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  • Title: Dinucleoside monophosphate having a high anti conformation. II. The crystal structure of 8,2'-S-cycloinosinyl-(3',5')-8,2'-S-cycloadenosine hexahydrate.
    Author: Hamada K, Matsuo Y, Miyamae A, Fujii S, Tomita K.
    Journal: Nucleic Acids Symp Ser; 1980; (8):s157-60. PubMed ID: 7255188.
    Abstract:
    The crystal and molecular structure of 8,2'-S-cycloinosinyl-(3',5')-8,2'-S-cycloadenosine (IspAs) hexahydrate has been determined by X-ray diffraction method. The torsion angles around the sugar-phosphate backbone are unique and different from those found in the crystalline dinucleoside monophosphates so far determined. The rotation around the P-O bond, (omega',omega), is (g+,t). An IspAs molecule is in a folded form. There is no intramolecular base stacking or base-pairing but the intermolecular base stacking is dominant.
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