Transcription pause and elongation regulators mediate somatic hypermutation
Somatic hypermutation (SHM) creates point mutations in immunoglobulin (Ig) gene variable (V) regions in activated B cells to support antibody affinity maturation1. SHM is initiated by activation induced deaminase (AID), a cytosine deaminase whose single-stranded DNA (ssDNA) substrate is thought to arise during RNA Poly...