在Mycobacteria中强大的合成促进剂
Junjie Wen1, Yongmei Zhang2, Luwei Cao3
1Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai, China; School of life science, Fudan University, Shanghai, China.
Microbial pathogenesis
|August 13, 2025
概括
研究人员开发了一个新的促进器库,用于Mycobacteria的高水平基因表达. 这种工具有助于创建复合疫苗和理解菌根菌的遗传学.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 在Mycobacteria中外来基因的高水平表达对于开发复合疫苗和理解抗原功能至关重要.
- 菌根细菌 (Mycobacterium smegmatis) 是复合菌根细菌基因表达的常见宿主.
研究的目的:
- 构建一个促进器库,以增强Mycobacteria中的基因表达.
- 为了在Mycobacteria中识别用于遗传应用的强大且易于使用的促进体.
主要方法:
- 创建了一个促进器库,使用最小化的共识促进器序列mycobacteria.
- 该图书馆与绿色光蛋白 (EGFP) 基因融合,并转化为Mycobacterium smegmatis.
- 通过EGFP光来评估促进剂的强度,并对强促进剂进行了测序.
主要成果:
- 确定了许多强大的促销器,每个不到100个基对.
- 这些短促销器很容易被克隆成各种等离子体.
- 已识别的促进体促进了Mycobacteria中的高水平基因表达.
结论:
- 开发的促进器库是Mycobacteria遗传学的宝贵工具.
- 这些强大的,短的促进剂将加速创建重组疫苗和研究菌根抗原.
- 这项工作为迈科细菌的先进基因工程提供了基础.
相关概念视频
Prokaryotic Transcriptional Activators and Repressors
21.9K
The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...
Transcription of prokaryotic...
21.9K
The Eukaryotic Promoter Region
16.6K
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
16.6K
Bacterial Phylum Actinobacteria
114
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
114
Reporter Genes
11.9K
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
11.9K
Bacterial Transcription
29.4K
RNA polymerase (RNAP) carries out DNA-dependent RNA synthesis in both bacteria and eukaryotes. Bacteria do not have a membrane-bound nucleus. So, transcription and translation occur simultaneously, on the same DNA template.
Transcription can be divided into three main stages, each involving distinct DNA sequences to guide the polymerase. These are:
Transcription can be divided into three main stages, each involving distinct DNA sequences to guide the polymerase. These are:
29.4K
RNA Polymerase II Accessory Proteins
9.5K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
9.5K


