Figure 7. ALIX dimerization is important for HIV-1 budding.
HIV-1 particle release detected upon expression of RFP-ALIXV-PRD wild type and the dimerization mutants.
(A) Expression of RFP-ALIXVmut1-PRD reverses the dominant negative effect observed for expression of wild type RFP-ALIXV-PRD. Lane 1, vector control; lane 2, wild type RFP-ALIXV-PRD; lane 3, RFP-ALIXVmut1-PRD. Detection of extracellular Gag levels (virions, left panel) and intracellular Gag levels (right panels) are shown.
(B) Expression of RFP-ALIXVmut2-PRD does not influence the dominant negative effect observed for expression of wild type RFP-ALIXV-PRD. Lane 1, vector control; lane 2, wild type RFP-ALIXV-PRD; lane 3, RFP-ALIXVmut2-PRD.
(C) Expression levels of RFP-ALIXV-PRD are shown for wild type (lane 2) and RFP-ALIXVmut1-PRD (lane 3) expression (lane 1, RFP vector expression control).