Function
ELP1 (IKBKAP) is a component of the RNA polymerase II elongator complex. This multiprotein complex is associated with the RNA polymerase II (Pol II) holoenzyme and plays a crucial role in transcriptional elongation. The elongator complex possesses the enzymatic capability to catalyze the formation of carboxymethyluridine in the wobble base at position 34 within tRNAs. ELP1 is implicated in neurogenesis, specifically regulating the migration and branching of projection neurons in the developing cerebral cortex. This function is facilitated through a mechanism dependent on alpha-tubulin acetylation. Moreover, ELP1 may act as a scaffold protein, potentially assembling active IKK-MAP3K14 complexes, which comprise IKKα, IKKβ, and MAP3K14/NIK.