As mentioned above, sucrose phosphorylase is a very important enzyme in metabolism.

Molybdenum is a cofactor to enzymes important in building amino acids.

A large number of important enzymes has been detected in the tegument.

Nitrogenase is the most important enzyme involved in nitrogen fixation.

However, it is not fully understood how these important enzymes function during viral replication.

Vitamin C acts as an electron donor for important enzymes:

N-Acetyltransferase is important because it acts as an important enzyme of drug metabolism.

Figure 4.1 shows a scheme of the metabolism of lipoproteins and the important regulatory enzymes.

Thus creatine kinase is an important enzyme in such tissues.

Implications of this difference, if any, on the activity of important enzymes are currently unknown.