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ID: 16677.0, MPI für biophysikalische Chemie / Theoretische und computergestützte Biophysik (Dr. Helmut Grubmüller)
Progress in the analysis of membrane protein structure and function
Authors:Werten, P. J. L.; Remigy, H. W.; de Groot, B. L.; Fotiadis, D.; Philippsen, A.; Stahlberg, H.; Grubmueller, H.; Engel, A.
Date of Publication (YYYY-MM-DD):2002-10-02
Title of Journal:FEBS Letters
Issue / Number:1
Start Page:65
End Page:72
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Structural information on membrane proteins is sparse, yet they represent an important class of proteins that is encoded by about 30% of all genes. Progress has primarily been achieved with bacterial proteins, but efforts to solve the structure of eukaryotic membrane proteins are also increasing. Most of the structures currently available have been obtained by exploiting the power of X-ray crystallography. Recent results, however, have demonstrated the accuracy of electron crystallography and the imaging power of the atomic force microscope. These instruments allow membrane proteins to be studied while embedded in the bi-layer, and thus in a functional state. The low signal-to-noise ratio of cryo-electron microscopy is overcome by crystallizing membrane proteins in a two- dimensional protein-lipid membrane, allowing its atomic structure to be determined. In contrast, the high signal-to- noise ratio of atomic force microscopy allows individual protein surfaces to be imaged at subnanometer resolution, and their conformational states to be sampled. This review summarizes the steps in membrane protein structure determination and illuminates recent progress. (C) 2002 Published by Elsevier Science B.V. on behalf of the Federation of European Biochemical Societies.
Free Keywords:membrane protein expression; two-dimensional crystallization; atomic force microscopy; three-dimensional electron microscopy; molecular dynamics simulation
Comment of the Author/Creator:Date: 2002, OCT 2
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für biophysikalische Chemie/Abt. Helmut Grubmüller / 070
MPI für biophysikalische Chemie/AG Bert de Groot
External Affiliations:Univ Basel, Biozentrum, ME Muller Inst Microscopy,; Klingelbergstr 70, CH-4056 Basel, Switzerland; Univ Basel, Biozentrum, ME Muller Inst Microscopy, CH-4056 Basel, Switzerland
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