Authors: Creemers, AFL Klaassen, CHW Bovee-Geurts, PHM Kelle, R Kragl, U Raap, J de Grip, WJ Lugtenburg, J de Groot, HJM

Citation: Afl. Creemers et al., Solid state N-15 NMR evidence for a complex Schiff base counterion in the visual G-protein-coupled receptor rhodopsin, BIOCHEM, 38(22), 1999, pp. 7195-7199