Anti-BRN3A/POU4F1 Antibody Picoband®

POU domain, class 4, transcription factor 1 (POU4F1), also known as brain-specific homeobox/POU domain protein 3A (BRN3A), homeobox/POU domain protein RDC-1 or Oct-T1, is a protein that in humans is encoded by the POU4F1 gene. It is mapped to 13q31.1. This gene encodes a member of the POU-IV class of neural transcription factors. This protein is expressed in a subset of retinal ganglion cells and may be involved in the developing sensory nervous system. This protein may also promote the growth of cervical tumors. A translocation of this gene is associated with some adult acute myeloid leukemias.

Cell Type Marker, Developmental Families, Domain Families, Epigenetics and Nuclear Signaling, Neurogenesis, Neurology Process, Neuroscience, Transcription

Multifunctional transcription factor with different regions mediating its different effects. Acts by binding (via its C-terminal domain) to sequences related to the consensus octamer motif 5'-ATGCAAAT-3' in the regulatory regions of its target genes. Regulates the expression of specific genes involved in differentiation and survival within a subset of neuronal lineages. It has been shown that activation of some of these genes requires its N-terminal domain, maybe through a neuronal-specific cofactor. Ativates BCL2 expression and protects neuronal cells from apoptosis (via the N-terminal domain) . Induces neuronal process outgrowth and the coordinate expression of genes encoding synaptic proteins. Exerts its major developmental effects in somatosensory neurons and in brainstem nuclei involved in motor control. Stimulates the binding affinity of the nuclear estrogene receptor ESR1 to DNA estrogen response element (ERE), and hence modulates ESR1-induced transcriptional activity. May positively regulate POU4F2 and POU4F3. Regulates dorsal root ganglion sensory neuron specification and axonal projection into the spinal cord. Plays a role in TNFSF11-mediated terminal osteoclast differentiation. Negatively regulates its own expression interacting ly with a highly conserved autoregulatory domain surrounding the transcription initiation site.

1. Calissano, M., Latchman, D. S. Functional interaction between the small GTP-binding protein Rin and the N-terminal of Brn-3a transcription factor. Oncogene 22: 5408-5414, 2003. 2. Still, I. H., Cowell, J. The Brn-3a transcription factor gene (POU4F1) maps close to the locus for the variant late infantile form of neuronal ceroid-lipofuscinosis. Cytogenet. Cell Genet. 74: 225-226, 1996. 3. Xiang, M., Zhou, L., Macke, J. P., Yoshioka, T., Hendry, S. H. C., Eddy, R. L., Shows, T. B., Nathans, J. The Brn-3 family of POU-domain factors: primary structure, binding specificity, and expression in subsets of retinal ganglion cells and somatosensory neurons. J. Neurosci. 15: 4762-4785, 1995.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.