BCH 414 slides Prof Ikewuchi Mrs

• Enzymes are biological catalysts that speed up reactions without being consumed, allowing them to be reused multiple times.
• Substrates are the reactants that bind to the enzyme's active site, forming an enzyme-substrate complex.
• Enzymes are specific to their substrates due to the unique shape of their active sites, which match the substrate's shape.
• Enzyme activity can be regulated through various mechanisms, including the production of enzymes and their inhibition.
• Competitive inhibition occurs when an inhibitor mimics the substrate and competes for the active site, which can be overcome by increasing substrate concentration.
• Non-competitive inhibition involves an inhibitor binding to an enzyme at a site other than the active site, altering the enzyme's shape and function regardless of substrate concentration.
• Allosteric regulation refers to the binding of molecules at allosteric sites, affecting enzyme activity by either inhibiting or activating the enzyme.
• Activators stabilize the active form of allosteric enzymes, increasing their activity by ensuring active sites are available for substrate binding.
• Feedback inhibition is a regulatory mechanism where the end product of a metabolic pathway inhibits an earlier step, preventing overproduction of the product.
• The shape of the active site is crucial for enzyme specificity, and any changes can lead to a loss of function.
• Enzymes can be affected by environmental factors such as temperature and pH, which can lead to denaturation.
• Denaturation is the process where an enzyme loses its three-dimensional structure, rendering it inactive.
• The rate of enzyme-catalyzed reactions can be influenced by substrate concentration, temperature, and pH levels.
• Enzymes are often named after their substrates, with the suffix '-ase' indicating their catalytic function, such as lactase or amylase.
• Understanding enzyme kinetics, including the Michaelis-Menten model, is essential for predicting enzyme behavior in various conditions.
• Knowledge of enzyme inhibition is vital for drug design, as many drugs function by inhibiting specific enzymes in metabolic pathways.
• Enzymes play critical roles in various biological processes, including digestion, metabolism, and DNA replication.
• The study of enzymes is fundamental in biochemistry and has implications in health, industry, and environmental science.
• Enzyme assays are laboratory methods used to measure enzyme activity and understand their kinetics.
• Case studies of enzyme-related diseases highlight the importance of enzymes in health and disease management.