In those with XP, however, the enzymes don't function; the repair is not made.

Other enzymes function as copiers, and others as repair units.

And note that in the test tube, enzymes do not function sequentially, working on one DNA at a time.

The enzyme from Thermotoga maritima also functions as S-adenosylhomocysteine deaminase (EC 3.5.4.28).

These enzymes function by adding nucleotides onto the 3' hydroxyl group of the previous nucleotide in a DNA strand.

This accumulation was difficult to explain as the enzymes involved in the usual metabolism of glucose and glycogen were all present and functioning.

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

These enzymes function by nucleophilic attack on carbon 1 of fosfomycin, which opens the epoxide ring and renders the drug ineffective.

These enzymes may function as dimers.

Having shown that enzymes could function outside a living cell, the next step was to determine their biochemical nature.