The Rate and Structural Consequences of Proline Cis-Trans Isomerization in Calbindin D9k: NMR Studies of the Minor (cis-pro43) Isoform and the Pro43Gly Mutant - Kordel, Johan; Forsen, Sture; Drakenberg, Torbjorn; Chazin, Walter J. (Biological Magnetic Resonance Bank, 1995)