Photochemical control of RNA structure by disrupting π-stacking.
Photochemical control of RNA structure by disrupting π-stacking.
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通过破坏π堆积的RNA结构的光化学控制。
DOI:
10.1021/ja306304w
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发表时间:
2012-08-01
影响因子:
15
通讯作者:
Greenberg MM
中科院分区:
文献类型:
--
作者:
Resendiz MJ;Schön A;Freire E;Greenberg MM
Photolabile nucleotides that disrupt nucleic acid structure are useful mechanistic probes and can be used as tools for regulating biochemical processes. Previous probes can be limited by the need to incorporate multiple modified nucleotides into oligonucleotides and in kinetic studies by the rate-limiting step in the conversion to the native nucleotide. Photolysis of aryl sulfide 1 produces high yields of 5-methyluridine and product formation is complete in less than a microsecond. Aryl sulfide 1 prevents RNA hairpin formation and complete folding of the preQ1 class I riboswitch. Proper folding is achieved in each instance upon photolysis at 350 nm. Aryl sulfide 1 is a novel tool for modulating RNA structure and formation of 5-methyluridine within a radical cage suggests that it will be useful in kinetic studies.
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