a 1992: Reversible protein phosphory lation as a biological regulatory mechanism a 1994: G-proteins and the role of these proteins in signal transduction in cells a 1998: Nitric oxide as a signalling molecule in the cardiovascular system a 2000: Signal transduction in the nervous system 2004: odorant receptors and the organization of the olfactory system◼ 1992: Reversible protein phosphorylation as a biological regulatory mechanism ◼ 1994: G-proteins and the role of these proteins in signal transduction in cells ◼ 1998: Nitric oxide as a signalling molecule in the cardiovascular system ◼ 2000: Signal transduction in the nervous system ◼ 2004: odorant receptors and the organization of the olfactory system