Figure 1. The nucleotide mutation pattern in productive and nonproductive heavy chain rearrangements in AICDA−/− B cells.
The individual nucleotide substitutions detected in the variable segment of (A) nonproductive VHDJH and (B) productive VHDJH rearrangements in peripheral blood B cells from 4 normal donors and 3 AICDA−/− patients are presented. The percentages of all mutations (lower panels in each group) are scored after correction for base composition of the target sequence. Transitions appear in bold face type. *Significant (p=0.03) difference between AICDA−/− and normal donors; †significant (p<0.0001) difference between transitions and transversions and significant (p<0.0008) difference in transitions between AICDA−/− and normal donor.