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A network of alternative conformations in catalase (Protein Data Bank code: 1gwe) with diverse properties. Multiple phenomena define the network: van der Waals interactions (blue dots and line segments) between sidechains, a hydrogen bond (dotted green line) through a partial-occupancy water (brown), coupling through the locally mobile backbone (black), and perhaps electrostatic forces between ...
Biological systems exist as a complex interplay of countless cellular components interacting across four dimensions to produce the phenomenon called life. While it is common to reduce living organisms to non-living samples to accommodate traditional static imaging tools, the further the sample deviates from the native conditions, the more likely the delicate processes in question will exhibit ...
In the case of flagella, the motion is often planar and wave-like, whereas the motile cilia often perform a more complicated three-dimensional motion with a power and recovery stroke. Eukaryotic flagella—those of animal, plant, and protist cells—are complex cellular projections that lash back and forth.
The challenge in predicting protein structures is that there lacks a physical model that can fully predict protein tertiary structures from their amino acid sequence. This problem is known as the de novo protein structure prediction problem and is one of the great problems of modern science. [ 20 ]
All cells can be considered motile for having the ability to divide into two new daughter cells. [1] Motility is the ability of an organism to move independently using metabolic energy. This biological concept encompasses movement at various levels, from whole organisms to cells and subcellular components.
In case you didn’t know: aiming for 20 to 30 grams of protein at each meal is ideal for keeping you full and energized. (And, FYI, experts recommend spacing out your protein intake across ...
A kinesin is a protein complex belonging to a class of motor proteins found in eukaryotic cells. Kinesins move along microtubule (MT) filaments and are powered by the hydrolysis of adenosine triphosphate (ATP) (thus kinesins are ATPases, a type of enzyme).
While the Recommended Daily Allowance, aka RDA, has long held at 0.8 grams per kilogram of body weight, experts like Kelly Jones, RD, a board-certified sports dietitian are now saying people who ...