DNA polymerases ? and ? do not directly affect Ig variable region somatic hypermutation although their absence reduces the frequency of mutations.
Schrader CE, Linehan EK, Ucher AJ, Bertocci B, Stavnezer J. DNA polymerases ? and ? do not directly affect Ig variable region somatic hypermutation although their absence reduces the frequency of mutations. DNA Repair (Amst). 2013 Dec; 12(12):1087-93.