カルコフォミシン,銅 (II) メタロフォアの特徴 前例のない分子構造
Bang Gong1, Enhe Bai1, Xueqiong Feng1
1Xiangya International Academy of Translational Medicine at Central South University, Changsha, 410013, Hunan, China.
Journal of the American Chemical Society
|December 1, 2021
まとめ
研究者らは,銅イオン (Cu) を結合する新しい天然産物であるカルコフォミシンを発見した. そのユニークな構造は 神経退行性疾患や癌の 新しい治療法につながるかもしれません
科学分野:
- 自然製品化学
- バイオ有機化学
- 薬剤化学
背景:
- 金属は生物学的プロセスに 重要な役割を果たし バイオ分子との連携がしばしば行われます
- タンパク質における銅イオン (Cu(II)) 協調は理解されているが,天然製品におけるその役割は調査されていない.
- この知識のギャップは,Cu (II) の生物学的機能と治療の可能性の理解を制限しています.
研究 の 目的:
- 新しいCu (II) 結合天然製品を発見し,特徴づけること.
- これらの化合物の協調化学と構造を調査する.
- 医学における応用の可能性を探るため
主な方法:
- 微生物からの天然製品の分離と浄化 (Streptomyces sp. CB00271) に基づいている.
- スペクトロスコピック技術 (例えば,NMR,質量スペクトロメトリー) を用いた構造の解明.
- Cu ((II) の正確な座標幾何学を決定するX線結晶学.
主要な成果:
- カルコフォミシン (CHM,1) の発見,Streptomyces spからの新しい天然産物. CB00271 オーケストラ
- CHMは,ダイゼニウム二酸化物とピロール酸化物-オクサゾリンの部分を含む異常な非対称な正方形調整システムを示しています.
- この構造は,天然製品におけるCu (II) 結合の新しい方法を定義する.
結論:
- カルコフォミシンは,Cu (III) を結合する天然製品の一種である.
- 新しい治療剤を設計するための構造的なテンプレートを提供します.
- 潜在的応用には,神経変性疾患に対するCu (II) ケラターおよびCu (II) ベースの抗癌薬が含まれます.
さらに関連する動画
06:36Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
3.8K
11:04Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
Published on: September 7, 2019
9.4K
関連する概念動画
Chirality in Nature
14.6K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
14.6K
Extraction: Advanced Methods
568
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...
568
Complexation Equilibria: The Chelate Effect
725
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
725
Chirality
26.7K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
26.7K
Prochirality
4.1K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
4.1K
Archaeal Cell Wall
404
Archaeal cell walls are structurally and compositionally distinct from their bacterial counterparts, lacking the characteristic peptidoglycan layer found in most bacteria. Instead, archaeal cell walls exhibit remarkable diversity, utilizing materials such as pseudomurein, polysaccharides, and proteins to construct their protective outer layers. This structural flexibility is closely tied to archaea's ecological adaptability.S-Layers: The Common Archaeal Cell WallThe S-layer is the most...
404
