Substrate Mimetics and Freezing Strategy: A Useful Combination That Broadens the Scope of Proteases for Synthesis
作者:Nicole Wehofsky、Sebastian W. Kirbach、Marion Haensler、Johannes-Dieter Wissmann、Frank Bordusa
DOI:10.1021/ol005867g
日期:2000.7.1
[reaction: see text] We present an irreversible and efficient protease-based method for peptidesynthesis which occurs independently of the primary specificity of proteases and also without proteolytic side reactions. The key feature of this approach is the combination of the substratemimeticsstrategy with frozen state enzymology. Model reactions catalyzed by several proteases qualify this approach
Substrate Mimetics-Specific Peptide Ligases: Studies on the Synthetic Utility of a Zymogen and Zymogen-Like Enzymes
作者:Kathrin Rall、Frank Bordusa
DOI:10.1021/jo026117i
日期:2002.12.1
Although proteases are capable of synthesizing peptide bonds, they are not proficient at peptide fragment ligation. Further manipulations are needed to shift the native enzyme activity from the cleavage to the synthesis of peptides. This account reports on the synthetic potential of nonactivatable trypsinogen and zymogen-like enzymes designed to minimize proteolytic side reactions during peptide synthesis.
Enzymatic Coupling of Specific Peptides at Nonspecific Ligation Sites: Effect of Asp189Glu Mutation in Trypsin on Substrate Mimetic-Mediated Reactions
作者:Shaojun Xu、Kathrin Rall、Frank Bordusa
DOI:10.1021/jo001243c
日期:2001.3.1
reactions using substratemimetics as the acyl donor and specific amino acid-containing peptides as the acyl acceptor. The competition assay verifies the predicted shift in substrate preference from Lys and Arg to the substratemimetics and, thus, from cleavage to synthesis of peptide bonds. The combination of results obtained qualifies the trypsin mutant D189E as the first substrate mimetic-specific