Nuclear factor interleukin 3 regulated (NFIL3)

Nuclear factor interleukin 3 regulated (NFIL3) is a bZIP (basic leucine zipper) transcription factor that functions as both a transcriptional repressor and activator depending on context[1][3][4]. It homodimerizes via a leucine zipper and binds specific DNA motifs (e.g., TTACGTAA) in gene promoters to regulate transcription, including the critical IL-3 gene in T-cells[1][4]. NFIL3 is essential in the control of immune cell differentiation (notably natural killer cell precursors), neural regeneration, and circadian rhythm regulation by repressing circadian clock genes such as PER1 and PER2[1][4]. Mutations in its DNA-binding or dimerization domains can disrupt these functions and are linked to altered immune responses, sleep/circadian disorders, inflammation, certain metabolic disorders, and possibly cancer[1][4][5]. Although not yet a direct therapeutic target, its role in central regulatory pathways makes it a potential candidate for drug development, primarily through modulation of its DNA binding or dimerization surfaces[1].

Other names

E4BP4IL3BP1NFIL3ANF-IL3AE4 promoter-binding protein 4Interleukin-3 promoter transcriptional activatorInterleukin-3-binding protein 1Transcriptional activator NF-IL3AE4 promoter-binding proteinadenovirus E4 promoter region binding protein

Not applicable (no direct drugs, but theoretically, inhibition or modulation of DNA binding, dimerization, or protein-protein interface)