细胞自由转录翻译的发展
Ajay Kumar1, Juveriya Israr2, Shabroz Alam3
1Department of Biotechnology, Faculty of Engineering and Technology, Rama University, Kanpur, Uttar Pradesh, India.
Progress in molecular biology and translational science
|January 25, 2026
概括
无细胞转录-翻译 (TXTL) 系统在体外合成蛋白质,为合成生物学和生物技术提供灵活性. 为了未来的进步,正在解决成本和收益率等挑战.
科学领域:
- 生物技术是生物技术.
- 合成生物学 合成生物学
- 分子生物学分子生物学
背景情况:
- 无细胞转录-翻译 (TXTL) 系统在活体细胞外复制体内蛋白质合成.
- TXTL系统使用细胞提取物,其中含有重要的蛋白质合成机器,如核糖体和RNA聚合酶.
- 这些系统已经从大肠杆菌提取物演变为包括多种多样化的 prokaryotic 和 eukaryotic 源.
研究的目的:
- 提供对无细胞转录-翻译 (TXTL) 系统的全面概述.
- 突出TXTL系统在各种科学领域的优势和应用.
- 确定TXTL系统开发的当前挑战和未来方向.
主要方法:
- 使用细胞提取物 (细菌,酵母,真核生物) 来进行转录和翻译.
- 使用DNA模板指导蛋白质合成.
- 分析TXTL系统性能,以测量速度,效率,准确性和产量.
主要成果:
- TXTL系统能够快速,高效和准确地合成天然和非天然蛋白质.
- 与基于细胞的方法相比,优势包括增强的化学耐药性和简化标签.
- 应用范围包括合成生物学,生物制药生产和基本生物学研究.
结论:
- 无细胞TXTL系统为体外蛋白质合成提供了显著的优势.
- 关键的挑战包括高成本,有限的产量,缺乏复杂的翻译后修改和提取不稳定性.
- 未来的研究将专注于降低成本,提高产量,增强改造,稳定性和连续流系统,以扩大应用并加深生物学理解.
更多相关视频
07:59A High-Yield Streptomyces Transcription-Translation Toolkit for Synthetic Biology and Natural Product Applications
Published on: September 10, 2021
4.7K
12:54Real-time Analysis of Transcription Factor Binding, Transcription, Translation, and Turnover to Display Global Events During Cellular Activation
Published on: March 7, 2018
14.0K
相关概念视频
Transcription Factors
82.4K
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...
82.4K
Translation
156.0K
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
156.0K
Transcription Attenuation in Prokaryotes
18.2K
Transcriptional attenuation occurs when RNA transcription is prematurely terminated due to the formation of a terminator mRNA hairpin structure. Bacteria use these hairpins to regulate the transcription process and control the synthesis of several amino acids including histidine, lysine, threonine, and phenylalanine. Transcription attenuation takes place in the non-coding regions of mRNA.
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
18.2K
Transcription
155.9K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
155.9K
Master Transcription Regulators
7.7K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.7K
Initiation of Translation
38.5K
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
38.5K
