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関連する概念動画

Lytic Cycle of Bacteriophages01:30

Lytic Cycle of Bacteriophages

Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the lytic replication...
Lysogenic Cycle of Bacteriophages00:43

Lysogenic Cycle of Bacteriophages

In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
Size and Structure of Viral Genomes01:26

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
DNA Bacteriophages01:26

DNA Bacteriophages

Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
Evolution of Microbial Genome01:08

Evolution of Microbial Genome

Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
Bacteriophages of the Human Virome01:23

Bacteriophages of the Human Virome

Bacteriophages are found throughout the human body. They may even outnumber eukaryotic viruses, forming an important and dynamic component of the human virome. Indeed, phages represent the most abundant viral entities, with densities in the gut reaching up to 10⁹ particles per gram of fecal matter, and many belonging to orders such as Caudovirales and Microviridae, while a substantial proportion remains unclassified as viral “dark matter.”Lysogeny and Genetic ExchangeIn the gut, bacteriophages...

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関連する実験動画

Updated: Jun 23, 2026

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'
08:31

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'

Published on: May 26, 2013

ファージゲノミクス:小さいことは美しい.

Harald Brüssow1, Roger W Hendrix

  • 1Nestlé Research Center, Nestec Ltd., Vers-chez-les-Blanc, CH-1000 26 Lausanne, Switzerland. harald.bruessow@rdls.nestle.com

Cell
|January 17, 2002
PubMed
まとめ
この要約は機械生成です。

ゲノミクスの時代は,バクテリオファージの研究に革命を起こしています. 多くのファグゲノムを一緒に分析することで,科学者は前例のない解像度でグローバルなファグ集団の構造,動態,進化を調査することができます.

さらに関連する動画

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
09:40

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

Published on: June 11, 2015

Understanding the Impact of Temperate Bacteriophages on Their Lysogens Through Transcriptomics
09:23

Understanding the Impact of Temperate Bacteriophages on Their Lysogens Through Transcriptomics

Published on: January 5, 2024

関連する実験動画

Last Updated: Jun 23, 2026

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'
08:31

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'

Published on: May 26, 2013

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
09:40

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

Published on: June 11, 2015

Understanding the Impact of Temperate Bacteriophages on Their Lysogens Through Transcriptomics
09:23

Understanding the Impact of Temperate Bacteriophages on Their Lysogens Through Transcriptomics

Published on: January 5, 2024

科学分野:

  • 微生物学 微生物学とは
  • ゲノミクスゲノミクスとは
  • バイオインフォマティックス

背景:

  • バクテリオファージのゲノムシーケンシングは,1970年代以降,著しく進歩しました.
  • 現在,100以上の完全な細菌ゲノムが利用可能であり,近い将来数千のゲノムが利用される見込みです.
  • 個々のファグゲノムが洞察を提供しますが,それらを集団的に分析することはより大きな可能性を秘めています.

研究 の 目的:

  • 大量のシーケンシングデータを活用して,バクテリオファージの集団を全面的に理解する.
  • 全ゲノム解析を用いてファグ集団の構造,動態,進化に関する根本的な疑問に取り組む.
  • バクテリオファージの研究における大規模な比較ゲノミクスの基礎を確立する.

主な方法:

  • バクテリオファージゲノムの高通量シーケンシング.
  • ファージ配列の大規模なデータセットの比較ゲノム分析.
  • 集団遺伝学のアプローチは,全ゲノムデータに適用されます.

主要な成果:

  • この研究は,100以上の完全なファグゲノムを分析することを可能にします.
  • 将来の展望には,何千ものファグゲノムの分析が含まれています.
  • このアプローチにより,全ゲノム解像度でファグ集団の研究が可能です.

結論:

  • バクテリオファージゲノムの比較ゲノミクスは,今や大規模で実現可能だ.
  • この方法論は,ファグ集団の生物学に関する新しい洞察を開くでしょう.
  • この分野は,ファグの進化と生態学を理解する上で大きな進歩を遂げようとしています.