基于胆氨基酸的离子液体对血红蛋白稳定性和结构的影响
Kiran Devi Tulsiyan1,2, Mallika Rani Prusty3, Himansu S Biswal1,2
1School of Chemical Sciences, National Institute of Science Education and Research (NISER), Jatni, Khurda, Bhubaneswar, 752050, India.
概括
基于胆氨基酸的离子液体 (ChAAILs) 诱导了血红蛋白 (Hb) 的中间状态,提供了一个新的稳定策略. 这项研究探讨了CHAAILs作为稳定Hb尚未探索的中间形状的潜在剂.
科学领域:
- 生物化学 生化学
- 蛋白质稳定 蛋白质稳定
- 生物物理化学 生物物理化学
背景情况:
- 蛋白质,如血红蛋白 (Hb),可以被离子液体 (ILs) 破坏稳定或稳定.
- 了解不同条件下的Hb稳定性至关重要,因为它的原始状态对压力,温度和溶剂都很敏感.
- ILs调节蛋白质结构和功能的潜力仍然是活跃的研究领域.
研究的目的:
- 为了研究非有毒,生物相容的基于胆氨基酸的离子液体 (ChAAILs) 对血红蛋白稳定性的影响.
- 探索使用CHAAILs在中间状态下稳定Hb的可能性.
- 在分子水平上阐明 ChAAILs 和 Hb 之间的结合相互作用.
主要方法:
- 采用了光谱技术,包括UV-Vis,光光谱和循环二元化 (CD).
- 异热定位热量计 (ITC) 用于量化结合热力学.
- 进行了分子对接和量子化学计算,以了解结合机制.
主要成果:
- 观察到血红蛋白在CHAAILs存在时会采取中间状态,既不是完全本土的,也不是完全变质的.
- 分子对接揭示了Hb和ChAAILs之间显著的结合能量 ([Chl][Gly]: -7.2 kcal/mol, [Chl][Met]: -8.7 kcal/mol).
- 结被确定为Hb和CHAAIL之间的关键相互作用机制,与ITC的发现一致.
结论:
- ChAAILs有效地稳定了血红蛋白在一个独特的中间状态.
- 鉴定出Hb的中间状态为稳定策略提供了一个新的目标.
- 作为蛋白质稳定的生物相容剂,ChAAILs显示出有前途,其中键在它们与Hb.的相互作用中发挥着关键作用.
更多相关视频
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.0K
05:59Author Spotlight: Advancing Antimicrobial Resistance Research with Innovative Approaches and Synthetic Compounds
Published on: September 27, 2024
2.1K
相关概念视频
02:15Protein and Protein Structure
79.8K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
A protein's shape is critical to its function. For example, an enzyme...
79.8K
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
419
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
419
01:19Ionic Strength: Effects on Chemical Equilibria
1.5K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
In this solution, the primary...
1.5K
01:19Complexation Equilibria: The Chelate Effect
572
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...
572
01:23Membrane Fluidity
153.2K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
153.2K
01:29Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship
608
Indirect-acting cholinergic agonists are agents that interact with the acetylcholinesterase enzyme in the synaptic cleft, preventing the breakdown of acetylcholine into choline and acetate. Consequently, the concentration of acetylcholine in the synaptic cleft increases. These agonists can be classified into reversible and irreversible inhibitors based on their duration of action.
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
608