Left-handed DNA: from synthetic polymers to chromosomes.
Left-handed DNA: from synthetic polymers to chromosomes.
复制标题
左手 DNA:从合成聚合物到染色体。
DOI:
--
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发表时间:
1983
影响因子:
4.4
通讯作者:
F. Eckstein
中科院分区:
文献类型:
--
作者:
T. Jovin;L. McIntosh;D. Arndt;D. Zarling;M. Robert‐Nicoud;J. Van De Sande;K. Jorgenson;F. Eckstein
The interconversions between right-handed (R) and left-handed (L) helical conformations of DNA have been assessed by spectroscopic, electrophoretic, immunochemical, and enzymatic techniques. We have screened salt and solvent conditions which facilitate these transitions, as well as certain chemical modifications of the bases and backbone of defined synthetic polynucleotides. These include major and minor groove substituents as well as phosphorothioate analogues of selected phosphodiester bonds. We have established: R-L transitions in poly[d(G-C)] with iodo, bromo, methyl, and aza substitutions at the C5 position of cytosine, or phosphorothioate modification of the dGpC linkage. R-L transitions in the [d(A-C).d(G-T)]n sequence family using polymers modified as in the case of poly[d(G-C)]. The isomerizations are highly salt and temperature dependent. a possible L form of poly[d(A-T)] substituted with 2-amino adenine. the immunogenicities of constitutive and facultative Z-DNAs. the recognition specificities of different anti-Z-DNA IgGs for the spectrum of available polynucleotide probes. Some IgGs are sequence-specific. stabilization by IgG of otherwise transient left-handed conformations. anti-Z-DNA IgG binding to acid-fixed polytene chromosomes from the Diptera Drosophila, Chironomus, and Glyptotendipes. Laser scanning microscopy shows a maximal binding of 1 IgG per 3000-15,000 basepairs in acid fixed preparations. anti-Z-DNA IgG binding to negatively supercoiled plasmid, viral, phage, and recombinant closed circular DNAs. transcription from Z and Z* (associated) left-handed templates. From these and other results we propose that Z*-DNA may have important structural-functional roles in the cell.
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影响因子:
64.8
作者:
Walmsley,RM;Szostak,JW;Petes,TD
通讯作者:
Petes,TD
DOI:
10.1101/sqb.1983.047.01.018
发表时间:
1983
期刊:
Cold Spring Harbor symposia on quantitative biology
影响因子:
--
作者:
Castleman,H;Erlanger,BF
通讯作者:
Erlanger,BF
DOI:
10.1073/pnas.78.3.1451
发表时间:
1981
影响因子:
11.1
作者:
Santella,RM;Grunberger,D;Weinstein,IB;Rich,A
通讯作者:
Rich,A
DOI:
10.1073/pnas.78.6.3546
发表时间:
1981-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
LAFER, EM;MOLLER, A;RICH, A
通讯作者:
RICH, A
DOI:
10.1101/sqb.1983.047.01.020
发表时间:
1983
期刊:
Cold Spring Harbor symposia on quantitative biology
影响因子:
--
作者:
Lafer,EM;Möller,A;Valle,RP;Nordheim,A;Rich,A;Stollar,BD
通讯作者:
Stollar,BD