The NMR solution structure of a pH sensitive,D-amino acid containing conopeptide, mr12 . - Han, Yuhong; Huang, Feijuan; Jiang, Hui; Liu, Li; Wang, Qi; Wang, Yanfang; Shao, Xiaoxia; Chi, Chengwu; Du, Weihong; Wang, Chunguang (Biological Magnetic Resonance Bank, 2008)