ArticlebioRxiv : the preprint server for biology2026
Diversifying particle-orientation distributions in cryo-EM with LEA protein additives.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
3 authors.
Funding
Abstract
Preferential orientation at the air-water interface (AWI) remains a persistent challenge in cryo-electron microscopy, often requiring extensive optimization or specialized grid preparation strategies. Here, we show that late embryogenesis abundant (LEA) proteins, previously shown to protect fragile samples from AWI-induced damage, can be leveraged to resolve sample orientation bias. The addition of LEA proteins can yield either new orientation distributions or more isotropic ones in samples suffering from orientation biases. These findings establish LEA proteins as a practical class of cryo-EM additives that can reduce AWI-induced damage and improve particle-orientation distributions in single-particle analysis.
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