NFIA (Nuclear Factor I A) is a transcription factor that plays essential roles in regulating gene expression, cellular differentiation, and development. It is primarily located in the nucleus and is part of the Nuclear Factor I (NFI) family, a group of conserved DNA-binding proteins involved in transcription regulation. NFIA functions by binding to specific DNA sequences called NFIA recognition elements in gene promoters, modulating gene activity through interactions with co-regulators and chromatin-modifying enzymes.