Structural heterogeneity of pyrimidine/purine-biased DNA sequence analyzed by atomic force microscopy.
Structural heterogeneity of pyrimidine/purine-biased DNA sequence analyzed by atomic force microscopy.
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通过原子力显微镜分析嘧啶/嘌呤偏向 DNA 序列的结构异质性。
DOI:
10.1046/j.1432-1033.2002.03063.x
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
Lyubchenko,YuriL
中科院分区:
文献类型:
--
作者:
Kato,Mikio;McAllister,ChadJ;Hokabe,Shingo;Shimizu,Nobuyoshi;Lyubchenko,YuriL
We report here the direct evidence for the formation of alternative DNA structures in a plasmid DNA, termed pTIR10, containing a 0.23‐kb pyrimidine/purine‐biased (Pyr/Pur) stretch isolated from the rat genome. Long Pyr/Pur sequences are abundant in eukaryotic genomes, and they may modulate the biological activity of genes and genomes via formation of various types of triplex‐related structures. The plasmid DNA in sodium acetate buffer (pH 4.35) was deposited on APS‐modified mica, and after drying it was imaged with an atomic force microscope in air. Various types of thick protrusions have been observed on pTIR10 DNA. Structural parameters (width and height) of DNA molecules suggest that the alternative structures observed here are variations on the theme of an intramolecular triplex. The biological relevance of the structural features within Pyr/Pur stretches is discussed.
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影响因子:
2.9
作者:
Shimizu,M;Hanvey,JC;Wells,RD
通讯作者:
Wells,RD
影响因子:
4.8
作者:
GRABCZYK, E;FISHMAN, MC
通讯作者:
FISHMAN, MC
影响因子:
2.8
作者:
Mikio Kato
通讯作者:
Mikio Kato
DOI:
--
发表时间:
1995
期刊:
Scanning microscopy.
影响因子:
--
作者:
Lyubchenko,YL;Jacobs,BL;Lindsay,SM;Stasiak,A
通讯作者:
Stasiak,A
DOI:
10.1073/pnas.94.2.403
发表时间:
1997-01-21
影响因子:
11.1
作者:
Brukner, I;Belmaaza, A;Chartrand, P
通讯作者:
Chartrand, P