相关实验视频

Updated: Mar 16, 2026

Determination of S-Phase Duration Using 5-Ethynyl-2'-deoxyuridine Incorporation in Saccharomyces cerevisiae

Determination of S-Phase Duration Using 5-Ethynyl-2'-deoxyuridine Incorporation in Saccharomyces cerevisiae

Published on: October 21, 2022

在Streptomyces子发芽过程中,SMC确保了高效的染色体复制和oriC定位

Katarzyna Pawlikiewicz¹, Agnieszka Strzałka¹, Agnieszka Nurek^1,2

¹Department of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.

Scientific reports

|March 15, 2026

概括

染色体结构维护 (SMC) 蛋白质对于细菌染色体组织至关重要. 在Streptomyces中删除SMC基因会破坏核状结构,影响DNA复制和发育.

科学领域:

微生物学微生物学
分子生物学分子生物学
遗传学遗传学是一个

背景情况:

细菌染色体组织对于细胞过程至关重要.
染色体结构维护 (SMC) 蛋白质在DNA紧缩和分离中发挥着关键作用.
在Streptomyces中,SMC蛋白对于子形成期间的DNA组织至关重要.

研究的目的:

为了研究SMC蛋白在Streptomyces核状结构中的作用.
为了确定SMC基因删除对染色体复制和发芽的影响.
分析复制起源 (oriC) 和其他染色体位点在Δsmc突变者的位置.

主要方法:

进行标记器频率分析以评估染色体复制.
使用显微镜研究可视化oriC和replisomes的位置.
在野生型和 Δsmc Streptomyces 菌株中检查了染色体位置位置.

主要成果:

删除smc基因会损害Streptomyces的染色体复制.
在缺乏SMC蛋白质的Streptomyces中,生殖管的发育受到阻碍.
在没有SMC的情况下,oriC区域在核体内位置错误.

结论:

在Streptomyces中,SMC蛋白对于维持正确的核状结构至关重要.
干扰SMC功能会影响早期生长阶段,包括DNA复制和发芽.
在植物生长过程中,SMC蛋白对oriC区域的正确定位至关重要.

关键词:

细菌染色体组织的细菌染色体复制是染色体的复制.凝聚物凝聚物凝聚物子的发芽子的发芽

更多相关视频

Efficient Sporulation of Saccharomyces cerevisiae in a 96 Multiwell Format

Efficient Sporulation of Saccharomyces cerevisiae in a 96 Multiwell Format

Published on: September 17, 2016

A high-throughput method to globally study the organelle morphology in S. cerevisiae

A high-throughput method to globally study the organelle morphology in S. cerevisiae

Published on: March 2, 2009

相关概念视频

S-Cdk Initiates DNA Replication

S-Cdk Initiates DNA Replication

The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle progresses in four stages—the cell increases in size (gap 1 or G1-phase), duplicates its DNA (synthesis or S-phase), prepares to divide (gap 2 or G2-phase), and divides (mitosis or M-phase).
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of...

S-Cdk Initiates DNA Replication

S-Cdk Initiates DNA Replication

Replication in Prokaryotes

Replication in Prokaryotes

DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
Replication is coordinated and carried out by a host of specialized...

Replication in Prokaryotes

Replication in Prokaryotes

Replication in Prokaryotes

Replication in Prokaryotes

Conservative Site-specific Recombination and Phase Variation

Conservative Site-specific Recombination and Phase Variation

Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...