Photochemical crosslinking in oligonucleotide-protein complexes between a bromine-substituted 2-5A analog and 2-5A-dependent RNase by ultraviolet lamp or laser.
Photochemical crosslinking in oligonucleotide-protein complexes between a bromine-substituted 2-5A analog and 2-5A-dependent RNase by ultraviolet lamp or laser.
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通过紫外线灯或激光,溴取代的 2-5A 类似物和 2-5A 依赖性 RNase 之间的寡核苷酸-蛋白质复合物发生光化学交联。
DOI:
10.1016/0003-2697(90)90684-2
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发表时间:
1990
影响因子:
2.9
通讯作者:
Silverman,RH
中科院分区:
文献类型:
--
作者:
Nolan-Sorden,NL;Lesiak,K;Bayard,B;Torrence,PF;Silverman,RH
2′,5′-oligoadenylates known as 2-5A [px(A2′p)nA; x = 2 or 3, n ≥ 2] are produced in interferon-treated cells in response to double-stranded RNA. 2-5A binds with high affinity to a 2-5A-dependent RNase resulting in the cleavage of single-stranded RNA. An efficient, rapid, and extremely sensitive photoaffinity labeling method was developed to facilitate detection of 2-5A-dependent RNase. A bromine-substituted and radioactive derivative of 2-5A, the 5′-monophosphate, p(A2′p)2(br8A2′p)2A3′-[32P]Cp, was synthesized as probe for 2-5A-dependent RNase. Even though this bromine-substituted analog of 2-5A bore no 5′-terminal triphosphate or diphosphate, it bound to 2-5A-dependent RNase with the same high affinity as did 2-5A per se but it was a less effective activator of the RNase under the present assay conditions. The presence of bromine atoms in the 2-5A analog enhanced by more than 200-fold crosslinking to 2-5A-dependent RNase under a uv lamp; many additional polypeptides were also labeled but at much lower levels. Furthermore, using high-intensity uv laser irradiation (308 nm) covalent attachment of the bromine-substituted 2-5A analog to 2-5A-dependent RNase was readily achieved within 10−6s.
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影响因子:
64.8
作者:
B. Williams;R. R. Golgher;R. R. Golgher;Ronald E. Brown;Christopher S. Gilbert;I. M. Kerr
通讯作者:
I. M. Kerr
影响因子:
64.8
作者:
KNIGHT, M;CAYLEY, PJ;KERR, IM
通讯作者:
KERR, IM
DOI:
10.1111/j.1432-1033.1985.tb08695.x
发表时间:
1985
期刊:
European journal of biochemistry
影响因子:
--
作者:
Krause,D;Silverman,RH;Jacobsen,H;Leisy,SA;Dieffenbach,CW;Friedman,RM
通讯作者:
Friedman,RM
影响因子:
4.8
作者:
K. Lesiak;P. Torrence
通讯作者:
P. Torrence
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