Peptide-based compounds including heteroatom-containing, three-membered rings efficiently and selectively inhibit specific activities of N-terminal nucleophile (Ntn) hydrolases. The activities of those Ntn having multiple activities can be differentially inhibited by the compounds described. For example, the chymotrypsin-like and PGPH activities of the 20S proteasome can be selectively inhibited with the inventive compounds. The peptide-based compounds include at least three peptide units, an epoxide or aziridine, and functionalization at the N-terminus, such as a detectable label. Along with therapeutic utilities, these peptide based compounds can be used in assays useful for screening, monitoring, diagnostic and/or dosing purposes.
基于肽的化合物包括含杂原子的三元环,能够高效且选择性地抑制N-末端亲核试剂(Ntn)
水解酶的特定活性。所述化合物可以不同程度地抑制具有多种活性的Ntn的活性。例如,20S
蛋白酶体的类胰
蛋白酶样和
PGPH活性可以通过这些创新性化合物进行选择性抑制。基于肽的化合物包括至少三个肽单元、环氧或氮杂环和N-末端的功能化,例如可检测标记。除了治疗用途外,这些基于肽的化合物还可用于筛选、监测、诊断和/或剂量目的的检测中。