1. Introduction
  1.1 Background and significance
  1.2 Objectives of the study
2. Drug-Target Interactions
  2.1 Principles of drug-target binding
  2.2 Types of drug-target interactions
  2.3 Factors influencing drug-target affinity
3. Molecular Mechanisms of Drug Binding
  3.1 Drug-receptor binding kinetics
  3.2 Structural basis of drug-target interactions
  3.3 Allosteric modulation and cooperativity
4. Target Recognition and Selectivity
  4.1 Protein-ligand recognition mechanisms
  4.2 Specificity and selectivity in drug-target interactions
  4.3 Off-target effects and drug toxicity
5. Downstream Signaling Pathways
  5.1 Intracellular signaling cascades
  5.2 Receptor activation and signal transduction
  5.3 Modulation of cellular responses by drugs