Multiple Pendants-Bearing Triglucosides for Membrane Protein Studies: Effects of Pendant Length and Number on Micelle Interior Hydration and Protein Stability.
Aiman Sadaf, Hong Sik Yun, Hajin Lee, Samantha Stanfield, Baoliang Lan, Kristine Salomon, Menebere Woubshete, Seonghoon Kim, Muhammad Ehsan, Hyemi Bae, Bernadette Byrne, Claus J Loland, Xiangyu Liu, Lan Guan, Wonpil Im, Pil Seok Chae
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引用次数: 0
Abstract
Membrane proteins play central roles in cell physiology and are the targets of over 50% of FDA-approved drugs. In the present study, we prepared single alkyl-chained triglucosides decorated with multiple pendants, designated multiple pendant-bearing glucosides (MPGs), to enhance membrane protein stability. The new detergents feature two and four pendants of varying size at the hydrophilic-lipophilic interfaces, designated MPG-Ds and MPG-Ts, respectively. When tested with model membrane proteins, including the human adrenergic receptor (β2AR), the tetra-pendant-bearing MPGs (MPG-Ts) demonstrated superior performance compared to the dipendant analogs (MPG-Ds) and the gold standard DDM. All-atom molecular dynamics (MD) simulations results reveal that the four-pendant configuration of this detergent is remarkably effective in excluding water from the hydrophobic micelle interiors compared to the dipendant MPGs and DDM, an unprecedented feature of this new detergent. Our findings provide a novel strategy for designing water-resistant detergents, advancing the field of membrane protein research.
期刊介绍:
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