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 ...

For an enzyme to function, it adopts a shape that perfectly matches the molecule it processes, much like a lock matches a key. The unique grooves in the enzyme – the lock – that interact with ...

High temperatures will break these forces. The enzyme, including its active site, will change shape and the substrate will no longer fit. The rate of reaction will be affected, or the reaction ...

Enzymes are another type of protein, and these molecules catalyze the biochemical reactions that occur in cells. Yet other proteins work as monitors, changing their shape and activity in response ...

Because enzymes are not part of the product, they can be reused again and again. How efficient! Enzyme activity measures how fast an enzyme can change a substrate into a product. Changes in ...

Save guides, add subjects and pick up where you left off with your BBC account. Different enzymes contain up to 20 different amino acids linked together to form a chain which then folds into the ...

When this enzyme is activated ... observations and derived a theoretical framework to predict how a cell's shape will change, given how it is stimulated with light. The framework, Fakhri says ...

This shape change is driven by two enzymes: the small GTPase Rho and its activation enzyme GEF. By incorporating light-controllable molecular switches into GEF enzymes, the researchers managed to ...