479D:
reference: Crystal structure of a DNA.RNA hybrid duplex with a polypurine RNA r(gaagaagag) and a complementary polypyrimidine DNA d(CTCTTCTTC)., Xiong Y, Sundaralingam M, Nucleic Acids Res 2000 May 15;28(10):2171-6. PMID: 10773088

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