操纵转录生物传感器的分子特异性,以寻找托代谢产物和类似物
Chenggang Xi1,2, Yuefeng Ma1,2, Matthew B Amrofell1
1Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO, USA.
Cell reports. Physical science
|November 8, 2024
概括
研究人员开发了一种新的生物传感策略,以精确检测对健康至关重要的托代谢物. 这种可适应的"插即用"方法通过在复杂的生物样本中识别特定化合物来增强诊断和治疗.
科学领域:
- 微生物学和生物技术
- 代谢学和生物感知学
- 合成生物学和基因工程 合成生物学和基因工程
背景情况:
- 来自肠道微生物群的托芬代谢物显著影响人类的生理和心理健康.
- 量化具有高特异性的结构相似的托衍生物是一个主要的分析挑战.
- 目前的局限性阻碍了点诊断和有针对性的治疗策略的发展.
研究的目的:
- 为托代谢产物开发一种高度特定和适应性的生物传感方法.
- 为了能够在复杂的生物基质中精确识别特定的代谢物.
- 为先进的临床,农业和工业应用奠定基础.
主要方法:
- 采用进化分析和关键带结合残留物识别,以精确确定带特异性转录因子变异.
- 使用突变性扫描来验证已识别的残留功能.
- 综合结构预测和带对接,以阐明在非特征化的带结合域中的调节机制.
主要成果:
- 开发了一个可通用的"插即用"生物传感策略,最小的交叉活动.
- 成功设计了益生菌,用于单独的生物感应英多尔-3-酸,胺和英多尔-3-酸.
- 已证明广泛适用于检测各种托衍生物.
结论:
- 开发的生物传感策略为代谢物检测提供了高的特异性和适应性.
- 这种方法克服了当前在量化结构相似化合物的局限性.
- 在临床诊断,农业和工业领域为新型转录生物传感器铺平了道路.
更多相关视频
09:31PCR Mutagenesis, Cloning, Expression, Fast Protein Purification Protocols and Crystallization of the Wild Type and Mutant Forms of Tryptophan Synthase
Published on: September 26, 2020
4.3K
06:18Measurement of Specific Mycobacterial Mistranslation Rates with Gain-of-function Reporter Systems
Published on: April 26, 2019
5.9K
相关概念视频
01:21Repressible Operon: trp Operon
3
The trp operon in Escherichia coli exemplifies a repressible operon. It regulates the synthesis of tryptophan through repressor-mediated transcriptional control and attenuation. This dual regulatory mechanism ensures tryptophan biosynthesis occurs only when needed, conserving cellular resources.Structure of the trp OperonThe trp operon consists of five structural genes (trpE, trpD, trpC, trpB, and trpA) that encode enzymes for tryptophan biosynthesis. These genes are transcribed as a single...
3
02:42Transcription Attenuation in Prokaryotes
15.2K
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...
15.2K