{"product_id":"recombinant-human-pou-domain-class-4-transcription-factor-2-pou4f2-bhp10506612","title":"Recombinant Human POU domain, class 4, transcription factor 2 (POU4F2)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThis Recombinant Protein provides recombinant \u003cstrong\u003ePOU4F2\u003c\/strong\u003e from Homo sapiens (Human), produced in E.coli (region 1-265aa). It is commonly used as a defined reagent for assay development, binding studies, and mechanistic research (RUO).\u003c\/p\u003e\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegion:\u003c\/strong\u003e 1-265aa (domain boundaries can affect binding\/activity readouts).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression host:\u003c\/strong\u003e E.coli (may differ from native PTMs\/processing).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTag(s):\u003c\/strong\u003e His, Myc (supports purification\/detection; consider tag effects in controls).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cp\u003eAlso reported as Brain-specific homeobox\/POU domain protein 3B (Brain-3B) (Brn-3B) (BRN3B). DNA-binding transcriptional regulator and coregulator that recognizes and binds to the consensus octamer binding site 5'-AT[A\/T]A[T\/A]T[A\/T]A-3' in promoter of target genes.\u003c\/p\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuantitative mapping of ligand\/receptor signaling to downstream phospho- and transcriptional programs.\u003c\/li\u003e\n\u003cli\u003eUse of recombinant standards to improve assay calibration and cross-study comparability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDNA-binding transcriptional regulator and coregulator that recognizes and binds to the consensus octamer binding site 5'-AT[A\/T]A[T\/A]T[A\/T]A-3' in promoter of target genes. Plays a fundamental role in the gene regulatory network essential for retinal ganglion cell differentiation. Cooperates with the transcription factor ISL1 to achieve RGC fate specification in the developing retina. Plays also a role in RGC axon formation and guidance by regulating gene expression of specific target genes. Plays a role in TNFSF11-mediated terminal osteoclast differentiation. Binds chromatin at promoter region of target genes.Isoform 1: Acts either as a transcriptional activator or repressor. Negatively regulates transcriptional activity of homeobox domain transcriptional factors DLX1 and DLX2, and hence prevents DLX1- and DLX2-mediated ability to promote amacrine cells specification. Involved in the positive regulation of the transcriptional factor PAX6 expression through its binding to the neuroretina-specific enhancer in neuroretina cells. Mediates positive transcriptional regulation of heat shock protein HSPB1 expression in cardiac myocytes. Positively regulates POU4F1 expression by interacting directly with a highly conserved autoregulatory domain surrounding the transcription initiation site of the POU4F1 gene promoter. Plays a role in the regulation of breast cancer cell growth by promoting transcription activation as well as repression of specific target genes. Involved in tumor breast progression and invasion. Stimulates the promoter activity of the GTP-binding protein RIT2 gene containing the octamer binding site in retinal ganglion cells. Plays also a role either as a transcriptional coactivator or corepressor. Transcriptional coactivator cooperating with transcription factors ISL1 and ISL2 to potentiate transcriptional activation of retinal ganglion cell target genes. Antagonizes the transcriptional stimulatory activity of POU4F1 by preventing its binding to the octamer motif. Binds to the octamer binding site to form a ternary complex with ISL1 in promoter of target genes.Isoform 2: Acts either as a transcriptional activator or repressor. Stimulates the promoter activity of the neuronal nicotinic acetylcholine receptor alpha CHRNA2. Negatively regulates the apoptosis regulator BAX promoter activity. Inhibits promoter activity of the neuronal intermediate filament protein alpha-internexin INA gene. Plays a role in the regulation of breast cancer cell growth by promoting transcription activation as well as repression of specific target genes. Involved in tumor breast progression and invasion. Inhibits the promoter activity of the GTP-binding protein RIT2 gene containing the octamer binding site in retinal ganglion cells. Plays also a role either as transcriptional coactivator or corepressor. Transcriptional coactivator cooperating with transcription factors TP53 to potentiate transcriptional activation of BAX promoter activity, and hence increases neuronal cell apoptosis. Antagonizes the transcriptional stimulatory activity of POU4F1 by preventing its binding to the octamer motif. Acts also as a transcriptional coactivator via its interaction with the transcription factor ESR1.\u003c\/p\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStandard curve or spike-in reference for quantitative assays involving POU4F2\u003c\/li\u003e\n\u003cli\u003eBinding interaction studies (e.g., SPR\/BLI or plate-based binding formats)\u003c\/li\u003e\n\u003cli\u003eCell-based stimulation studies with downstream marker readouts (conceptual)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRecombinant constructs may not capture all native isoforms or PTMs.\u003c\/li\u003e\n\u003cli\u003eConsider tag- or host-related effects when interpreting binding or activity.\u003c\/li\u003e\n\u003cli\u003eUse appropriate blanks and matrix\/control concepts to separate signal from background.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- Sources (internal): - UniProtKB Q12837 — UniProt — https:\/\/www.uniprot.org\/uniprotkb\/Q12837 - NCBI Gene search: POU4F2 — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=POU4F2 - Ensembl search: POU4F2 — Ensembl — https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=POU4F2 - Reactome Pathway Browser — Reactome — https:\/\/reactome.org\/ - NCBI Bookshelf — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/books\/ --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"1 mg","offer_id":53053388292461,"sku":"CSB-EP622514HU-1MG","price":2466.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53053498491245,"sku":"CSB-EP622514HU-100UG","price":578.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53053498524013,"sku":"CSB-EP622514HU-20UG","price":306.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-EP622514HU-1.jpg?v=1772177584","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-human-pou-domain-class-4-transcription-factor-2-pou4f2-bhp10506612","provider":"BioHippo","version":"1.0","type":"link"}