| Modification Notes |
NUFIP1 (Nuclear fragile X mental retardation-interacting protein 1) is a 495 amino acid protein that localizes to the nucleus and can interact with FMR1 (fragile X mental retardation protein) and BRCA1, a breast and ovarian-specific tumor suppressor. Through its interaction with FMR1, NUFIP1 is thought to shuttle specific mRNPs to active neuronal synapses, thereby regulating the translation of synaptic plasticity-related mRNA. The close interaction of NUFIP1 with FMR1, a protein that is essential for proper dendritic spine maturation, suggests close involvement in neuronal development. Interaction of NUFIP1 with BRCA1 results in the formation of a complex which binds the positive elongation factor P-TEFb, thus stimulating RNA polymerase II (pol II) transcription. When associated with BRAC1, NUFIP1 acts as a transcriptional activator contributing to tumor suppressor gene expression. NUFIP1 contains 1 C2H2-type zinc finger and is expressed throughout the body. |