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関連する概念動画

Membrane Carbohydrates01:30

Membrane Carbohydrates

The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Membrane Carbohydrates01:30

Membrane Carbohydrates

The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.

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関連する実験動画

Updated: Jul 10, 2026

Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase
11:01

Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase

Published on: November 23, 2016

核酸アプタマーによる適応認識

T Hermann1, D J Patel

  • 1Cellular Biochemistry and Biophysics Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA. thermann@sbnmr1.ski.mskcc.org

Science (New York, N.Y.)
|February 5, 2000
PubMed
まとめ
この要約は機械生成です。

核酸アプタマーは,特定の分子に高親密度で結合するために選択されます. 構造研究は,スタッキング,水素結合,形状の互換性などの重要な相互作用を明らかにし,細胞認識イベントを反映しています.

さらに関連する動画

Visual Detection of Multiple Nucleic Acids in a Capillary Array
08:56

Visual Detection of Multiple Nucleic Acids in a Capillary Array

Published on: November 15, 2017

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood
07:20

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood

Published on: January 9, 2018

関連する実験動画

Last Updated: Jul 10, 2026

Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase
11:01

Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase

Published on: November 23, 2016

Visual Detection of Multiple Nucleic Acids in a Capillary Array
08:56

Visual Detection of Multiple Nucleic Acids in a Capillary Array

Published on: November 15, 2017

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood
07:20

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood

Published on: January 9, 2018

科学分野:

  • 分子生物学は分子生物学である.
  • バイオケミストリー バイオケミストリー
  • 構造生物学 構造生物学とは

背景:

  • 核酸は遺伝情報の処理に不可欠である.
  • アプタマーとは,特定のリガンド結合のために選択された核酸配列である.
  • アプタマー-リガンドの相互作用を理解することは,生物学的認識の鍵です.

研究 の 目的:

  • アプタマー-リガンド特異性の構造的基礎を解明する.
  • アプタマー結合を推進する重要な分子相互作用を特定するために.
  • アプタマー認識原理と細胞核酸の相互作用を比較する.

主な方法:

  • ランダムシーケンスのライブラリからアプタマーのインビトロ選択.
  • アプタマー-リガンド複合体の高解像度3次元構造決定.
  • 決定された構造内の分子相互作用の分析.

主要な成果:

  • アプタマーとターゲットリガンドの高親和性および特異的結合が確認されました.
  • 詳細な構造は,特定の分子相互作用を明らかにします:積み重ね,水素結合,形状の互補性.
  • これらの相互作用は,アプタマー-リガンド結合の特異性にとって極めて重要です.

結論:

  • 構造的な洞察は,アプタマー-リガンド結合の高特異性を説明する.
  • アプタマー認識を制御する原理は,核酸を含む基本的な細胞分子認識イベントに類似しています.