Cryo-electron microscopy analysis of small membrane proteins.
Cryo-electron microscopy analysis of small membrane proteins.
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DOI:
10.1016/j.sbi.2020.05.009
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发表时间:
2020-10
影响因子:
6.8
通讯作者:
Mancia F
中科院分区:
文献类型:
--
作者:
Nygaard R;Kim J;Mancia F
Recent advances in single-particle cryogenic-electron microscopy have facilitated an exponential growth in the number of membrane protein structures determined to close to atomic resolution. Nevertheless, despite improvements in microscope hardware, cryo-EM software and sample preparation techniques, challenges remain for structural analysis of small-sized membrane proteins (i.e. < 150 kilodalton). Here we discuss recent examples of structures of macromolecules from this category determined by cryo-EM. We analyze the underlying difficulties, the enabling technologies such as the use of antibody fragments to gain size and provide fiducials for particle alignment, and the unresolved issues like dislocation of complexes at the air-water interface. Finally, we briefly highlight the biological relevance of some of these success stories, and our predictions for the future.
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MacKinnon, R
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Scheres, Sjors H. W.
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Nordlund P
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