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镰状细胞血红蛋白的预凝胶化聚集

Pregelation aggregation of sickle cell hemoglobin.

作者信息

Wilson W W, Luzzana M R, Penniston J T, Johnson C S

出版信息

Proc Natl Acad Sci U S A. 1974 Apr;71(4):1260-3. doi: 10.1073/pnas.71.4.1260.

Abstract

Quasi-elastic light scattering was used to detect the initial stage of aggregation of hemoglobin S solutions. Aggregation of a hemolysate upon deoxygenation was found to occur at concentrations above 11 g/dl, but purified hemoglobin S solutions showed evidence of aggregation only for concentrations greater than 14 g/dl. A transition from a nonaggregated to an aggregated state was observed when the oxygen pressure in solution was reduced below a critical value. The total intensity of the scattered light during the early stages of aggregation was found to increase linearly with time. This result is consistent with a linear association process in which any size aggregate can combine with any other size aggregate.

摘要

准弹性光散射被用于检测血红蛋白S溶液聚集的初始阶段。发现当浓度高于11 g/dl时,溶血产物在脱氧时会发生聚集,但纯化的血红蛋白S溶液仅在浓度大于14 g/dl时显示出聚集迹象。当溶液中的氧压降低到临界值以下时,观察到从非聚集状态到聚集状态的转变。发现在聚集早期散射光的总强度随时间线性增加。该结果与线性缔合过程一致,在该过程中任何大小的聚集体都可以与任何其他大小的聚集体结合。

相似文献

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Pregelation aggregation of sickle cell hemoglobin.镰状细胞血红蛋白的预凝胶化聚集
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Conformational requirements for the polymerization of hemoglobin S: studies of mixed liganded hybrids.
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A temperature-dependent latent-period in the aggregation of sickle-cell deoxyhemoglobin.
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Sickle hemoglobin polymerization in solution and in cells.镰状血红蛋白在溶液中和细胞中的聚合。
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本文引用的文献

3
Properties of sickle-cell haemoglobin.镰状细胞血红蛋白的特性。
Biochem J. 1957 Feb;65(2):212-9. doi: 10.1042/bj0650212.
6
Molecular pathology of human haemoglobin.人类血红蛋白的分子病理学
Nature. 1968 Aug 31;219(5157):902-9. doi: 10.1038/219902a0.

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