The presence of chalcogen bonds in native proteins was investigated on a non-redundant and high-resolution (<= 1 Angstrom) set of protein crystal structures deposited in the Protein Data Bank. It was observed that about one half of the sulfur atoms of methionines and disulfide bridges from ...
Error loading player: No playable sources found 30:00 This week's episode of RAZOR examines a microscopy resolution revolution, the SARS-CoV-2 virus in animal populations and a solar plane attempting to reach the stratosphere. Cryogenic electron microscopy, a technique for imaging bi...
Hydrogen atoms represent about half of the total number of atoms in proteins and are often involved in substrate recognition and catalysis. Unfortunately, X-ray protein crystallography at usual resolution fails to access directly their positioning, mainly because light atoms display weak contributions to...
Deoxyribonucleic acid (DNA) is found in every living organism and contains the genetic information that determines the organism’s characteristics, provides the blueprint for making the proteins necessary for life, and serves as a template to pass this information on to the organism’s offspring. ...
Biologists often investigate the processes in cells by equipping proteins with fluorescent labels and excite them with laser radiation. Their investigations could provide much more information with a more precise filter, as they make it easier for them to capture the signals they are interested in. ...
(86,138 bp), and a small single-copy region (SSC) of 13,300 base pairs. The chloroplast genome's coding capacity includes 108 unique genes that synthesize 75 proteins, along with 30 transfer RNAs and 4 ribosomal RNAs. Assessing the cp genomes of its two most closely related species in ...
Enzymes are nanomachines that are exceptionally efficient at catalyzing a chemical reaction. They play a role in all cellular mechanisms. Like all proteins, they are made up of amino acid chains that are folded and assembled in a very precise 3D structure. Some enzymes, like ribonuclease A, are...
The peptide bond is a fundamental unit in understanding the interactions between proteins and the surrounding medium. In this paper, models for the main ch... SH Nilar,TS Pluta - 《Journal of the American Chemical Society》 被引量: 11发表: 1995年 A correlation between the mean polarizability...
The cross‐correlation analysis revealed significant aspects of structure originating uniquely in the dynamical motions of the molecule. In particular, an unanticipated troughspace, domain‐domain correlation was found between the mobile flap region covering the active site and a remote regions of the ...
Ninety-two elements have been found in nature. Around 25 more have been made artificially, but all of these decay into lighter elements, with some of them disappearing in minutes or even seconds. Where do the elements come from? The processes by which elements (or more properly, their nuclei...