Fig. 7From: SL1 revisited: functional analysis of the structure and conformation of HIV-1 genome RNASchema of SL1 roles on genome dimerization. a Modified structural model of SL1 based on the results. b, c Hypothesis of G243/C277 function. b The bases interact intermolecularly before DISs make kissing dimer. c The bases form base pairs to knot and stabilize an extended duplex of SL1Back to article page