CRYSTAL-STRUCTURE OF SODIUM DEOXYINOSINE MONOPHOSPHATE

The crystal and molecular structure of sodium deoxyinosine monophosphate (5'-dIMP) has been determined by x-ray crystallographic methods. The crystals belong to orthorhombic space group P2(1)2(1)2(1), with a = 21.079(5) angstrom, b = 9.206(3) angstrom and c = 12.770(6) angstrom. This deoxynucleotide shows common nucleotide features namely anti conformation about the glycosyl bond, C2' endo pucker for the deoxyribose sugar and gauche-gauche orientation for the phosphate group. The sodium ion is directly coordinated to the O3' atom, a feature observed in many crystal structures of sodium salts of nucleotides.