In 1990, Henderson was the first to use an electron microscope to produce «a three - dimensional image of a protein
at atomic resolution.
Researchers have gone on to study «proteins that cause antibiotic resistance» and to produce three - dimensional images of the Zika virus
at atomic resolution, permitting scientists to hunt for weaknesses that new pharmaceuticals could exploit.
«Additionally, while previous studies of dynein have revealed the molecule's two different static conformations, our animation visually depicts one plausible way that the protein can transition between those shapes
at atomic resolution, which is something that other simulations can't do.
Then in 1990, after 15 years» work refining sample preparation and electron detection, Henderson succeeded in using an electron microscope to create an image of a large bacterial cell membrane protein called bacteriorhodopsin, and do
it at atomic resolution.
The study appeared in the April 14 print edition of Chemical Communications in the article «Visualizing Nanoparticle Mobility in Liquid
at Atomic Resolution,» by Madeline Dukes, an applications scientist at Protochips Inc. in Raleigh, N.C.; Benjamin Jacobs, an applications scientist at Protochips; David Morgan, assistant manager of the Cryo - Transmission Electron Microscopy Facility at Indiana University Bloomington; Harshad Hegde, a computer scientist at the Virginia Tech Carilion Research Institute; and Kelly, who is also an assistant professor of biological sciences in the College of Science at Virginia Tech.
On page 206 of this issue, Han et al. report images of halogen bonding
at atomic resolution (4).
That work triggered a close race between the Cambridge University group and a rival team at MIT in deciphering tRNA's 3D structure
at atomic resolution with x-ray crystallography, with the two labs publishing results within 2 weeks of each other.
«When combined with previous work, it is remarkable now to be able to assemble a true molecular movie of the photocycle of this blue light detector in bacteria
at atomic resolution, with the intermediate structures appearing and fading in the correct sequence.
«Alzheimer fibrils
at atomic resolution: Fundamental structural difference to earlier models.»
A European research team and a team from the United States (Massachussetts Institute of Technology in cooperation with Lund University) have simultaneously succeeded in elucidating the structure of the most disease - relevant beta - amyloid peptide 1 - 42 fibrils
at atomic resolution.
This was made possible by a combination of nuclear magnetic resonance spectroscopy (NMR) and electron paramagnetic resonance spectroscopy (EPR), two procedures that make it possible to characterise the structural configuration of a protein
at atomic resolution.
For example, he co-invented a widely used technique for locating impurity atoms in nanocrystals and published the first observation of dislocation kinks,
at atomic resolution.
X-ray crystallography allowed scientists to «see» the structure of matter — whether it was molecular or otherwise —
at atomic resolution.
It is powerful because an AFM can generate images
at atomic resolution with angstrom scale resolution height information, with minimum sample preparation.
Twelve years later, he and his team succeeded in developing the NMR techniques for capturing a molecule in action, morphing into different shapes
at atomic resolution.
Several more researchers presented their work during the day, including protein synthesis
at atomic resolution, bio-imaging opportunities at synchrotrons, multi-dimensional imaging during plant cell differentiation, how to use electron cryomicroscopy for in situ structural biology, and how structured illumination microscopy can offer insights into the regulation of mammalian meiosis.
The final outcome is a detailed 3D view of the molecular structures
at atomic resolution.
«Fitzpatrick and colleagues have paved the way for development of new drugs designed to prevent tangle formation by deciphering the molecular structure of the «tau» protein filaments that make up the tangles
at atomic resolution.
«Seeing this drug bound to its intended human protein target
at atomic resolution was mind - blowing,» said Frost, an assistant professor of biochemistry and biophysics at UCSF.
GERBER: Our sole idea in developing AFM was to image nonconductive surfaces, such as ceramics or biological materials,
at atomic resolution by scratching a very fine needle on a long arm, or cantilever, over that surface.
Not exact matches
The resulting
atomic -
resolution topographic images reveal positions and orientations of atoms and molecules, and also provide a detailed look
at structural defects in the surface.
Atomistic models and
atomic -
resolution STEM HAADF (scanning transmission electron microscopic high - angle annular dark - field) images showing three examples of segregation - induced superstructures observed
at randomly - selected general grain boundaries of a nickel - bismuth (Ni - Bi) polycrystalline alloy.
The probe of an
atomic force microscope (AFM) scans a surface to reveal details
at a
resolution 1,000 times greater than that of an optical microscope.
«Understanding how the enzyme actually works requires the knowledge of its three dimensional molecular structure
at the
atomic level,» said Dr. Mueller, principal investigator for the study that used cryo - electron microscopy (cryo - EM) to reveal the enzyme
at near
atomic resolution.
While cryo - EM isn't new, advancements in technology have made it possible to solve the structure
at near
atomic resolution.
Cryo - electron microscopy fires electrons
at proteins that have been frozen in solution, providing images of such high
resolution that scientists can create models down to the
atomic level.
Shim and his research team combined X-ray techniques in the synchrotron radiation facility
at the U.S. Department of Energy's National Labs and
atomic resolution electron microscopy
at ASU to determine what causes unusual flow patterns in rocks that lie 600 miles and more deep within the Earth.
Using this method, the biological molecules» three - dimensional structure can be determined
at a nearly
atomic resolution.
Until now, scientists couldn't examine dendrites so closely because the only technique for imaging battery components with
atomic - level
resolution destroys these fragile filaments, explains study coauthor Yuzhang Li, a materials scientist
at Stanford University.
The first included pictures of individual nanoparticles»
atomic structures
at 100,000 - times magnification — the highest
resolution images ever taken of nanoparticles in a liquid environment.
Now a team led by x-ray crystallographer Wayne Hendrickson
at Columbia University in New York City and molecular virologist Joseph Sodroski
at the Dana - Farber Cancer Institute in Boston has determined gp120's
atomic structure to a
resolution of 2.5 angstroms.
Taking this as his basis, he used x-ray diffraction experiments to elucidate its spatial structure
at the level of
atomic resolution.
At Cornell University, we developed and tested a new detector for electron microscopes that enables quantitative measurements of electric and magnetic fields from micrometers down to
atomic resolution.
LiWang's lab also collaborates with X-ray crystallographers like Carrie Partch
at the University of California, Santa Cruz, because X-ray crystallography is a powerful technique to capture static structures of proteins and their complexes
at atomic and near -
atomic resolution.
«Magnetism has its origins
at the
atomic scale, but the techniques that we use to measure it usually have spatial
resolutions that are way larger than one atom,» Idrobo said.
Scientists are providing the clearest view yet of an intact bacterial microcompartment, revealing
at atomic - level
resolution the structure and assembly of the organelle's protein shell.
The researchers used electron cryomicroscopy and computer reconstruction techniques to visualize the channel
at near -
atomic resolution.
«The advantage of this system is that, potentially, it could cost only hundreds of pounds and gives
resolution at the
atomic scale,» says Peter Ivey, who is leading the team
at the electrical engineering department in Sheffield.
I am an experimentalist, and I use ultrahigh -
resolution ion - and electron - microscopy techniques, including focused - ion - beam scanning - electron microscopy and transmission electron microscopy, to determine the composition and structure of these materials
at scales ranging from millimeters down to the
atomic.
The microscope captures 3D images about once per second
at resolutions of about 200 to 250 nanometers, not
atomic resolution, but still
at a dynamic level never before seen.
While there are very good bioinformatics tools for the analysis, validation and comparison of detailed
atomic structures,
at present there are very few tools available to work with low -
resolution data (i.e. volume or shape data).
Platinum
atomic signal was monitored
at 265.945 nm, and increased peak
resolution was adjusted with 12 points per peak.
Kamal Youcef - Toumi, a professor of mechanical engineering
at MIT and SASTA's Board member, says the instrument's sensitivity and speed will enable scientists to watch
atomic - sized processes play out as high -
resolution «movies.»
Join us on October 10th to learn about SPHIRE (SParx for HIgh
Resolution Electron microscopy) from Toshio Moriya, post-doctoral fellow
at the Max Planck Institute of Molecular Physiology SPHIRE: User - friendly pipeline for near -
atomic...
«I was very excited to see the electron density map and how you can determine the structure
at near
atomic resolution,» Dong says.