They can be synthesized/released and broken down again in specific reactions by enzymes or ion channels.

To summarize, the organic compounds found in cells are built up and broken down by enzymes.

These bonds are weak, easily separated by gentle heating, enzymes, or physical force.

PSA shows stability under cell culture conditions and allows for induced degradation by enzymes.

These processes are all controlled and completed by various enzymes.

They are only made possible by enzymes - biological catalysts that speed up their chemical reactions to a respectable level.

Peptides would be selected that could only be "cut off" or cleaved by enzymes specific for certain tumors.

The reaction involved the addition and removal of phosphates in proteins by enzymes.

In the food industry, autolysis involves killing the yeast and encouraging the breakdown of its cells by various enzymes.

He appreciated as early as 1917 that genes acted by controlling enzymes.