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相关概念视频

Ligand Binding and Linkage00:49

Ligand Binding and Linkage

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Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

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The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
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Ligand Binding Sites02:40

Ligand Binding Sites

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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Structure of Cadherins01:25

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The cadherins were one of the first cell adhesion molecules discovered; the term “cadherins”   is based on their calcium-dependent adhering properties. The first cadherins discovered on the epithelial, neuronal, and placental cells were named E-cadherin, P-cadherin, and N-cadherin, respectively. These classical cadherins share sequence and structural similarities. Other cadherins, including those involved in cell signaling, are grouped into non-classical cadherins. This...
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Allosteric Proteins-ATCase01:19

Allosteric Proteins-ATCase

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Binding sites linkages can regulate a protein's function.  For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to  N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
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洞察catechin-铜复合结构和生物活动调制的洞察力.

Ionut I Lungu1, Oana Cioanca1, Cornelia Mircea1

  • 1Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iasi, Romania.

Molecules (Basel, Switzerland)
|October 26, 2024
PubMed
概括
此摘要是机器生成的。

研究人员合成了一种具有显著抗氧化和酶抑制特性的新型甲基素-铜复合物. 这种天然化合物衍生物显示出各种治疗应用的潜力,包括抗微生物和抗糖尿病用途.

关键词:
它是一种抗菌药物,具有抗菌作用.抗氧化剂活性 抗氧化剂活性铜甲基因复合物 铜甲基因复合物

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科学领域:

  • 自然产品化学 自然产品化学
  • 协调化学 协调化学
  • 生物化学 生物化学

背景情况:

  • 植物衍生化合物具有显著的生物活性,包括抗氧化特性.
  • 自然化合物的生物活性可能受到环境因素和金属离子复合的影响.
  • katekins 是一类天然化合物,以其健康益处而闻名.

研究的目的:

  • 合成和优化一个甲基素-铜复合体.
  • 评估合成复合物的抗氧化剂,铁化和酶抑制活性.
  • 评估甲基素-铜复合物的抗微生物和抗真菌潜力.

主要方法:

  • 素-铜复合物的合成.
  • 福利埃变换红外光谱 (FT-IR) 用于复杂的表征.
  • 在体外测定抗氧化活性 (铁化,基清除),酶抑制 (15-氧化酶,α-氨酶,α-葡萄糖酶),抗菌和抗真菌活性.

主要成果:

  • 成功合成和FT-IR确认了甲基素-铜复合体.
  • 该复合物表现出显著的抗氧化活性,包括铁化和基基清除.
  • 观察到显著的15-氧化酶,α-氨酶和α-葡萄糖酶的抑制,相当于纯粹的catechin.
  • 该复合物表现出对黄金葡萄球菌的抗菌活性,以及对白 Candida 的抗真菌活性.

结论:

  • 合成的甲基素-铜复合物是一种有前途的药物,具有多样化的生物活性.
  • 这种复合物具有治疗应用的潜力,特别是作为抗氧化剂,抗糖尿病剂和抗菌剂.
  • 金属复合可以增强或修改自然化合物的生物活性,如甲基素.