Immunoglobulin heavy chain (IgH) diversity is shaped by locus positioning in 3D nuclear space. Here, the authors demonstrate that a highly transcribed VH gene drives Igh contact with nuclear speckles, boosting chromatin accessibility, facilitating V to DJ rearrangement and supporting allelic exclusion.
- Saurabh Priyadarshi
- Khalid H. Bhat
- Amy L. Kenter