Regulatory Factor X, 3 (RFX3) Antibody – Rabbit Polyclonal

This gene is a member of the regulatory factor X gene family, which encodes transcription factors that contain a highly-conserved winged helix DNA binding domain. The protein encoded by this gene is structurally related to regulatory factors X1, X2, X4, and X5. It is a transcriptional activator that can bind DNA as a monomer or as a heterodimer with other RFX family members. Multiple transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Aug 2013]

RFX3: Transcription factor required for ciliogenesis and islet cell differentiation during endocrine pancreas development. Essential for the differentiation of nodal monocilia and left- right asymmetry specification during embryogenesis. Required for the biogenesis of motile cilia by governing growth and beating efficiency of motile cells. Also required for ciliated ependymal cell differentiation. Regulates the expression of genes involved in ciliary assembly (DYNC2LI1, FOXJ1 and BBS4) and genes involved in ciliary motility (DNAH11, DNAH9 and DNAH5). Together with RFX6, participates in the differentiation of 4 of the 5 islet cell types during endocrine pancreas development, with the exception of pancreatic PP (polypeptide-producing) cells. Regulates transcription by forming a heterodimer with another RFX protein and binding to the X-box in the promoter of target genes. Acts as a transcription factor. Represses transcription of MAP1A in non-neuronal cells but not in neuronal cells. Belongs to the RFX family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription, coactivator/corepressor; DNA-binding

Chromosomal Location of Human Ortholog: 9p24.2

Cellular Component: transcription factor complex; nuclear chromatin; nucleus

Molecular Function: RNA polymerase II transcription factor activity, enhancer binding; protein binding; DNA binding; transcription factor activity

Biological Process: transcription from RNA polymerase II promoter; regulation of transcription from RNA polymerase II promoter; regulation of transcription, DNA-dependent; positive regulation of transcription, DNA-dependent; cell maturation; cilium biogenesis; positive regulation of transcription from RNA polymerase II promoter; negative regulation of transcription, DNA-dependent; endocrine pancreas development; regulation of insulin secretion