Pluripotentialities of a quenched fluorescent peptide substrate library: enzymatic detection, characterization, and isoenzymes differentiation

Protease inhibitors represent a major class of drugs, even though a large number of proteases remain unexplored. Consequently, a great interest lies in the identification of highly sensitive substrates useful for both the characterization and the validation of these enzyme targets and for the design of inhibitors as potential therapeutic agents through high-throughput screening (HTS). […] Read full post »

Identification of an Endothelin-converting Enzyme-2-specific Fluorigenic Substrate and Development of an in Vitro and ex Vivo Enzymatic Assay

Endothelin-converting enzyme-2 (ECE-2) is a membranebound zinc-dependent metalloprotease that shares a high degree of sequence homology with ECE-1, but displays an acidic pH optimum characteristic of maturing enzymes acting late in the secretory pathway. Although ECE-2, like ECE-1, can cleave the big endothelin intermediate to produce the vasoconstrictive endothelin peptide, its true physiological function remains […] Read full post »

Crystal structure of leukotriene A4 hydrolase in complex with kelatorphan, implications for design of zinc metallopeptidase inhibitors

Leukotriene A4 hydrolase (LTA4H) is a key enzyme in the inflammatory process of mammals. It is an epoxide hydrolase and an aminopeptidase of the M1 family of the MA clan of Zn-metallopeptidases. We have solved the crystal structure of LTA4H in complex with N-[3(R)-[(hydroxyamino)carbonyl]- 2-benzyl-1-oxopropyl]-L-alanine, a potent inhibitor of several Zn-metalloenzymes, both endopep- tidases and […] Read full post »

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