作者:Tomáš Lášek、Magdalena Petrová、Ivana Košiová、Ondřej Šimák、Miloš Buděšínský、Jaroslav Kozák、Jan Snášel、Zdeněk Vavřina、Gabriel Birkuš、Ivan Rosenberg、Ondřej Páv
DOI:10.1016/j.bmc.2022.116632
日期:2022.2
major player in the interferon-induced antiviral defense mechanism of cells. Upon sensing viral dsRNA, 5′-phosphorylated 2′,5′-oligoadenylates are synthesized, and subsequently activate latent RNase L. To determine the influence of 5′-phosphate end on the activation of human RNase L, four sets of 5′-phosphonate modified oligoadenylates were prepared on solid-phase. The ability of these 5′-modified oligoadenylates
寡腺苷酸合成酶-核糖核酸酶 L 途径是干扰素诱导的细胞抗病毒防御机制的主要参与者。在感知病毒 dsRNA 后,合成 5'-磷酸化的 2',5'-寡腺苷酸,随后激活潜伏的 RNase L。为了确定 5'-磷酸末端对人 RNase L 激活的影响,四组 5'-在固相上制备膦酸酯修饰的寡腺苷酸。探索了这些带有缩短的、等排的和延长的膦酸酯键的 5'-修饰的寡腺苷酸激活 RNase L 的能力。我们发现等排键和延长一个原子的键通常被具有 EC 50的酶很好地耐受值与天然活化剂相当。相反,缩短一个原子或延长两个原子的键的活性降低。