概括
在小鼠中,T/t复合体影响发育和生殖. 研究表明,编码蛋白质p63/6.9的TCP-1基因可能不在T位点,尽管此前的假设.
科学领域:
- 遗传学 是一个遗传学.
- 发育生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 鼠标染色体17上的T/t复合体影响胚胎发育,精子生成和重组.
- 在T/t复合体中的一个基因TCP-1编码细胞表面蛋白p63/6.9.9.
- 野生型Tcp-1b产生p63/6.9b,而突变型Tcp-1a产生更酸性的p63/6.9a.
研究的目的:
- 为了研究TCP-1基因的精确遗传位置.
- 要确定T位是否负责编码p63/6.9蛋白质.
主要方法:
- 丸细胞蛋白质的二维凝电泳.
- 从重组事件中分析部分t单元类型.
- 来自主导T位突变的p63/6.9蛋白质的表征.
主要成果:
- 发现TCP-1a与尾巴相互作用因子TT相关.
- 来自七个独立衍生的主导T位元突变的蛋白质与野生类型p63/6.9.9无法区分.
- 这表明TCP-1不在T位点.
结论:
- 负责p63/6.9蛋白质生成的TCP-1基因不太可能位于T位点.
- 这一发现完善了T/t复合体及其相关基因的遗传映射.
相关概念视频
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02:33Combinatorial Gene Control
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The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
01:30General Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...