Figure 3. Amino acid alignment of HPV-150 and HPV-151 E6 and E7 proteins with corresponding proteins of closely related genotypes from Betapapillomavirus species 2, 4 and 5.

The locations of zinc-binding domains (CxxC(x)₂₉CxxC) are indicated by black boxes, and the location of the pRb-binding core sequence (LxCxE) is indicated with a blue box.