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関連する概念動画

Protein Transport to the Inner Chloroplast Membrane01:18

Protein Transport to the Inner Chloroplast Membrane

1.7K
Proteins targeted to the inner chloroplast membrane, or plastid proteins, are transported by two general pathways: the stop-transfer and the re-insertion or post-import pathways. Most plastid proteins carry N-terminal transit sequences and internal import sequences targeting it to the specific chloroplast subcompartment. Proteins targeted by the stop-transfer pathway have internal hydrophobic sequences that inhibit their translocation into the stroma. As a result, these precursors are arrested...
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Protein Transport into the Inner Mitochondrial Membrane01:34

Protein Transport into the Inner Mitochondrial Membrane

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Nuclear encoded mitochondrial precursors are imported to the inner membrane in a multistep process involving two separate translocons, TIM22 and TIM23. TIM23 is a cation-selective pore that remains closed by the N terminal segment of the protein. Negative charges on the TIM23 act as a receptor for the incoming precursor, pulling the positively charged matrix-targeting sequence for peptide insertion and translocation.
Transport of mitochondrial precursors across the TIM23 channel is driven by...
3.5K
Insertion of Single-pass Transmembrane Proteins in the RER01:26

Insertion of Single-pass Transmembrane Proteins in the RER

13.0K
Integral membrane proteins are proteins adhered to the lipid bilayer of a cell organelle or membrane. They can be of two types: transmembrane integral proteins that span the lipid bilayer and monotopic proteins that are attached to either side of the membrane but do not pass through it.
Integral transmembrane proteins possess transmembrane and extra membrane domains. The transmembrane domains are primarily made of 20-25 hydrophobic amino acids arranged in a helical secondary confirmation. These...
13.0K
Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

8.8K
Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
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Insertion of Multi-pass Transmembrane Proteins in the RER01:29

Insertion of Multi-pass Transmembrane Proteins in the RER

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The rough ER membrane synthesizes, assembles, and embeds transmembrane proteins in diverse topologies. These proteins function as transporters or channels and can remain in the ER membrane or are sent to the Golgi complex, lysosome, and cell membrane.
The multipass transmembrane proteins are the type IV integral membrane proteins with multiple topogenic sequences determining their spatial arrangement in the ER membrane. Nearly all multipass proteins lack a cleavable signal sequence and use...
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Protein Transport to the Thylakoids01:22

Protein Transport to the Thylakoids

2.2K
Thylakoids are membrane-bound sac-like structures within the chloroplast that serve as sites for photosynthesis. Thylakoid lumen contains many electron transport proteins and is enclosed by a thylakoid membrane rich in the light-harvesting complex. Proteins targeted to the thylakoids are transported as precursors and are sorted by the general TOC/TIC import pathway. Once the precursor reaches the stroma, stromal processing peptidases remove their transit signal and expose thylakoid signal...
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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor
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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor

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1D TiS2 ((en) チェーンにリイのインターキャレーション.

Tianyang Li1, Yi-Hsin Liu, Basant Chitara

  • 1Department of Chemistry and Biochemistry, The Ohio State University , Columbus, Ohio 43210, United States.

Journal of the American Chemical Society
|February 14, 2014
PubMed
まとめ
この要約は機械生成です。

リチウムの可逆的なインターカレーションは,1Dバンダーワールズ固体,TiS2 (((エチレンダイアミン)) で達成されました. このプロセスは,電子を注入することにより,電気抵抗性を大幅に低下させ,材料の性質を調整する新しい方法を提供します.

さらに関連する動画

A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins

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Single-Molecule Imaging of Lateral Mobility and Ion Channel Activity in Lipid Bilayers using Total Internal Reflection Fluorescence TIRF Microscopy
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Single-Molecule Imaging of Lateral Mobility and Ion Channel Activity in Lipid Bilayers using Total Internal Reflection Fluorescence TIRF Microscopy

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関連する実験動画

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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor
07:20

Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor

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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins

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Single-Molecule Imaging of Lateral Mobility and Ion Channel Activity in Lipid Bilayers using Total Internal Reflection Fluorescence TIRF Microscopy
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Single-Molecule Imaging of Lateral Mobility and Ion Channel Activity in Lipid Bilayers using Total Internal Reflection Fluorescence TIRF Microscopy

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科学分野:

  • マテリアルサイエンス 材料科学
  • 固体化学 固体化学
  • 凝縮物質物理学 凝縮物質物理学

背景:

  • 金属カチオンを二次元層状の材料に挿入すると,ユニークな電子,磁気,および相関特性が得られます.
  • 低次元 (1D,2D) の材料におけるインターカレーションの探求は,新しい機能性を発見する上で極めて重要です.

研究 の 目的:

  • 1D ヴァン・デル・ワールズの固体,TiS2 (エチレンダイアミン) でのリチウムインターカレーションの実現可能性と効果を調査する.
  • リバーシブル・インターカレーションを通じて,次元的に縮小された材料の物理的特性を調節する可能性を探求する.

主な方法:

  • ハイブリッドの有機/無機1Dヴァン・デル・ワールズの固体TiS2 ((エチレン・ダイアミン)) の合成.
  • TiS2 (エチレンダイアミン) 格子へのリバーシブルなリチウム (Li) インターカレーションの実験的実証.
  • Liのインターケレーションによる電気抵抗力の変化の測定.

主要な成果:

  • TiS2 ((エチレンジアミン)) で実証されたリバーシブルなリチウムインターキャレーションの成功.
  • インターケレーションにより,Ti(4+) がTi(3+) に還元され,電子が格子に注入されます.
  • インターケレーション後,電磁抵抗の有意な,数度の減少が観察されました.

結論:

  • リバーシブルなLiインターキャレーションは,TiS2 (((エチレンダイアミン)) のような1Dヴァン・デル・ワールズの固体で達成可能である.
  • このプロセスは,電子特性,特に電気抵抗性を調節するための実行可能な経路を提供します.
  • この発見は,新興の縮小材料におけるプロパティ・チューニングの道を開いている.