Figure 4From: hMMS2 serves a redundant role in human PCNA polyubiquitinationRAD18 or UBC13 knockdown disrupts PCNA polyubiquitination. (A) Hela cells were treated the same as in Figure 3 except that cells were also transfected with siRNA targeting UBC13 and RAD18. (B) 293T cells were treated as in Figure 4B.Back to article page