Germinal-center associated nuclear protein (MCM3AP)

Isoform GANP: Essential for the creation of high- affinity B-cells against T-cell-dependent antigens by changing somatic hypermutation in the IgV-regions. May have stimulation- dependent DNA primase activity that would generate additional RNA primers in very rapidely proliferating cells and would support clonal growth of differentiating B-cells (By similarity).

Involved in the nuclear export of poly(A)-containing mRNAs by acting as a scaffold for the TREX-2 complex. The TREX-2 complex functions in docking export-competent ribonucleoprotein particles (mRNPs) into the atomic entrance of the nuclear pore complex (atomic basket).