Residue conformations ------------------------------------------- 1 : U C3p_endo anti 2 : A C3p_endo anti 3 : G C3p_endo anti 4 : C C3p_endo anti 5 : C C2p_endo anti 6 : A C3p_endo anti Adjacent stackings ---------------------------------------------- 2-3 : adjacent_5p upward 4-5 : adjacent_5p inward Non-Adjacent stackings ------------------------------------------ Number of stackings = 2 Number of adjacent stackings = 2 Number of non adjacent stackings = 0 Base-pairs ------------------------------------------------------ 1-6 : U-A Ww/Ww pairing antiparallel cis XX 2-5 : A-C Ww/Ww pairing parallel trans XXVI 3-4 : G-C Ww/Ww pairing antiparallel cis XIX