Skip to main content
. 2012 Jan 24;7(1):e30939. doi: 10.1371/journal.pone.0030939

Figure 6. Model for HIV1 Vpr-mediated degradation.

Figure 6

In the absence of HIV1 Vpr expression, UNG2 engages DCAF1, is ubiquitinated and thus marked for proteasomal degradation (A). In the presence of HIV1 Vpr, CRL4DCAF1-mediated ubiquitination of UNG2 is increased because Vpr enhances the interaction between UNG2 and DCAF1 (B). In the presence of high HIV1 Vpr levels, UNG2 degradation is no longer increased and instead, UNG2 accumulates in the cell nucleus (C).