Homology modelling and docking studies on Varicella Zoster Virus Thymidine kinase.

Thymidine kinase (TK) is the key enzyme in antiviral and suicide gene therapies. While herpes simplex virus type 1 thymidine kinase has been widely studied and crystallised less is known on Varicella Zoster Virus thymidine kinase (VZV TK) and its three-dimensional structure. In this paper we report the model of the three-dimensional structure of VZV TK resulting from a homology modelling study. Subsequent docking studies of the natural substrate deoxythymidine (dT) and known antiviral drugs were performed and shaded new light on the binding characteristics of the enzyme.