAB-MMAF is a PEG linker with an azide moiety with a cleavable amino acid group and a MMAF payload. The azide group enables Click Chemistry. The Val-Cit will specifically be cleaved by Cathepsin B. MMAF is a potent tubulin polymerization inhibitor and is used as a antitumor agent.
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