染色质核小体的超微结构特征
Ultrastructural features of chromatin nu bodies.
作者信息
Olins A L, Senior M B, Olins D E
出版信息
J Cell Biol. 1976 Mar;68(3):787-93. doi: 10.1083/jcb.68.3.787.
Abstract
Spread chromatin fibers and isolated chromatin fragments prepared from chicken erythrocyte nuclei were stained with dilute aqueous uranyl acetate. High-resolution electron micrographs reveal two new morphological features exhibited by many of the chromatin nu bodies: (a) lateral association of the nu body with the connecting strand, and (b) a centrally stained spot approximately 15 A wide, possibly corresponding to a hole or crevice within the nu body.
摘要
从鸡红细胞核制备的伸展染色质纤维和分离的染色质片段用稀醋酸双氧铀水溶液染色。高分辨率电子显微镜照片揭示了许多染色质核小体呈现出的两个新形态特征：(a)核小体与连接链的侧向关联，以及(b)一个中心染色的斑点，宽约15埃，可能对应于核小体内的一个孔或缝隙。
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