Improved sample dispersion in cryo-EM using “perpetually-hydrated” graphene oxide flakes
2018
Abstract For many macromolecular complexes, the inability to uniformly disperse solubilized specimen particles within vitreous ice films precludes their analysis by cryo-electron microscopy (cryo-EM). Here, we introduce a sample preparation process using “perpetually-hydrated” graphene oxide flakes as particle support films, and report vastly improved specimen dispersion. The new method introduced in this study incorporates hydrated graphene oxide flakes into a standard sample preparation regime, without the need for additional tools or devices, making it a cost-effective and easily adoptable alternative to currently available sample preparation approaches.
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