Selective modification of cytosines in oligodeoxyribonucleotides.
Selective modification of cytosines in oligodeoxyribonucleotides.
复制标题
寡脱氧核糖核苷酸中胞嘧啶的选择性修饰。
DOI:
10.1021/bc00013a012
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发表时间:
1992
影响因子:
4.7
通讯作者:
Cushman,CD
中科院分区:
文献类型:
--
作者:
Miller,PS;Cushman,CD
A single deoxycytidine residing in an oligodeoxyribonucleotide which also contains 5-methyldeoxycytidines can be selectively derivatized with various alkylamines by sodium bisulfite-catalyzed transamination. Selective transamination results because 5-methylcytosine, unlike cytosine, does not form a bisulfite adduct. When the reaction is carried out at pH 7.1, transamination in the oligomer appears to occur to greater than 95% with little or no deamination. This procedure has been used to introduce aminoalkyl or carboxyalkyl side chains at the N4-position of a deoxycytidine in oligonucleotides. These side chains contain potentially reactive amine or carboxy groups which could serve as a sites for further conjugation of the oligomer with a variety functional groups. Oligonucleotides which carry these side chain form duplexes and triplexes with appropriate complementary single-stranded or double-stranded oligodeoxyribonucleotide target molecules. Thestabilities of the duplexes are similar to those formed by unmodified oligomers, whereas the stability of the triplexes is approximately 18 C lower than that formed by unmodified oligomers.
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DOI:
10.1080/07328318708056219
发表时间:
1987
期刊:
Nucleosides, Nucleotides & Nucleic Acids
影响因子:
--
作者:
J. Roduit;Jeffrey G Shaw;A. Chollet;A. Chollet
通讯作者:
A. Chollet
影响因子:
14.9
作者:
HARALAMBIDIS, J;DUNCAN, L;TREGEAR, GW
通讯作者:
TREGEAR, GW
影响因子:
--
作者:
U. Englisch;Gauss Dh
通讯作者:
Gauss Dh
影响因子:
14.9
作者:
Draper,DE
通讯作者:
Draper,DE
影响因子:
14.9
作者:
Schulman,LH;Pelka,H;Reines,SA
通讯作者:
Reines,SA