Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ, 07079, USA.
Department of Process Research and Development, Merck & Co., Inc., Rahway, NJ, 07065, USA.
Angew Chem Int Ed Engl. 2018 May 22;57(21):6150-6154. doi: 10.1002/anie.201801299. Epub 2018 Apr 27.
A broadly applicable chemical cleavage methodology to facilitate MS/MS sequencing was developed for macrocyclic and lasso peptides, which hold promise as exciting new therapeutics. Existing methods such as Edman degradation, CNBr cleavage, and enzymatic digestion are either limited in scope or completely fail in cleavage of constrained nonribosomal peptides. Importantly, the new method was utilized for synthesizing a unique peptide-based rotaxane (both cyclic and threaded) from the lasso peptide, benenodin-1 ΔC5.
开发了一种广泛适用于大环和套索肽的化学裂解方法,以促进 MS/MS 测序,这些肽类有望成为令人兴奋的新型治疗药物。现有的方法,如 Edman 降解、CNBr 裂解和酶消化,要么范围有限,要么完全无法裂解约束非核糖体肽。重要的是,新方法用于从套索肽 benenodin-1 ΔC5 中合成独特的基于肽的轮烷(环状和穿线)。