3O3G:
reference: Crystal Structures of RNase H2 in Complex with Nucleic Acid Reveal the Mechanism of RNA-DNA Junction Recognition and Cleavage., Rychlik MP, Chon H, Cerritelli SM, Klimek P, Crouch RJ, Nowotny M, Mol Cell. 2010 Nov 24;40(4):658-70. PMID: 21095591

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