Machining protein microcrystals for structure determination by electron diffraction

Duyvesteyn HME., Kotecha A., Ginn HM., Hecksel CW., Beale EV., de Haas F., Evans G., Zhang P., Chiu W., Stuart DI.

<jats:p>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.</jats:p>

DOI

10.1073/pnas.1809978115

Type

Journal article

Journal

Proceedings of the National Academy of Sciences

Publisher

Proceedings of the National Academy of Sciences

Publication Date

18/09/2018

Volume

115

Pages

9569 - 9573

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