Here we describe the results of an X-ray diffraction analysis of crystals of N 1-methyl cytosine ... found for purines and pyrimidines, but the structure is unusual in that the two bases do ...

1Cellular Degradation Biology Center, College of Medicine, Seoul National University, Seoul, Republic of Korea. 2Department of Biomedical Sciences, College of Medicine, Seoul National University, ...

University of Göttingen, Institute for Physical Chemistry, Tammannstraße 6, 37077,Göttingen Germany ...