Tripod amphiphiles for membrane protein manipulation
- Authors
- Chae, Pil Seok; Laible, Philip D.; Gellman, Samuel H.
- Issue Date
- 2010
- Publisher
- Royal Society of Chemistry
- Citation
- Molecular BioSystems, v.6, no.1, pp.89 - 94
- Indexed
- SCIE
SCOPUS
- Journal Title
- Molecular BioSystems
- Volume
- 6
- Number
- 1
- Start Page
- 89
- End Page
- 94
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/40502
- DOI
- 10.1039/b915162c
- ISSN
- 1742-206X
- Abstract
- Integral membrane proteins (IMPs) are crucial biological components, mediating the transfer of material and information between cells and their environment. Many IMPs have proven to be difficult to isolate and study. High-resolution structural information on this class of proteins is limited, largely because of difficulties in generating soluble forms of such proteins that retain native folding and activity, and difficulties in generating high-quality crystals from such preparations. Isolated IMPs typically do not dissolve in aqueous solution, a property that arises from the large patches of hydrophobic surface necessary for favorable interactions with the core of a lipid bilayer. Detergents are generally required for IMP solubilization: hydrophobic segments of detergent molecules cluster around and shield from water the hydrophobic protein surfaces. The critical role played by detergents in membrane protein manipulation, and the fact that many IMPs are recalcitrant to solubilization and/or crystallization with currently available detergents, suggest that it should be valuable to explore new types of amphiphiles for these purposes. This review constitutes a progress report on our long-term effort to develop a new class of organic molecules, collectively designated "tripod amphiphiles,'' that are intended as alternatives to conventional detergents for membrane protein manipulation. One long-range goal of this research is to identify new types of amphiphiles that facilitate IMP crystallization. This review should help introduce an important biochemical need to organic chemists, and perhaps inspire new approaches to the problem.
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