Cooperativity in monomeric enzymes with single ligand-binding sites
β Scribed by Carol M. Porter; Brian G. Miller
- Book ID
- 119196175
- Publisher
- Elsevier Science
- Year
- 2012
- Tongue
- English
- Weight
- 347 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0045-2068
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π SIMILAR VOLUMES
We offer a novel graphical method for determining the number of essential sites in enzymes that contain multiple binding sites for a ligand. This method is applicable both to monomeric enzymes containing multiple "unspecific" sites (for protons, metal ions, etc.) and to oligomeric enzymes containing
N-benzoyl-L-phenylalanyl-L-phenylalanine is an excellent peptide substrate for carboxypeptidase A; at 30Β°C and pH 7.5, K m is 2.6 Γ 10 -5 M while k cat is 177 s -1 (k cat /K m = 6.8 Γ 10 6 M -1 s -1 ). Indole-3-acetic acid is a noncompetitive or mixed inhibitor towards the peptide and toward hippury