Enzymes powerpoint2

Enzymes powerpoint2 - Enzymes Enzyme structure and reaction...

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12/30/2007 1 Enzymes • Enzyme structure and reaction kinetics • Serial Dilutions • Scientific writing Alpha amylase Temperature and pH optima Inorganic catalyst Source: Worthington Biochemical Corporation (1972). Manual of Clinical Enzyme Measurements . Why do enzymes have pH and temperature optima? “The environmental factor pH can influence the three-dimensional shape of an enzyme” (p. 76, Symbiosis ) “The activity of enzymes is dependent on the proper tertiary and quaternary structures; the optimum temperature for activity, therefore, may vary, depending on the structure of the enzyme” (p. 79, Symbiosis ) TABLE 3.2 A Summary of Protein Structure Level Description Primary Secondary Tertiary The sequence of amino acids Formation of α -helices and β -pleated sheets Overall three- dimensional shape of a polypeptide Quaternary Shape produced by combinations of polypeptides Stabilized by: Peptide bonds Hydrogen bonding between peptide groups along the peptide backbone Bonds and other interactions between R-groups, or between R-groups and the peptide backbone Bonds and other interactions between R-groups, and between peptide backbones of different polypeptides Gly Ser Asp Gls Table 3.2 Example: Hemoglobin Source: Scott Freeman (2002). Biological Science
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This note was uploaded on 03/08/2010 for the course BIOL 100L taught by Professor Claassen during the Spring '08 term at UMBC.

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Enzymes powerpoint2 - Enzymes Enzyme structure and reaction...

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