Enzymes are proteins that can change shape and therefore become active or inactive. An activator molecule (green pentagon) can bind to an enzyme (light green puzzle shape) and change its overall shape ...

Enzyme kinetics involves the measurement of the rate at which chemical reactions that are catalyzed by enzymes occur. Knowledge about the kinetics of an enzyme can reveal useful information about its ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 116, No. 15 (April 9, 2019), pp. 7298-7307 (10 pages) Thousands of biochemical reactions with characterized ...

It is well known in physics and chemistry that equal charges repel each other, while opposite charges attract. It was long assumed that this principle also applies when enzymes -- the biological ...

New research explains how a key enzyme, PP1, functions in protein-protein interactions. Researchers have described how PP1 "chooses" proteins. The finding is important, because erroneous PP1 ...

In an organism, the active site of each enzyme is a different shape. It is a perfect match to the shape of the substrate molecule, or molecules. This is essential to the enzyme being able to work. One ...

The rate of enzyme reaction can be affected by substrate concentration. As the substrate concentration increases, the enzyme reaction increases until all of the active sites are occupied by the ...