Individual regulation of the accumulation of H1 mRNA and core histone mRNAs in sea urchin embryos.
Individual regulation of the accumulation of H1 mRNA and core histone mRNAs in sea urchin embryos.
复制标题
海胆胚胎中 H1 mRNA 和核心组蛋白 mRNA 积累的个体调节。
DOI：
10.1128/mcb.3.6.974-981.1983
复制
发表时间：
1983
影响因子：
5.3
通讯作者：
Infante,AA
中科院分区：
文献类型：
--
作者：
Baker,EJ;Infante,AA
The relative cytoplasmic accumulation of the individual histone mRNAs in sea urchins was determined by gel analysis of3H-labeled cytoplasmic RNA isolated from embryos of the early cleavage through the mesenchyme blastula stages. A number of separate determinations showed that H1 mRNA accumulates at a molar ratio of 0.5 or less compared with each of the H2 or H3 core histone mRNAs through approximately the first 12 h of embryonic development. After this time, the accumulation of H1 mRNA increases relative to the core histone mRNAs, and approximately equimolar amounts of the histone mRNAs are produced by about the 14-h stage. The equimolar synthesis of H1 mRNA appears to be transient, returning to 0.5-molar levels several hours later. The increase in H1 mRNA accumulation, relative to the core histone RNAs, is coincident with the transition from expression of the early (α) sea urchin histone gene set to the late histone genes. Since all five of the early histone genes occur in a 1:1 ratio within repeating units, the data suggest that the genes within a single repeat, or their immediate products, are individually regulated. Gel analysis of the proteins synthesized in vivo by embryos demonstrates that the pattern of synthesis of the histone proteins reflects the changing ratios of the histone mRNAs.
