Posts Tagged ‘cryoEM’

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Atomic structure of the entire mammalian mitochondrial complex I | Nature

November 25, 2017

Atomic structure of the entire mammalian mitochondrial complex I https://www.Nature.com/articles/nature19794 Synthesizing #cryoEM w/ (high-FP) cross-linking data to gets a 3.9A structure w/ 78 helices

Fiedorczuk, K., Letts, J.A., Degliesposti, G., Kaszuba, K., Skehel, M., Sazanov, L.A. (2016) Atomic structure of the entire mammalian mitochondrial complex I. Nature 538; 406-410.

related to:
• Letts, J.A., Fiedorczuk, K., Sazanov, L.A. (2016) The architecture of respiratory supercomplexes. Nature 537; 644-648.

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Quantifying the local resolution of cryo-EM density maps | Nature Methods

November 14, 2017

Quantifying the local resolution of #cryoEM density maps
https://www.Nature.com/articles/nmeth.2727 “Theory…based on the following idea: a L Angstrom feature exists at a pt…if a 3D local sinusoid of wavelength L is statistically detectable above noise at that point.”

QT:{{”
We propose a mathematical theory and an efficient algorithm for measuring local resolution that address all of the above limitations. The theory (Online Methods) is based on the following idea: a λ-Å feature exists at a point in the volume if a three-dimensional (3D) local sinusoid of wavelength λ is statistically detectable above noise at that point. A likelihood-ratio hypothesis test of the local sinusoid versus noise can detect this feature at a given P value (typically P = 0.05). We define the local resolution at a point as the smallest λ at which the local sinusoid is detectable, and we account for multiple testing with an FDR procedure.
“}}

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Welcome | ScienceHill-CryoEM

October 28, 2017

http://sciencehill-cryoem.yale.edu/
cryoem.yale.edu
https://medicine.yale.edu/ccmi/

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Visualizing the molecular sociology at the HeLa cell nuclear periphery | Science

October 26, 2017

http://science.sciencemag.org/content/351/6276/969.long

#Visualizing the molecular sociology [of complexes] at the HeLa cell nuclear periphery, w/ #CryoET at 10 Ang. res. http://science.ScienceMag.org/content/351/6276/969.long

Science. 2016 Feb 26;351(6276):969-72. doi: 10.1126/science.aad8857.
Visualizing the molecular sociology at the HeLa cell nuclear periphery.
Mahamid J1, Pfeffer S2, Schaffer M2, Villa E3, Danev R2, Cuellar LK2, Förster F2, Hyman AA4, Plitzko JM2, Baumeister W1.

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Cryo-electron microscopy wins chemistry Nobel : Nature News & Comment

October 5, 2017

Cryo-EM wins chem Nobel
http://www.Nature.com/news/cryo-electron-microscopy-wins-chemistry-nobel-1.22738 Key techdev work in ’80s on flash freezing + atomic res. imaging of xtal & unordered samples

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Visualizing virus assembly intermediates inside marine cyanobacteria : Nature : Nature Publishing Group

June 16, 2015

Visualizing virus assembly…inside…bacteria
http://www.nature.com/nature/journal/v502/n7473/full/nature12604.html Phase-contrast #cryoET resolves subcellular structures (eg ribosomes)

Cryo-ET determines diff structural snapshots virus during assembly. One tomogram to work out whole pathway.

Wei Dai,
Caroline Fu,
Desislava Raytcheva,
John Flanagan,
Htet A. Khant,
Xiangan Liu,
Ryan H. Rochat,
Cameron Haase-Pettingell,
Jacqueline Piret,
Steve J. Ludtke,
Kuniaki Nagayama,
Michael F. Schmid,
Jonathan A. King
& Wah Chiu

Nature 502, 707–710 (31 October 2013) doi:10.1038/nature12604

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