Research interests

Computational Chemistry, Computational Biochemistry and Computational Nanotechnology

Development of quantum simulation tools for nuclear quantum effects in enzyme catalysis. This entails development of new path-integral methods for the simulations of zero-point energy and tunneling effects in condensed phase environments. Several new methods are being developed and are incorporated into simulation platforms for enzymatic reactions.

Development of hybrid quantum mechanics/molecular mechanics methods. This includes the development of specific reaction parameter semi-empirical Hamiltonians for use in enzyme simulations. Additionally, we also develop novel perturbation approaches wherein a low-level Hamiltonian is perturbed into a higher level one with a view to enhance accuracy at a reduced computational cost.

Study dynamical effects and tunnelling in enzyme catalysis through hydrogen transfer reactions. This involves studying several important enzyme systems such as the hydride transfer in dihydrofolate reductase and formate dehydrogenase.

Enzyme mechanisms through heavy atom kinetic isotope effects. This approach entails the study of the reaction mechanism in deaminase and decarboxylase enzymes via heavy atom kinetic isotope effects. Enzyme mechanisms in a variety of systems, such as

Tunneling enhanced catalysis in Nitroalkane Oxidase.

Properties of cathode material in lithium batteries using density functional theory approaches (

Properties of solar cell materials using density functional theory approaches