假设的蛋白质激酶产物Drosophila细分极性基因的zeste-white3
E Siegfried1, L A Perkins, T M Capaci
1Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115.
Nature
|June 28, 1990
概括
泽斯特-白3 (zw3) 基因是Drosophila发育中的一个新型细分极性基因. 它编码具有氨酸-氨酸激酶活性的蛋白质,这表明它在细胞信号发送中起作用,用于细分模式.
科学领域:
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 德洛索菲拉胚胎的metameric模式依赖于母体和胚胎基因.
- 分段极性基因对于每个分段内的正确模式至关重要.
- 细分极性基因的突变导致细分删除和重复.
研究的目的:
- 为了在分子上描述一个新的分段极性基因,zeste-white3 (zw3).
- 调查 zw3 在胚胎细分模式中的作用.
主要方法:
- 对zw3基因的分离和分子特征.
- 对母体和胚胎中 zw3.3 的转录进行比较.
- 对 zw3 突变表型的分析.
主要成果:
- zw3突变胚胎表现出与裸体 (nkd) 突变胚胎相似的表型,包括腹腔牙的损失.
- 这种 zw3 基因编码的蛋白质与蛋白质酶-三蛋白质激酶的同质性.
- zw3因其酶域而在特征化的分段极性基因中是独一无二的.
结论:
- zw3在Drosophila胚胎发生过程中在建立细胞身份和细分边界方面发挥作用.
- zw3的氨酸-氨酸激酶活性表明它参与了信号传导途径.
- zw3是Drosophila发育中的细分极性的关键调节者.
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