Role of the stereochemistry of 3′-fluoro-3′-deoxy analogues of 2-5A in binding to and activation of mouse RNase L
作者:Elena N. Kalinichenko、Tatjana L. Podkopaeva、Nicolai E. Poopeiko、Merike Kelve、Mart Saarma、Igor A. Mikhailopulo、Jacquelien E. van den Boogaart、Cornelis Altona
DOI:10.1002/recl.19951140202
日期:——
with p3(A2′p)3A3′[32P]pC3′p for binding to RNase L in L929 cell extracts, and (ii) to activate the partially purified RNase L from L929 cell extracts to hydrolyze poly(U)[3H], was compared to that of the related 3′-deoxy analogue [Torrence et al., J. Biol. Chem. 263, 1131 (1988)] and the parent trimer, p3A3, using radiobinding and RNase L-(2′,5′)pentaadenylate(core)-agarose assays, respectively. Evidence
两套2-5A类似物的三聚体的含9-(3-氟-3-脱氧β-d木-呋喃糖基)腺嘌呤(A合成˚F)或3'-氟-3'-脱氧腺苷(A ˚F)描述了在链的不同位置上的)以及相应的5'-单磷酸盐和5'-二磷酸化(核心)三聚体的制备。2-5A(i)的每个核糖和木糖异构体对的氟脱氧类似物与p 3(A2'p)3 A3'[ 32 P] pC3'p竞争结合L 929细胞提取物中RNase L的能力,和(ii)从L 929激活部分纯化的RNase L将用于水解聚(U)[ 3 H]的细胞提取物与相关的3'-脱氧类似物[ Torrence等人,J。化学 263,1131(1988)]和三聚体母体,第3阿3,分别使用radiobinding和RNase L-(2',5')pentaadenylate(芯) -琼脂糖测定,。证据表明三聚体的立体化学起着重要作用,特别是在第二步过程中。最惊人的发现是,与2-5A相比,p 3 A(A