{"product_id":"recombinant-human-papillomavirus-type-53-protein-e7-e7-bhp10516060","title":"Recombinant Human papillomavirus type 53  Protein E7 (E7)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eRecombinant Human papillomavirus type 53  Protein E7 (E7) is a recombinant protein preparation derived from Human papillomavirus type 53. It is commonly used as a defined reagent for assay development, binding studies, and analytical controls where consistent protein specifications are required.\u003c\/p\u003e\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpressed region:\u003c\/strong\u003e 1-105aa.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression system:\u003c\/strong\u003e E.coli (may influence folding and post-translational modifications).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTag\/format:\u003c\/strong\u003e C-terminal 6xHis-tagged; Liquid or Lyophilized powder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpected size:\u003c\/strong\u003e 19.1 kDa (as provided).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e Greater than 95% as determined by SDS-PAGE.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRegion choice, expression system, and tag\/format can influence folding, post-translational modifications, and interaction behavior in downstream assays.\u003c\/p\u003e\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cp\u003ePlays a role in viral genome replication by driving entry of quiescent cells into the cell cycle. Stimulation of progression from G1 to S phase allows the virus to efficiently use the cellular DNA replicating machinery to achieve viral genome replication. E7 protein has both transforming and trans-activating activities. Induces the disassembly of the E2F1 transcription factor from RB1, with subsequent transcriptional activation of E2F1-regulated S-phase genes. Interferes with host histone deacetylation mediated by HDAC1 and HDAC2, leading to transcription activation. Also plays a role in the inhibition of both antiviral and antiproliferative functions of host interferon alpha. Interaction with host TMEM173\/STING impairs the ability of TMEM173\/STING to sense cytosolic DNA and promote the production of type I interferon (IFN-alpha and IFN-beta)\u003c\/p\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAntigen design and domain selection to better capture neutralizing versus non-neutralizing antibody responses.\u003c\/li\u003e\n\u003cli\u003eHigh-throughput serology and antibody screening using standardized antigens and plate-based formats.\u003c\/li\u003e\n\u003cli\u003eIntegrating binding kinetics with epitope mapping to support variant-aware immunology studies.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoat plates with HPV53-E7 antigen for ELISA antibody titration (serum\/plasma).\u003c\/li\u003e\n\u003cli\u003eScreen anti-HPV53-E7 antibodies by indirect ELISA and immunoblot readouts.\u003c\/li\u003e\n\u003cli\u003eMap antigenic epitopes using HPV53-E7 fragments\/domains (in vitro binding assays).\u003c\/li\u003e\n\u003cli\u003eDevelop antigen-capture assays using HPV53-E7 as a standard (spike-in controls).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInterpret results in the context of the biological system, assay format, and any known domain\/isoform constraints for the target.\u003c\/p\u003e\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAntigenic proteins may contain immunodominant regions; domain choice can affect assay readouts and cross-reactivity.\u003c\/li\u003e\n\u003cli\u003eInclude relevant negative controls (e.g., unrelated antigens) and dilution series to support interpretation of binding signals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- Sources (internal): - UniProtKB entry (P36832) — UniProt: https:\/\/www.uniprot.org\/uniprotkb\/P36832 - NCBI Gene search (E7) — NCBI: https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=E7 - PubMed search — NLM: https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=HPV53-E7 - Reactome pathway browser — Reactome: https:\/\/reactome.org\/ - InterPro protein family resource — EMBL-EBI: https:\/\/www.ebi.ac.uk\/interpro\/ --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"1 mg","offer_id":53059305636205,"sku":"CSB-EP327601HNZ-1MG","price":1812.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53059455091053,"sku":"CSB-EP327601HNZ-100UG","price":419.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53059455123821,"sku":"CSB-EP327601HNZ-20UG","price":224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-EP327601HNZ-SDS.jpg?v=1772280365","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-human-papillomavirus-type-53-protein-e7-e7-bhp10516060","provider":"BioHippo","version":"1.0","type":"link"}