Figure 2
From: The retroviral RNA dimer linkage: different structures may reflect different roles
Structure of the key elements involved in HIV-1 RNA dimerisation. 2a. Secondary structure model of the packaging signal of HIV-1Lai ([64] [65]), containing the principal DLS. 2b Proposed sequence of the RNA dimerisation process in HIV-1Lai. The initial kissing hairpin interaction (including loop B) followed by formation of the extended duplex ([1]). 2c. Loop B, one of the critical elements in the dimer interaction. The flexibility of this internal loop allows the duplex to form ([44]).