Luminescence of the solid complexes of acridine orange with RNA.

Luminescence of the solid complexes of acridine orange with RNA.
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吖啶橙与 RNA 的固体复合物的发光。

DOI:
10.1002/cyto.990020402
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发表时间:
1982
期刊:
Cytometry
影响因子:
--
通讯作者:
Melamed,MR
Melamed,MR
中科院分区:
--
文献类型:
--
作者:
Kapuscinski,J;Darzynkiewicz,Z;Melamed,MR

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吖啶橙(AO)与天然RNA或合成的RNA均聚物相互作用的产物是在广泛离子强度范围内不溶解的沉淀物。这些络合物的组成为每1个磷酸酸根中含有1个AO分子。该反应具有很强的协作性,并显示出异色发光。与RNA的碱基组成有关的发光光谱的显著差异,表征了不溶性络合物。这一观察结果表明,在AO-RNA络合物中发生了染料-碱相互作用。在用AO滴定聚(Ra)并同时测量发光和光散射的过程中,可以检测到粒子的两步形成。在D/P<0.6时,配体的协同结合与小颗粒(分子聚集体或胶束)的形成相吻合,随后在D/P>0.6时,发生协同凝聚;这种凝聚的产物是尺寸为0.35μm或更大的颗粒。证据表明,长波长发光(RNA650 Nm)是AO-∼相互作用产物的溶质-固态转变的结果,而不是以前在堆积模型中看到的经典的染料-染料相互作用的结果。由于这些新的观察结果不能完全用先前假设的AO结合的分子机制来解释,所以提出了一个替代模型。讨论了它在应用于流式细胞术的核酸定量细胞化学中的意义。
The products of interaction between acridine orange (AO) and natural RNA, or the synthetic RNA homopolymers are precipitates insoluble over a wide range of ionic strength. These complexes have a composition of 1 AO molecule per 1 phosphatate. The reaction is highly cooperative and the complex exhibits metachromatic luminescence. Significant differences in the luminescence spectra, related to base composition of RNA, characterize the insoluble complexes. This observation suggests that dye‐base interactions take place in the AO‐RNA complexes.During titration of poly(rA) with AO and simultaneous measurement of the luminescence and light scatter a two‐step formation of the particles could be detected. The cooperative binding of the ligand at D/P < 0.6 coincides with formation of small particles (molecular aggregates or micelles) and is followed at D/P > 0.6 by a cooperative agglomeration; the product of this agglomeration is particles of the size 0.35 μm and larger.Evidence is presented that suggests that the long wavelength luminescence (∼ 650 nm) is a consequence of the solute‐solid state transition of the AO‐RNA interaction product rather than the classic dye‐dye interactions previously visualized in the stacking model. Since these novel observations cannot be fully explained by the previously postulated molecular mechanisms of AO binding, an alternative model is advanced. Its implications in quantitative cytochemistry of nucleic acid as applied to flow cytometry are discussed.
吖啶橙与DNA及其碱基结合的荧光分光光度研究。
DOI: 10.1016/0003-9861(69)90020-4
发表时间: 1969
影响因子: 3.9
作者:
S. Yamabe
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新的吸收、荧光和荧光偏振梯度-Messungen am Acridinorange-Kation、ein weiterer Beitrag zum Metachromasie-Problem dieses Vitalfarbstoffs
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发表时间: 1959
期刊: Zeitschrift für Naturforschung B
影响因子: --
作者:
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肌肉对 ATP 和吖啶橙的竞争性结合。
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发表时间: 1957
影响因子: 11.1
作者:
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吖啶染料与 DNA 的相互作用:X 射线衍射和光学研究。
DOI: 10.1016/s0022-2836(66)80094-3
发表时间: 1966
影响因子: 5.6
作者:
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DOI: 10.1515/zpch-1952-20020
发表时间: 1952
期刊: Zeitschrift für Physikalische Chemie
影响因子: --
作者:
V. Zanker
通讯作者: V. Zanker