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関連する概念動画

Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
Phosphodiester Linkages01:01

Phosphodiester Linkages

Overview
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...
Ions as Acids and Bases02:54

Ions as Acids and Bases

Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
Polyprotic Acids03:38

Polyprotic Acids

Acids are classified by the number of protons per molecule that they can give up in a reaction. Acids such as HCl, HNO3, and HCN that contain one ionizable hydrogen atom in each molecule are called monoprotic acids. Their reactions with water are:
IP3/DAG Signaling Pathway01:11

IP3/DAG Signaling Pathway

Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the  phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and produces two-second...

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関連する実験動画

Updated: Jun 28, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

Published on: November 22, 2016

2,3-ディフォスフィノ-1,4-ディフォスフォニウムイオン

Yuen-ying Carpenter1, C Adam Dyker, Neil Burford

  • 1Department of Chemistry, Dalhousie University, Halifax, NS, B3H 4J3, Canada.

Journal of the American Chemical Society
|October 23, 2008
PubMed
まとめ

研究者らは,新しいクロロフォスフィノフォスフォニウム塩を合成し,最初の非循環型ディフォスフィノ-ディフォスフォニウムイオンに至った. この画期的な発見は,ケテナ-リン化学を進歩させ,新しい結合の洞察を明らかにします.

科学分野:

  • 無機化学 無機化学とは
  • オーガノフォスファルス 化学 化学
  • 材料科学 材料科学とは

背景:

  • リン化学は,ユニークな結合と構造を調査します.
  • P-P結合を特徴とするケテナ-リン化合物は,新しい材料や触媒の開発に不可欠です.
  • ポリフォスファルカチオンの合成と性質を理解することは,継続的な課題です.

研究 の 目的:

  • 結晶学的に定義された最初のクロロフォスフィノフォスフォニウム塩を合成し,特徴づけること.
  • これらの塩の還元結合を研究し,新しい非循環型ディホスフィノ-ディホスフォニウムイオンを形成する.
  • これらの新しいリン基のフレームワークの結合と反応性を調査する.

主な方法:

  • クロロフォスフィノフォスフォニウム塩の製造と結晶学的な特徴付け.
  • 還元結合反応は,三次フォスフィン (例えば,Ph3P) によるものです.
  • ディクロロフォスフィン,三次フォスフィン,トリメチルシリルトリフローロメタン硫酸塩を使用したワンポット・ディアステロセレクティブ合成.
  • スペクトル分析 (NMRなど) そして,コンピューティング研究.

主要な成果:

  • 結晶学的に特徴づけられた最初のクロロフォスフィノフォスフォニウム塩の合成が成功しました.

さらに関連する動画

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants
12:06

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants

Published on: October 19, 2017

A Liposome Membrane Permeability Assay for Investigating the Effects of Phosphatidylinositol Phosphate Groups on Membranotropic Action of Venom PLA2
10:31

A Liposome Membrane Permeability Assay for Investigating the Effects of Phosphatidylinositol Phosphate Groups on Membranotropic Action of Venom PLA2

Published on: September 26, 2025

関連する実験動画

Last Updated: Jun 28, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

Published on: November 22, 2016

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants
12:06

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants

Published on: October 19, 2017

A Liposome Membrane Permeability Assay for Investigating the Effects of Phosphatidylinositol Phosphate Groups on Membranotropic Action of Venom PLA2
10:31

A Liposome Membrane Permeability Assay for Investigating the Effects of Phosphatidylinositol Phosphate Groups on Membranotropic Action of Venom PLA2

Published on: September 26, 2025

  • 還元結合による最初の非循環的2,3-二ホスフィノ-1,4-二ホスフォニウムイオンの形成.
  • 一般的な式 [R3P-PR'-PR'-PR3][OTf]2.2.の新しい塩の特性について
  • 量的なリガンド交換の実証,フォスフィン・フォスフォニウム系におけるP-P結合の協調性を強調する.
  • 計算方法を用いた固体構造の解釈.

    • 結論:

    • この研究は,ケテナ-リン化学の重要な進歩を示しています.
    • 新しく合成されたディフォスフィノ-ディフォスフォニウムイオンは,将来の研究のための重要な枠組みを表しています.
    • この発見は,が豊富なカチオンの結合モデルとそれらの協調化学に関する重要な洞察を提供します.