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Cofactors and Coenzymes01:24

Cofactors and Coenzymes

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Enzymes are proteins made of amino acids. The functional group of each constituent amino acid catalyzes a wide variety of chemical reactions via ionic interactions or acid-base reactions. However, amino acids cannot catalyze oxidation-reduction and group transfer reactions and need to be aided by non-protein components called cofactors. Cofactors are also referred to as the chemical teeth of an enzyme.
Cofactors can be metallic ions or organic molecules called coenzymes. These types of helper...
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Compounds Essential to Human Function01:25

Compounds Essential to Human Function

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The human body is composed of cells that are fundamentally made up of several different molecules. These molecules are essential to carry out all physiological processes in the body and are broadly classified into organic and inorganic based on their chemical structures.
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
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Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Pleiotropy01:33

Pleiotropy

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Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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Proteins: Dietary Sources and Requirements01:28

Proteins: Dietary Sources and Requirements

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Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
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Mitochondrial Precursor Proteins01:39

Mitochondrial Precursor Proteins

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Mitochondrial precursors are partially unfolded or loosely folded polypeptide chains. Newly synthesized precursors are inhibited from spontaneously folding into their native conformation by the cytosolic chaperones, heat shock proteins 70 (Hsp70), and mitochondrial import stimulation factors (MSFs). Precursors bound to MSFs are guided to the TOM70-TOM37 receptors, while precursors bound to Hsp70  chaperones are targetted to TOM20-TOM22 receptor complexes.
Most of the mitochondrial...
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Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
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進化のヒントは CoQ10 バイオフォリティフィケーションを解き放つ

Florian Hänsel1, Goetz Hensel2

  • 1Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Synthetic Microbiology, Düsseldorf, Germany; Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University Düsseldorf, Germany.

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PubMed
まとめ

コエンザイムQ (CoQ) は健康に不可欠ですが,構造の違いのために植物から補充することは困難です. この研究では,CoQレベルと栄養価を改善するために,エンジニアリング作物の進化目標が特定されました.

さらに関連する動画

Inner Mitochondrial Membrane Sensitivity to Na+ Reveals Partially Segmented Functional CoQ Pools
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Inner Mitochondrial Membrane Sensitivity to Na+ Reveals Partially Segmented Functional CoQ Pools

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Quantification of Coenzyme A in Cells and Tissues
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Quantification of Coenzyme A in Cells and Tissues

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関連する実験動画

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Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
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Quantification of Coenzyme A in Cells and Tissues
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科学分野:

  • 植物生物学
  • 栄養学
  • 進化生物学

背景:

  • コエンザイムQ (CoQ) はヒトの健康に不可欠であり,細胞呼吸において重要な抗酸化物質と電子伝達物質として作用する.
  • 食事による摂取は CoQ の重要な源ですが,植物の構造的な変化が有効な補給を制限しています.
  • 農作物のCoQレベルを高めることは,生物強化と公衆衛生を改善するための有望な戦略です.

研究 の 目的:

  • 様々な植物系におけるコエンザイムQの生物合成経路の進化的多様性を調査する.
  • これらの経路内の特定の遺伝的標的を特定し,作物のCoQ含有量を増加させるように設計することができます.
  • 進化的洞察を利用して作物の生物強化戦略を導くための枠組みを提供すること.

主な方法:

  • 多種多様な植物における CoQ 生物合成遺伝子の系統分析.
  • 比較ゲノミクスは,CoQ生産に関連する保存および分散領域を特定します.
  • CoQレベルに対する遺伝子変異の機能的影響を予測するバイオインフォマティックツール

主要な成果:

  • シュウと仲間たち 植物におけるコエンザイムQの多様化の進化史を追跡した.
  • 異なる植物群で 進化の特徴と 潜在的工学的標的が特定されました
  • この研究は,CoQ経路の進化の詳細な地図を提供し,主要な多様化イベントを強調しています.

結論:

  • 進化のシグネチャーは 植物の代謝経路を理解し 操作するための強力なツールです
  • 進化の洞察に基づく標的型遺伝子工学は,作物のCoQレベルを高めることができます.
  • この研究は,CoQの栄養を向上させるための生物強化作物の開発に道を開きます.