Characterization of a 2′,5′-Oligoadenylate (2–5A)-dependent 37-kDa RNase L
Characterization of a 2′,5′-Oligoadenylate (2–5A)-dependent 37-kDa RNase L
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2′,5′-寡腺苷酸 (2–5A) 依赖性 37-kDa RNase L 的表征
DOI:
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发表时间:
2001
影响因子:
4.8
通讯作者:
R. Suhadolnik
中科院分区:
文献类型:
--
作者:
Susan E. Shetzline;R. Suhadolnik
Upregulation of key components of the 2′,5′-oligoadenylate (2–5A) synthetase/RNase L pathway have been identified in extracts of peripheral blood mononuclear cells from individuals with chronic syndrome, including the presence of a low molecular weight form of RNase L. In this study, analysis of 2′,5′-Oligoadenylate (2–5A) binding and activation of the 80- and 37-kDa forms of RNase L has been completed utilizing photolabeling/immunoprecipitation and affinity assays, respectively. Saturation of photolabeling of the 80- and the 37-kDa RNase L with the 2–5A azido photoprobe, [32P]pApAp(8-azidoA), was achieved. Half-maximal photoinsertion of [32P]pApAp(8-azidoA) occurred at 3.7 × 10−8 m for the 80-kDa RNase L and at 6.3 × 10−8 m for the 37-kDa RNase L. Competition experiments using 100-fold excess unlabeled 2–5A photoaffinity probe, pApAp(8-azidoA), and authentic 2–5A (p3A3) resulted in complete protection against photolabeling, demonstrating that [32P]pApAp(8-azidoA) binds specifically to the 2–5A-binding site of the 80- and 37-kDa RNase L. The rate of RNA hydrolysis by the 37-kDa RNase L was three times faster than the 80-kDa RNase L. The data obtained from these 2–5A binding and 2–5A-dependent activation studies demonstrate the utility of [32P]pApAp(8-azidoA) for the detection of the 37-kDa RNase L in peripheral blood mononuclear cell extracts.
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影响因子:
2.9
作者:
Nolan-Sorden,NL;Lesiak,K;Bayard,B;Torrence,PF;Silverman,RH
通讯作者:
Silverman,RH
影响因子:
2.9
作者:
Shoemaker,MT;Haley,BE
通讯作者:
Haley,BE
DOI:
--
发表时间:
1990
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Dolan,JW;Marshall,NF;Richardson,JP
通讯作者:
Richardson,JP
DOI:
--
发表时间:
1994
期刊:
In vivo (Athens, Greece)
影响因子:
--
作者:
Suhadolnik,RJ;Reichenbach,NL;Hitzges,P;Adelson,ME;Peterson,DL;Cheney,P;Salvato,P;Thompson,C;Loveless,M;Müller,WE
通讯作者:
Müller,WE
影响因子:
2.9
作者:
Suhadolnik,RJ;Karikó,K;SobolJr,RW;Li,SW;Reichenbach,NL;Haley,BE
通讯作者:
Haley,BE