Despite knowing that the active centres of many metalloprotein enzymes are iron porphyrin ... functionalization of the porphyrins (for example by using organic 'picket fences' to prevent ...

Changes in temperature or acidity can make enzyme reactions go faster or slower. Enzymes work best under certain conditions, and enzyme activity will slow down if conditions are not ideal. For example ...

For example, in liver cells the toxic chemical ... Liver cells produce the enzyme catalase to speed up the breakdown of hydrogen peroxide. Enzymes can speed up the break down of complex molecules ...

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 ...