Tags: Protein.
Transcriptional repressor NF-X1 is a protein that in humans is encoded by the NFX1 gene.MHC class II gene expression is controlled primarily at the transcriptional level by transcription factors that bind to the X and Y boxes two highly conserved elements in the proximal promoter of MHC class II genes. The protein encoded by this gene is a transcriptional repressor capable of binding to the conserved X box motif of HLA-DRA and other MHC class II genes in vitro.