エナティオコンプリメンタリー腸内細菌酵素は食事中のポリフェノールを代謝する
Xueyang Dong1, Minwoo Bae1, Chi Le1
1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.
Journal of the American Chemical Society
|February 24, 2025
まとめ
腸内細菌
科学分野:
- 微生物学
- 生物化学
- 酵素学
背景:
- 腸内細菌は,モリブデン依存型カテキル脱酸化物を用いて植物ポリフェノルを代謝する.
- これらの酵素の基質を特定することは,発現の困難のために困難です.
研究 の 目的:
- 活性カテキル脱酸化酵素を発現させる細菌宿主を開発する.
- 特徴づけられていない脱酸化酵素の基質を特定し,植物ポリフェノール代謝におけるそれらの役割を理解する.
主な方法:
- 異種発現宿主としてGordonibacter urolithinfaciensを確立した.
- 以前は特徴づけられていなかった8つのカテキル脱酸化物を発現し,特徴づけました.
- エナンチオセレクティブ性を含む基板特異性を調査した.
主要な成果:
- G. urolithinfaciens*で活性カテキル脱酸化酵素を成功裏に発現した.
- カテキンとリグナンの代謝に関与する8つの酵素の基板が特定された.
- 特定の基質同位体に対する進化したエナチオ選択性を持つ酵素を発見した.
結論:
- *Gordonibacter urolithinfaciens*は,カテキル脱酸化酵素の発見のための多用途の宿主である.
- この研究は,ポリフェノルの代謝における腸内細菌のデヒドロキシラーゼの既知の機能を拡張する.
- ヒトの健康に関連する酵素の進化と植物化学的変異についての洞察を 提供しています
さらに関連する動画
関連する概念動画
01:02Protein Digestion
102.4K
Protein digestion begins in the stomach, where the highly acidic environment can easily disrupt protein structure by exposing the peptide bonds of polypeptide chains. After polypeptide chains are broken into individual amino acids by a series of digestive enzymes, the amino acids are transported to the liver via the bloodstream to produce energy.
102.4K
01:24Peroxisomes
9.4K
Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
9.4K
01:06Lipid Digestion
90.5K
Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
90.5K
01:40Overview of Metabolism
29.4K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
29.4K
01:29Bacterial Flora of the Large Intestine
373
The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
373
01:14Drug Metabolism: Phase II Reactions
3.5K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
3.5K