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関連する概念動画

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein.
Transduction01:16

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome are...
Bacterial Protein Maturation01:26

Bacterial Protein Maturation

Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
Translational Regulation01:29

Translational Regulation

Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
Protein Modifications in the RER01:26

Protein Modifications in the RER

Modification of secretory and transmembrane proteins entering the rough ER begins in the ER lumen. These modifications aid in protein folding and stabilize the acquired tertiary structure. Protein modifications in the rough ER co-occur at different stages of protein folding.
Broadly, these modifications can be categorized into four main categories — glycosylation, formation of disulfide bonds, assembly of protein subunits, and specific proteolytic cleavages like removal of signal sequences.
Leaky Scanning02:28

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...

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Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins
08:12

Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins

Published on: January 8, 2018

病原体媒介の翻訳後の改変: 再出現する分野

David Ribet1, Pascale Cossart

  • 1Institut Pasteur, Département de Biologie Cellulaire et Infection, Paris, France.

Cell
|November 30, 2010
PubMed
まとめ
この要約は機械生成です。

病原体は,NF-kBとMAPキナーゼのような宿主細胞のシグナル伝達経路を操作するために,翻訳後の修正を使用し,生存と拡散を助けます. これらのメカニズムを理解することは,新しい抗感染療法を開発する上で極めて重要です.

さらに関連する動画

Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications
09:29

Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications

Published on: May 18, 2017

関連する実験動画

Last Updated: Jun 6, 2026

Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins
08:12

Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins

Published on: January 8, 2018

Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications
09:29

Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications

Published on: May 18, 2017

科学分野:

  • 微生物学 微生物学とは
  • 免疫学 免疫学とは
  • 分子生物学は分子生物学である.

背景:

  • 病原体は,宿主の防御を克服するために洗練された戦略を採用します.
  • 翻訳後の改変 (PTM) は,細胞プロセスにおける重要な分子イベントである.

研究 の 目的:

  • 宿主細胞のシグナル伝達操作における病原体由来PTMの役割を強調する.
  • 感染,複製,免疫回避におけるPTMの重要性を強調する.

主な方法:

  • 病原体PTMと宿主経路相互作用に関する最近の研究のレビュー.
  • PTMがキーホストのシグナリングカスケードをどのようにターゲットにするかについての分析.

主要な成果:

  • 病原体はPTMを利用して,感染に不可欠な宿主因子を効果的に調節します.
  • 病原体PTMによるNF-kBとMAPキナーゼ経路の特定のターゲティングが実証されています.
  • PTMは,病原体の複製,増殖,免疫回避に不可欠であることが示されています.

結論:

  • 病原体媒介のPTMは,宿主の免疫を破壊する重要なメカニズムです.
  • これらの発見は,病原体と宿主の相互作用に関する新しい洞察を提供します.
  • PTMに関するさらなる研究は,感染症に対する革新的な治療戦略の開発につながる可能性があります.