Enzymes are also involved in the building up of chemical molecules elsewhere in the body. In an organism, the active site of each enzyme is a different shape. It is a perfect match to the shape of ...
While the activity of a few RNA enzymes -- called ribozymes -- have ... to exist in organisms ranging from bacteria to plants and animals. Now, a new method, developed by Penn State researchers ...
A research group has discovered that in mammals, a protein kinase A (PKA) promotes wakefulness, while protein phosphatase 1 (PP1) and calcineurin promote sleep. This study revealed that the balance ...