Machining protein microcrystals for structure determination by electron diffraction

Helen M. E. Duyvesteyn

doi:10.1073/pnas.1809978115

2018-08-31

Helen M. E. Duyvesteyn

Peijun Zhang (Peijun Zhang)

Wah Chiu *

David I. Stuart *

DOI：10.1073/pnas.1809978115

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摘要

En 中文

We demonstrate that ion-beam milling of frozen, hydrated protein crystals to thin lamella preserves the crystal lattice to near-atomic resolution. This provides a vehicle for protein structure determination, bridging the crystal size gap between the nanometer scale of conventional electron diffraction and micron scale of synchrotron microfocus beamlines. The demonstration that atomic information can be retained suggests that milling could provide such detail on sections cut from vitrified cells.

Keyword:

electron crystallography

FIB

protein crystal

diffraction

structure

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Proceedings of the National Academy of Sciences of the United States of America

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9.1

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10.8W

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