This unit provides an introduction to the techniques and applications of molecular modelling with particular emphasis on methods used in drug design.
The unit contains two streams:
-  modelling methods; which introduces quantum mechanics, molecular mechanics, energy optimisation and molecular simulation and
-  modelling applications; which covers quantitative structure-activity relationships (QSAR), pharmacophores, structure-based drug design and homology modelling.
This will involve:
-  modelling methods in computational chemistry
-  applications of molecular modelling
At the end of this unit students will have:
-   A broad understanding of computational chemistry and its application to drug bimolecular problems;
-  An understanding of common molecular modelling terminology.  An appreciation of the factors involved in performing quantum mechanical (QM) calculations and the information that these calculations can provide;
-   An appreciation of molecular mechanisms energy calculations and the information that these calculations can provide;
-  An understanding of the components making up molecular mechanic force fields including bond stretching, angle bending and dihedral angle terms and nonbonded interactions (van der Waals and electrostatic);
-  An understanding of molecular potential energy surfaces and the concepts of global and local minima;
-  An appreciation of energy optimisation methods including steepest descents and conjugate gradient methods;
-  An appreciation of approaches to finding global energy minima;
-  An understanding of the Boltzmann distribution and the relationship between temperature and the population of energetic states;
-  An appreciation of molecular simulation methods;
-  An understanding of drug physicochemical properties including electronic, steric and hydrophobic characteristics;
-  An understanding of the statistical methods used to develop QSAR equations;
-  An appreciation of the application of QSAR in drug discovery;
-  An appreciation of impact of drug physicochemical parameters on biopharmaceutical properties;
-  An understanding of the pharmacophore concept and its use in drug discovery;
-  An appreciation of structure and ligand-based drug design;
-  An appreciation of homology modelling methods;
-  The ability to use a specific molecular modelling package to study molecular conformation and analyse drug-receptor interactions;
-  Describe the molecular interactions which govern molecular structure including bonded, non-bonded and electrostatic interactions.
After completing this unit the student will have the following practical skills:
-  Perform simple molecular modeling studies using the molecular modeling package;
-  Describe the processes involved in molecular mechanics energy calculations;
-  Explain the processes involved in running quantum mechanics calculations;
-  Interpret and critique a QSAR equation;
-  Generate statistically acceptable QSAR equations from physicochemical parameters and biological activity data;
-  Derive simple pharmacophore models;
-  Describe protein-ligand interactions and how an understanding of these can be applied to drug design;
-  Investigate a research topic using literature sources and write a simple report.
Final exam (2 hour): 60%; mid-semester exam: 20%; practical assessment: 20%.
Contact hours for on-campus students:
-  Thirty six hours of lectures
-  Nine 4-hour practical classes