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相关概念视频

Proteins: From Genes to Degradation02:11

Proteins: From Genes to Degradation

14.5K
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
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Tagging and Fusion Proteins01:24

Tagging and Fusion Proteins

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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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Gene Flow02:39

Gene Flow

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Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
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Gene Families01:57

Gene Families

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Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
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Gene Therapy00:59

Gene Therapy

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Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
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Gene Conversion02:08

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Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
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Updated: Feb 7, 2026

High-throughput Gene Tagging in Trypanosoma brucei
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High-throughput Gene Tagging in Trypanosoma brucei

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在C.中模块基因标记. 伊莱根斯 (elegans) 是一个词.

Adam Hefel, Kevin Kruse, Kaden Wall

    bioRxiv : the preprint server for biology
    |February 6, 2026
    PubMed
    概括
    此摘要是机器生成的。

    我们介绍了PhIT,一种基于重组酶的方法,用于精确标记C. elegans中的蛋白质. 该系统克服了CRISPR的局限性,实现了模块化和无错误的基因标记,以改善蛋白质定位和表达研究.

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    Standardized Modular Assembly of Polycistronic Operons with Modular Cloning (MoClo) using the In-Cloning toolkit
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    Standardized Modular Assembly of Polycistronic Operons with Modular Cloning (MoClo) using the In-Cloning toolkit
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    Basic Caenorhabditis elegans Methods: Synchronization and Observation
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    Basic Caenorhabditis elegans Methods: Synchronization and Observation

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    科学领域:

    • 分子生物学分子生物学
    • 遗传学 遗传学 是一个
    • 发展生物学 发展生物学

    背景情况:

    • 内源基因标记对于研究蛋白质表达和定位至关重要.
    • 虽然CRISPR技术被广泛使用,但由于错误和试剂特异性,它存在挑战.
    • 再组合酶系统为无误和模块化DNA插入提供了潜在的解决方案.

    研究的目的:

    • 评估C. elegans. 中的生殖线重组酶功能的评估.
    • 开发和引入PhIT,一种基于重组酶的新型蛋白质标记系统.
    • 建立一个模块化基因和蛋白质标记的多功能平台.

    主要方法:

    • 在C. elegans中选了八个重组酶的生殖基因活性.
    • 利用CRISPR将一个PhiC31 attB着陆台插入目标基因位置.
    • 采用PhiC31整合酶用于标签插入,以及铁素重组酶用于骨干去除.

    主要成果:

    • 证明了PhIT在C. elegans中无错误,模块化蛋白质标记的有效性.
    • 通过CRISPR开发了一个可用于多功能标签插入的资源菌株.
    • 成功实施了各种模块化标签,包括光蛋白,FLP调控结构和降解标签.

    结论:

    • PhIT为内源基因标记提供了一个强大的,模块化的CRISPR替代方案.
    • 该系统通过基因交叉促进了标签插入,简化了实验工作流程.
    • PhIT增强了对C. elegans.中的基因表达和蛋白质定位的研究.