Enzymes Course

Lesson 1 • Active Site Architecture

Describes the structural features of active sites and how they enable substrate recognition. Prepares students for understanding catalytic mechanisms in later chapters.

Lesson 2 • Enzyme Classification and Nomenclature

Introduces the six major enzyme classes and systematic naming conventions. Provides a universal reference framework used throughout the course.

Lesson 3 • Chemical Nature of Enzymes

Covers protein structure levels and cofactor requirements essential to enzyme function. Connects molecular composition to catalytic capability.

Lesson 4 • What Enzymes Are and Do

Defines enzymes as biological catalysts and distinguishes them from non-enzymatic catalysts. Anchors the chapter by establishing the functional identity of enzymes.

Lesson 1 • Michaelis-Menten Kinetics

Derives the Michaelis-Menten equation and defines Km and Vmax. These parameters are the primary quantitative tools used in enzyme characterization.

Lesson 2 • Measuring and Plotting Kinetic Data

Covers assay design, data collection, and graphical analysis methods. Translates theoretical kinetics into practical laboratory measurement skills.

Lesson 3 • Catalytic Efficiency and kcat

Introduces kcat, turnover number, and the specificity constant kcat/Km. Connects molecular rate constants to overall enzyme performance metrics.

Lesson 4 • Multi-Substrate Reaction Kinetics

Extends Michaelis-Menten analysis to reactions involving two or more substrates. Prepares students for kinetic analysis of complex physiological enzymes.

Lesson 1 • Cofactor-Dependent Catalytic Mechanisms

Covers mechanisms of enzymes requiring NAD+, FAD, PLP, and metal cofactors. Extends mechanistic understanding to the majority of metabolic enzymes.

Lesson 2 • General Catalytic Strategies

Surveys acid-base, covalent, metal ion, and proximity catalysis. Establishes the mechanistic toolkit applied to specific enzyme families later.

Lesson 3 • Transition State Theory and Enzyme Design

Connects transition state stabilization to catalytic power and inhibitor design. Bridges mechanistic understanding to applied enzyme engineering concepts.

Lesson 4 • Lysozyme and Acid Catalysis

Analyzes lysozyme as a model for general acid-base and electrostatic catalysis. Illustrates how active site residues stabilize charged intermediates.

Lesson 1 • Quantitative Inhibition Analysis

Teaches graphical and statistical methods for determining inhibition constants. Builds practical data analysis skills applicable to research and industry.

Lesson 2 • Reversible Inhibition Fundamentals

Defines competitive, uncompetitive, and mixed inhibition with kinetic signatures. Provides the classification framework for all inhibitor analysis.

Lesson 3 • Irreversible and Covalent Inhibition

Covers mechanism-based and affinity-label inhibitors that permanently inactivate enzymes. Connects to drug design strategies targeting specific enzyme active sites.

Lesson 4 • Allosteric Inhibition and Activation

Explains inhibition and activation at sites remote from the active site. Introduces cooperativity and sigmoidal kinetics as regulatory phenomena.

Lesson 1 • Feedback Inhibition in Metabolic Pathways

Analyzes end-product inhibition as a homeostatic control mechanism. Connects allosteric regulation to pathway-level metabolic control.

Lesson 2 • Proteolytic Activation of Zymogens

Explains how inactive precursors are activated by targeted proteolysis. Illustrates irreversible regulatory strategies in digestion and blood clotting.

Lesson 3 • Hormonal and Second Messenger Control

Describes how extracellular signals regulate intracellular enzyme activity via cascades. Integrates enzyme regulation into broader cell signaling networks.

Lesson 4 • Covalent Modification of Enzymes

Covers phosphorylation, acetylation, ubiquitination, and other post-translational modifications. Shows how reversible covalent changes switch enzyme activity on or off.

Lesson 1 • Cell Disruption and Crude Extract Preparation

Covers mechanical, chemical, and enzymatic cell lysis methods. Establishes the starting point for all downstream purification procedures.

Lesson 2 • Chromatographic Purification Strategies

Details ion exchange, size exclusion, affinity, and hydrophobic interaction chromatography. These techniques form the core of any enzyme purification pipeline.

Lesson 3 • Assessing Purity and Activity

Teaches specific activity calculation, SDS-PAGE analysis, and Western blotting. Quantifies purification success at each step of the process.

Lesson 4 • Structural Characterization Techniques

Introduces X-ray crystallography, cryo-EM, and NMR for enzyme structure determination. Connects purified enzyme samples to three-dimensional structural data.

Lesson 1 • Engineering Substrate Specificity

Targets active site residues to alter or broaden substrate acceptance. Directly applicable to industrial biocatalysis and metabolic engineering projects.

Lesson 2 • Rational Design Principles

Uses structural and mechanistic knowledge to guide targeted mutagenesis. Establishes the logic-driven approach to enzyme improvement before combinatorial methods.

Lesson 3 • Directed Evolution Methodology

Covers random mutagenesis, recombination, and high-throughput screening cycles. Provides the experimental workflow for evolving enzymes without structural knowledge.

Lesson 4 • Semi-Rational and Combinatorial Approaches

Combines structural insight with combinatorial library diversity for efficient evolution. Bridges rational design and directed evolution for superior outcomes.

Lesson 1 • Diagnostic Enzyme Applications

Covers enzyme-linked immunosorbent assays, biosensors, and clinical chemistry panels. Shows how enzyme activity underpins quantitative diagnostic measurements.

Lesson 2 • Regulatory and Safety Considerations

Addresses safety assessment, allergenicity testing, and approval pathways for enzyme products. Prepares students to navigate compliance requirements in applied enzyme work.

Lesson 3 • Enzyme Immobilization Technologies

Covers covalent attachment, entrapment, and cross-linking for reusable enzyme systems. Addresses the practical need for stable, recyclable biocatalysts in industry.

Lesson 4 • Enzymes in Industrial Biotechnology

Surveys enzyme use in food, textile, detergent, and biofuel industries. Demonstrates the economic scale and diversity of industrial enzyme deployment.