C) We looked at three serine protease enzymes: elastase, chymotrypsin, and trypsin. All three enzymes cut peptide bonds using a similar catalytic mechanism. Explain why these are called serine proteases.
Enzyme kinetics
In biochemistry, enzymes are proteins that act as biological catalysts. Catalysis is the addition of a catalyst to a chemical reaction to speed up the pace of the reaction. Catalysis can be categorized as either homogeneous or heterogeneous, depending on whether the catalysts are distributed in the same phase as that of the reactants. Enzymes are an essential part of the cell because, without them, many organic processes would slow down and thus will affect the processes that are important for cell survival and sustenance.
Regulation of Enzymes
A substance that acts as a catalyst to regulate the reaction rate in the living organism's metabolic pathways without itself getting altered is an enzyme. Most of the biological reactions and metabolic pathways in the living systems are carried out by enzymes. They are specific for their works and work in particular conditions. It maintains the best possible rate of reaction in the most stable state. The enzymes have distinct properties as they can proceed with the reaction in any direction, their particular binding sites, pH specificity, temperature specificity required in very few amounts.
The enzyme which helps in the digestion of elastin and release by the pancreas is called elastase. The breakdown of the protein molecules in the digestive system is done by the enzyme trypsin, which is secreted by the pancreas. The enzyme which helps in speeding up the chemical reactions is called chymotrypsin.
The complex compound which functions both outsides and inside the cell in all living organisms is called serine protease. Elastase is the enzyme which can perform its work either alone or in combination with proteases; that is why it is termed as a serine protease. It helps in the analysis of mass spectrometry. Trypsin and chymotrypsin are the enzymes which are called serine protease because of two important reasons: both the enzymes help in the hydrolysis of proteins, and at the active site, both enzymes have Ser residue which is crucial for the synthesis of proteins.
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