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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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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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Phase II Reactions: Glutathione Conjugation and Mercapturic Acid Formation01:22

Phase II Reactions: Glutathione Conjugation and Mercapturic Acid Formation

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Glutathione, a tripeptide made up of glutamate, cysteine, and glycine, is a critical player in the detoxification of drugs and xenobiotics via a process known as glutathione conjugation or mercapturic acid formation. This phase II biotransformation reaction involves the covalent binding of glutathione to a drug or its metabolite, enhancing the compound's water solubility and enabling its excretion.
Several distinctive characteristics distinguish glutathione conjugation from other phase II...
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Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

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Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
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Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

3.0K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
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Nitrosation of Enols01:19

Nitrosation of Enols

2.8K
The nitrosation reaction is one of the methods of preparing 1,2-diketones. The enol tautomer of the starting ketone reacts with sodium nitrite in hydrochloric acid, generating the 1,2-diketone after hydrolysis.
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卵醇是一种含有的抗氧化剂,来源于融合进化过程.

Chase M Kayrouz1, Kendra A Ireland2, Vanessa Ying1

  • 1Department of Chemistry, Princeton University, Princeton, NJ 08544, United States.

bioRxiv : the preprint server for biology
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概括

研究人员发现了一条用于制造含分子的新途径. 这导致了新型抗氧化剂ovoselenol的鉴定,扩大了我们对代谢物的理解.

科学领域:

  • 生物化学 生物化学
  • 代谢学 代谢学 代谢学
  • 酶学 是一种酶学.

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背景情况:

  • 是一种必不可少的微量营养素,主要存在于蛋白质和核酸中.
  • 首个含有的小分子生物合成途径的发现表明了更广泛的,尚未探索的代谢物家族.
  • 微生物基代谢瘤在很大程度上仍然没有表征.

结论:

  • 阐明了新型代谢物,卵醇及其相关酶类的生物合成.
  • 提供了对金属酶的演化和C-Se键形成的结构基础的见解.
  • 建立了未来对微生物代谢组的探索和绘制的框架.