Computer-aided drug design have emerged as a promising alternative tool to replace the conventional complex, expensive and very time consuming way of designing and development of new potential drugs. In this book, the author presents a comprehensive coverage of the topic with special emphasis on investigation of structure and properties of few organic bio-active molecules having anti-tubercular activities using several molecular modeling techniques. The key features of this book are: Focuses on quantum chemical calculations performed to determine the structure and reactivity of two of the most commonly used anti-tubercular drug molecules INH, PZA including MHI which is a novel natural analogue of INH. This book also gives a detailed insight into the mode of interaction of INH that involves binding of isoniazid-NAD adducts to the active site of Mycobacterium tuberculosis enoyl-ACP reductase (InhA) studied using docking and quantum mechanics/molecular mechanics (QM/MM) approaches. The book should be of help to the research students working in the field of drug designing especially using molecular modelling techniques.

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Dr Kalyan Kr Hazarika, M.Sc., Ph.D has been serving for the Department of Molecular Biology & Biotechnology, Tezpur University, Assam, India. His research interest includes computational studies of bioactive natural products.