Electron microscopy

Microcrystal electron diffraction

Microcrystal electron diffraction, or MicroED, is a CryoEM method that was developed by the Gonen laboratory in late 2013 at the Janelia Research Campus of the Howard Hughes Medical Institute. MicroED is a form of electron crystallography where thin 3D crystals are used for structure determination by electron diffraction. The method was developed for structure determination of proteins from nanocrystals that are typically not suitable for X-ray diffraction because of their size. Crystals that are one billionth the size needed for X-ray crystallography can yield high quality data. The samples are frozen hydrated as for all other CryoEM modalities but instead of using the transmission electron microscope (TEM) in imaging mode one uses it in diffraction mode with an extremely low electron exposure (typically < 0.01 e−/Å2/s). The nano crystal is exposed to the diffracting beam and continuously rotated while diffraction is collected on a fast camera as a movie. MicroED data is then processed using traditional software for X-ray crystallography without the need for specialized software for structure analysis and refinement. Importantly, both the hardware and software used in a MicroED experiment are standard and broadly available. (Wikipedia).

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From playlist PHYSICS 61 DIFFRACTION OF LIGHT

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Visit http://ilectureonline.com for more math and science lectures! In this video I will find all the locations of the max and min of the diffraction in general. Next video in series: http://youtu.be/vQPaAEkyDFk

From playlist PHYSICS 61 DIFFRACTION OF LIGHT

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From playlist PHYSICS 61 DIFFRACTION OF LIGHT

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From playlist PHYSICS 61 DIFFRACTION OF LIGHT

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From playlist PHYSICS 61 DIFFRACTION OF LIGHT

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From playlist PHYSICS 61 DIFFRACTION OF LIGHT

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Related pages

CMOS | Cryogenic electron microscopy | Goniometer | Electron diffraction | Selected area diffraction | Transmission electron microscopy | Transmission electron cryomicroscopy