Dear readers of the Hacettepe Journal of Biology and Chemistry,
We are pleased to introduce you the third issue of Hacettepe Journal of Biology and Chemistry in 2007. This volume is composed of 33 papers authored by a distinguished group of scientists. The papers in this issue of the Hacettepe J. Biol. & Chem. present some of the leading techniques of biology and chemistry as they apply to biomolecular structure and processes important in the life sciences.