Residue conformations ------------------------------------------- 1 : U C3p_endo anti 2 : U C3p_endo anti 3 : G C3p_endo anti 4 : C C3p_endo anti 5 : U C3p_endo anti 6 : G C3p_endo anti Adjacent stackings ---------------------------------------------- 1-2 : adjacent_5p upward Non-Adjacent stackings ------------------------------------------ Number of stackings = 1 Number of adjacent stackings = 1 Number of non adjacent stackings = 0 Base-pairs ------------------------------------------------------ 1-6 : U-G Ws/Ws pairing antiparallel cis one_hbond 2-3 : U-G O2'/Hh O2'/C8 adjacent_5p pairing 3-4 : G-C Ww/Ww pairing antiparallel cis XIX