関連する実験動画

Updated: May 2, 2026

Encapsulating Cytochrome c in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity

Encapsulating Cytochrome c in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity

Published on: March 1, 2016

合成の非酸化性グリコリシスは,完全な炭素保存を可能にします

Igor W Bogorad¹, Tzu-Shyang Lin, James C Liao

¹1] Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, USA. [2] Departments of Bioengineering and of Chemical and Biomolecular Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, USA.

|October 1, 2013

まとめ

私たちは,糖から炭素の損失を防ぐ新しい代謝経路である非酸化性甘解 (NOG) を開発しました. このイノベーションにより,価値ある化学物質や燃料を生産するための完全な炭素保存が可能になります.

科学分野:

メタボリックエンジニアリング
合成生物学合成生物学とは
バイオケミストリーバイオケミストリー

背景:

糖分解は,ほとんどの生物で糖分分解のための基本的な代謝経路です.
固有のグリコリチス経路は,ピルバートのデカルボキシル化中に炭素の損失をもたらし,貴重なC2代謝産物の産量を制限します.
この炭素の損失は,バイオ精製と微生物生産における大きな課題です.

研究の目的:

糖の分解過程で完全な炭素保存のための新しい代謝経路の設計と構築.
グライコリシスにおけるピルバートのデカルボキシル化に関連した炭素の損失を排除するために.
さまざまな糖質のリン酸からC2代謝物のステキオメトリック生成を可能にする.

主な方法:

非酸化性,循環性代謝経路 (NOG) を設計・構築しました.
Escherichia coli. を使用してNOG経路をin vitroおよびin vivoでテストしました.
評価された炭素収量と代謝産物生産効率.

主要な成果:

NOG経路は,炭素の損失なしに,ヘキソス,ペントス,トリオスリン酸からC2代謝物のステキオメトリック生成を可能にします.
糖分をアセチル-コアに分解する過程で完全な炭素保存が実証されています.
NOGがC1の同化経路と組み合わせた場合,燃料や化学物質の高収量生産のための潜在能力を示しました.

結論:

非酸化性グリコリシス (NOG) は,砂糖の代謝における炭素の損失に対する解決策を提供します.
NOGは,砂糖から貴重な化合物を生産するために100%の炭素収量を可能にします.
この経路は,持続可能なバイオ精製と化学合成に重大な影響を及ぼします.

さらに関連する動画

Achieving Moderate Pressures in Sealed Vessels Using Dry Ice As a Solid CO2 Source

Achieving Moderate Pressures in Sealed Vessels Using Dry Ice As a Solid CO2 Source

Published on: August 17, 2018

Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture

Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture

Published on: September 29, 2023

関連する概念動画

Carbon Skeletons

Carbon Skeletons

Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...

Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids

Loss of Carboxy Group as CO₂: Decarboxylation of β-Ketoacids

Carboxylic acids, upon heating, undergo a decarboxylation reaction by releasing carbon dioxide gas. Monocarboxylic acids do not undergo decarboxylation easily. However, a silver salt of carboxylic acid reacts with bromine or iodine under high temperature to release carbon dioxide gas and forms halide with one less carbon. This reaction is called the Hunsdiecker reaction.

Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents

Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents

Carboxylic acids can be prepared by the carboxylation of Grignard reagents (RMgX). This method is convenient for converting alkyl (primary, secondary or tertiary), vinyl, benzyl, and aryl halides to carboxylic acids with one additional carbon than the starting RMgX.

Loss of Carboxy Group as CO2: Decarboxylation of Malonic Acid Derivatives

Loss of Carboxy Group as CO₂: Decarboxylation of Malonic Acid Derivatives

Just like β-keto acids—which upon thermal decarboxylation form ketones—β-dicarboxylic acids undergo decarboxylation to generate monocarboxylic acids with the liberation of carbon dioxide.

Carbonation Shrinkage

Carbonation Shrinkage

Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...

Carbon-dioxide Fixation

Carbon-dioxide Fixation

Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...