相关实验视频
Updated: Jul 13, 2026

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High-throughput Purification of Affinity-tagged Recombinant Proteins
Published on: August 26, 2012
与TBP相关的因子TRF1的促进体选择性特性
1Howard Hughes Medical Institute, Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.
概括
与TATA结合蛋白 (TBP) 相关的1因子 (TRF1) 优先结合并调节Drosophila tudor基因促进体. 这一发现揭示了基因选择性转录因子在metazoans精确的基因表达控制.
科学领域:
- 分子生物学分子生物学
- 发育生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 与TATA结合蛋白 (TBP) 相关的第1因子 (TRF1) 参与了Drosophila的胚胎发生.
- TRF1可能起到促进子特异性因子的作用,在转录调节中可能取代TBP.
- 确定TRF1的具体目标促进者对于理解其作用至关重要.
研究的目的:
- 识别和描述真诚的目标推广者,他们对TRF1.1有反应.
- 研究TRF1在调节基因转录中的特定作用.
- 探索基因选择性转录机械在元动物中的演变.
主要方法:
- 聚烯染色体染色 聚烯染色体染色
- 染色体免疫沉 (ChIP) 是一种
- 直接传递 RNA (mRNA) 的分析.
- 暂时的共同转移测定.
- 在体外转录反应.
- 脱氧核酶I (DNase I) 足迹测定试验
主要成果:
- 鉴定出Drosophila基因突子含有TRF1-响应性促进体.
- 证实TRF1可优先结合并直接转录图多基因.
- 图多基因中的另一个促进子被TRF1.1特别调节.
结论:
- 转生动物具有核心转录机制的基因选择性和组织特异性组成部分.
- TRF1作为Tudor基因的特定调节者,突出突出促进者特异性.
- 这项研究促进了人们对在发育过程中精确的基因表达调节的理解.
相关概念视频
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...
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...
Transcription Elongation Factors
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
Transcription Initiation
Initiation is the first step of transcription in eukaryotes. Prokaryotic RNA Polymerase (RNAP) can bind to the template DNA and start transcribing. On the other hand, transcription in eukaryotes requires additional proteins, called transcription factors, to first bind to the promoter region in the DNA template. This binding helps recruit the specific RNAP that can assemble on the DNA and start transcription.
The promoters and enhancers and their accessory proteins allow tight regulation of...
The promoters and enhancers and their accessory proteins allow tight regulation of...
General 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...
Transcription Elongation Factors
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...

