1. A novel high-throughput screen for identifying lipids that stabilise membrane proteins in detergent based solution
- Author
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Cristina Cecchetti, Edward Pryor, Simon Tanley, Adrian Goldman, Bernadette Byrne, Claire E. Naylor, Jannik Strauss, Claudia Stohrer, Jeanette Hobbs, Molecular and Integrative Biosciences Research Programme, Biochemistry and Biotechnology, Biotechnology and Biological Sciences Research Council (BBSRC), and Commission of the European Communities
- Subjects
0301 basic medicine ,Glycerol ,Surfactants ,Cell Membranes ,Biochemistry ,PYROPHOSPHATASE ,Stability assessment ,0302 clinical medicine ,Macromolecular Structure Analysis ,CRYSTAL-STRUCTURE ,ASSAY ,Integral membrane protein ,Materials ,Multidisciplinary ,Lipid Analysis ,Chemistry ,Protein Stability ,Organic Compounds ,Monomers ,SITE ,Lipids ,CONFORMATION ,FAMILY ,Solutions ,Physical Sciences ,Medicine ,lipids (amino acids, peptides, and proteins) ,Cellular Structures and Organelles ,CRYSTALLIZATION ,Research Article ,Cholesteryl hemisuccinate ,General Science & Technology ,Science ,Detergents ,Materials Science ,03 medical and health sciences ,CHOLESTEROL BINDING ,Lipid Structure ,Humans ,Integral Membrane Proteins ,Prescribed drugs ,Molecular Biology ,Imidazole ,G protein-coupled receptor ,PURIFICATION ,Organic Chemistry ,Chemical Compounds ,Structural integrity ,Membrane Proteins ,Biology and Life Sciences ,Cell Biology ,Polymer Chemistry ,High-Throughput Screening Assays ,030104 developmental biology ,Membrane protein ,Nanoparticles ,1182 Biochemistry, cell and molecular biology ,030217 neurology & neurosurgery - Abstract
Membrane proteins have a range of crucial biological functions and are the target of about 60% of all prescribed drugs. For most studies, they need to be extracted out of the lipid-bilayer, e.g. by detergent solubilisation, leading to the loss of native lipids, which may disturb important protein-lipid/bilayer interactions and thus functional and structural integrity. Relipidation of membrane proteins has proven extremely successful for studying challenging targets, but the identification of suitable lipids can be expensive and laborious. Therefore, we developed a screen to aid the high-throughput identification of beneficial lipids. The screen covers a large lipid space and was designed to be suitable for a range of stability assessment methods. Here, we demonstrate its use as a tool for identifying stabilising lipids for three membrane proteins: a bacterial pyrophosphatase (Tm-PPase), a fungal purine transporter (UapA) and a human GPCR (A2AR). A2AR is stabilised by cholesteryl hemisuccinate, a lipid well known to stabilise GPCRs, validating the approach. Additionally, our screen also identified a range of new lipids which stabilised our test proteins, providing a starting point for further investigation and demonstrating its value as a novel tool for membrane protein research. The pre-dispensed screen will be made commercially available to the scientific community in future and has a number of potential applications in the field.
- Published
- 2021