{"product_id":"recombinant-human-trna-guanine-n-7-methyltransferase-non-catalytic-subunit-wdr4-wdr4-bhp10515989","title":"Recombinant Human tRNA (guanine-N(7)-)-methyltransferase non-catalytic subunit WDR4 (WDR4)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eRecombinant Human tRNA (guanine-N(7)-)-methyltransferase non-catalytic subunit WDR4 (WDR4) is a recombinant protein preparation derived from Homo sapiens (Human). 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 2-412aa.\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 52.3 kDa (as provided).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e Greater than 85% 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\u003eNon-catalytic component of the METTL1-WDR4 methyltransferase complex required for the formation of N(7)-methylguanine in a subset of RNA species, such as tRNAs, mRNAs and microRNAs (miRNAs). In the METTL1-WDR4 methyltransferase complex, WDR4 acts as a scaffold for tRNA-binding. Required for the formation of N(7)-methylguanine at position 46 (m7G46) in a large subset of tRNAs that contain the 5'-RAGGU-3' motif within the variable loop. M7G46 interacts with C13-G22 in the D-loop to stabilize tRNA tertiary structure and protect tRNAs from decay. Also required for the formation of N(7)-methylguanine at internal sites in a subset of mRNAs. Also required for methylation of a specific subset of miRNAs, such as let-7. Independently of METTL1, also plays a role in genome stability: localizes at the DNA replication site and regulates endonucleolytic activities of FEN1\u003c\/p\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDomain- and isoform-aware assay design to improve biological interpretation across model systems.\u003c\/li\u003e\n\u003cli\u003eQuantitative workflows emphasizing calibration standards, spike-in controls, and cross-lot comparability.\u003c\/li\u003e\n\u003cli\u003eIn vitro binding\/kinetics profiling (SPR\/BLI) to connect biochemical interactions with cellular phenotypes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMeasure WDR4 enzymatic activity with defined substrates\/cofactors (in vitro assay).\u003c\/li\u003e\n\u003cli\u003eEvaluate inhibitor\/activator effects on WDR4 activity across a concentration series.\u003c\/li\u003e\n\u003cli\u003eQuantify WDR4 using calibration standards in plate-based assays (assay development).\u003c\/li\u003e\n\u003cli\u003eProfile binding interactions of WDR4 by SPR\/BLI (kinetic characterization).\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\u003eConsider species- and isoform-specific differences when comparing results across models or homologs.\u003c\/li\u003e\n\u003cli\u003eFor quantitative assays, include appropriate negative controls and matrix-matched spike-in concepts to assess non-specific signal.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- Sources (internal): - UniProtKB entry (P57081) — UniProt: https:\/\/www.uniprot.org\/uniprotkb\/P57081 - NCBI Gene search (WDR4) — NCBI: https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=WDR4 - PubMed search — NLM: https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=WDR4 - 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":53059303768429,"sku":"CSB-EP026021HU-1MG","price":2466.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53059451683181,"sku":"CSB-EP026021HU-100UG","price":578.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53059451715949,"sku":"CSB-EP026021HU-20UG","price":306.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-EP026021HU-SDS.jpg?v=1772280356","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-human-trna-guanine-n-7-methyltransferase-non-catalytic-subunit-wdr4-wdr4-bhp10515989","provider":"BioHippo","version":"1.0","type":"link"}