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Secondary structure of Φ29 pRNA showing structured Domains I and II, an unstructured linker, and helices A through F.35, 37 The bulge loop is highlighted in blue, the 3WJ in magenta, the CE (right hand) and D (left hand) loops in orange, and the E loop in green. (Reprinted with permission from Ref 35. Copyright 1990 Elsevier)
