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相关概念视频

What is Gene Expression?01:42

What is Gene Expression?

Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
What is Gene Expression?01:42

What is Gene Expression?

Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Epistasis Analysis01:09

Epistasis Analysis

Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
What is Gene Expression?01:36

What is Gene Expression?

A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...
Structure of a Gene01:30

Structure of a Gene

A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
Constitutive and Regulated Gene Expression01:27

Constitutive and Regulated Gene Expression

Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...

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相关实验视频

Updated: Jul 1, 2026

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
10:17

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations

Published on: November 3, 2010

基因语法调节了等离子体上的基因表达和电路行为.

Yijie Deng1, Hannah E Maurais2, Kai Etheridge2

  • 1Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, USA. Yijie.deng@dartmouth.edu.

Journal of biological engineering
|March 28, 2025
PubMed
概括
此摘要是机器生成的。

质粒基因排列,或基因合成,显著影响基因表达的一致性和准确性. 了解基因语法对于设计可预测的遗传电路和质粒至关重要.

关键词:
基因噪声是一种基因噪声.基因语法 基因语法基因电路的基因.遗传背景 遗传背景不连贯的前循环.等离子体的设计.

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Reliably Engineering and Controlling Stable Optogenetic Gene Circuits in Mammalian Cells
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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins

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相关实验视频

Last Updated: Jul 1, 2026

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
10:17

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations

Published on: November 3, 2010

Reliably Engineering and Controlling Stable Optogenetic Gene Circuits in Mammalian Cells
09:20

Reliably Engineering and Controlling Stable Optogenetic Gene Circuits in Mammalian Cells

Published on: July 6, 2021

Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins
10:46

Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins

Published on: October 18, 2022

科学领域:

  • 合成生物学 合成生物学
  • 分子生物学分子生物学
  • 基因工程是一种基因工程.

背景情况:

  • 从质粒中得到一致的基因表达是生物技术中持续存在的挑战.
  • 像促进体这样的基因内元素得到了很好的研究,但基因排列 (基因语法) 效应的理解较少.

研究的目的:

  • 研究基因合成对基因表达变异性和精度的影响.
  • 阐明基因定向和顺序如何影响表达水平,比率和噪音.

主要方法:

  • 利用双光蛋白系统 (GFP和RFP) 来量化基因表达.
  • 系统地改变了等离子体上的基因定向和顺序,以评估表达特征.
  • 分析了平均表达水平,相对表达比率和细胞对细胞的变化.

主要成果:

  • 基因放置显著改变表达手段和比率;与复制起源 (Ori) 的相同方向对齐增加了表达.
  • 不同的基因取向可以导致相互抑制;改变的基因顺序会影响表达,即使没有取向变化.
  • 基因合成影响内在和外在的噪音,记者蛋白选择 (例如,RFP与GFP) 影响变异.

结论:

  • 基因语法是一个关键的,被忽视的因素调节等离子体基因表达和遗传电路行为.
  • 塑体和遗传电路的合理设计必须考虑基因排列,以获得可预测的结果.
  • 研究结果为设计更强大,更可控的遗传系统提供了洞察力.