Mg, Zn, Mn, Fe
Coenzyme: a complex organic molecule:
NAD, FAD, CoA, some vitamins
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Enzyme
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➢ Nomenclature
Enzymes are named by adding the suffix –ase to the:
k Ae Ea RT
We have,
Eaa 2
Ae RT
exp(7000 /(2 293)) 108 exp(18000 /(2 293))
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Enzyme
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The interaction between the enzyme and its substrate——weak force:
End of the substrate
Such as urease
The reaction catalyzed
Such as alcohol dehydrogenase
Enzymes using familiar names:
Pepsin in the digestive tract Trypsin in the digestive tract Rennin used in cheese making “Old yellow”, which caused browning of sliced apples
Chapter 2 Enzymes
Lysozyme
Reduced DsbA from E. coli
§2.1 Introduction
➢ Definition
Enzymes are usually proteins of high molecular weight (15,000 < MW < several million Daltons) that act as catalysts.