{"product_id":"recombinant-human-glutaminyl-peptide-cyclotransferase-qpct-bhp10509041","title":"Recombinant Human Glutaminyl-peptide cyclotransferase (QPCT)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eRecombinant Human Glutaminyl-peptide cyclotransferase (QPCT) is a recombinant protein reagent derived from Homo sapiens (Human) and produced in Yeast. It is commonly used to support Neuroscience research by enabling enzyme activity assays, kinetics\/structure–function studies and inhibitor or substrate screening in controlled in vitro settings.\u003c\/p\u003e \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExpressed region:\u003c\/strong\u003e 29-361aa. Region selection can focus on functional domains, improve solubility, or isolate interaction surfaces for targeted studies.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExpression system:\u003c\/strong\u003e Yeast. Expression host can influence folding and the presence\/absence of post-translational modifications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTag \/ fusion:\u003c\/strong\u003e N-terminal 10xHis-tagged. Tags can support purification and detection; evaluate potential tag effects when studying sensitive interactions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolecular weight (reported):\u003c\/strong\u003e 40.4 kDa. Apparent size may vary with tags, processing, and gel conditions.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWhen comparing results across batches or platforms, interpret signals in the context of construct design (region, tags) and expression host, especially for modification-dependent interactions.\u003c\/p\u003e \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003eThe gene commonly associated with this target is \u003cstrong\u003eQPCT\u003c\/strong\u003e. QPCT refers to a protein target that is studied across multiple biological contexts; annotations and nomenclature can vary by species and isoform. This product corresponds to the Homo sapiens (Human) sequence context, which can be important when comparing homologs or orthologs across model systems. For curated functional annotations, domains, and sequence features, consult primary databases (e.g., UniProt\/NCBI) and the recent literature for the specific organism and isoform.\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e \u003cli\u003eLinking protein expression or modification states to neuronal activity, synaptic plasticity, and circuit phenotypes.\u003c\/li\u003e \u003cli\u003eStudying receptor\/ligand or scaffolding interactions that influence synapse organization and signaling.\u003c\/li\u003e \u003cli\u003eDeveloping quantitative assays to track neurodegeneration- or injury-associated molecular changes.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRelevance:\u003c\/strong\u003e Responsible for the biosynthesis of pyroglutamyl peptides. Has a bias against acidic and tryptophan residues adjacent to the N-terminal glutaminyl residue and a lack of importance of chain length after the second residue. Also catalyzes N-terminal pyroglutamate formation. In vitro, catalyzes pyroglutamate formation of N-terminally truncated form of APP amyloid-beta peptides [Glu-3]-beta-amyloid. May be involved in the N-terminal pyroglutamate formation of several amyloid-related plaque-forming peptides.\u003c\/p\u003e \u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e \u003cli\u003eEnzyme activity assays and kinetics measurements with defined substrates\/cofactors.\u003c\/li\u003e \u003cli\u003eInhibitor, activator, or substrate screening in biochemical assay formats.\u003c\/li\u003e \u003cli\u003eStructure–function analysis to interpret how sequence changes impact catalytic performance.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eIn quantitative assay development, changes in binding or activity readouts are typically interpreted relative to appropriate negative\/positive controls and, where possible, orthogonal assay formats that support the same conclusion.\u003c\/p\u003e \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e \u003cli\u003eRecombinant constructs may represent a defined region (domain) rather than the full-length protein; interpret results in the context of the expressed region.\u003c\/li\u003e \u003cli\u003eTag or fusion elements can aid purification and detection but may influence binding surfaces or oligomerization; consider tag controls when relevant.\u003c\/li\u003e \u003cli\u003eSpecies and isoform differences can affect interaction partners and post-translational modifications; align experimental controls to the intended biological context.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- Sources (internal): - UniProtKB entry for Q16769 — UniProt — https:\/\/www.uniprot.org\/uniprotkb\/Q16769\/entry - NCBI Gene search (QPCT) — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=QPCT - PubMed search (QPCT) — NCBI — https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=QPCT - RCSB PDB search (QPCT) — RCSB PDB — https:\/\/www.rcsb.org\/search?query=QPCT - Reactome Pathway Browser — Reactome — https:\/\/reactome.org\/ --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"1 mg","offer_id":53065277145453,"sku":"CSB-YP019135HU-1MG","price":2310.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53065397371245,"sku":"CSB-YP019135HU-100UG","price":516.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53065397404013,"sku":"CSB-YP019135HU-20UG","price":276.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-YP019135HU-SDS.jpg?v=1772476413","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-human-glutaminyl-peptide-cyclotransferase-qpct-bhp10509041","provider":"BioHippo","version":"1.0","type":"link"}