{"product_id":"recombinant-fruit-fly-accessory-gland-specific-peptide-70a-sp-bhp10503467","title":"Recombinant Fruit fly Accessory gland-specific peptide 70A (SP)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eRecombinant Fruit fly Accessory gland-specific peptide 70A (SP) is a recombinant protein reagent for research-use applications such as assay development, binding studies, and mechanistic experiments. It corresponds to \u003cstrong\u003eSP\u003c\/strong\u003e (Drosophila melanogaster (Fruit fly)) and is intended for RUO workflows where a defined protein standard or functional input is needed.\u003c\/p\u003e\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression system:\u003c\/strong\u003e Yeast (expression context can influence folding and PTMs).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression region:\u003c\/strong\u003e 20-55aa (region choice can affect activity and binding readouts).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConjugate(s)\/tag:\u003c\/strong\u003e Tag-Free (can support detection or purification depending on format).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular weight:\u003c\/strong\u003e 4.3 kDa (useful for interpreting gel migration and size-exclusion profiles).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen comparing results across assays, consider that expression system and expressed region can alter glycosylation, disulfide formation, and oligomerization state, which may shift apparent potency or binding behavior in vitro.\u003c\/p\u003e\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cp\u003eMale seminal protein which triggers short- and long-term post-mating behavioral responses (PMR) in female Drosophila (PubMed:3135120, PubMed:19249273, PubMed:20308537, PubMed:19793753, PubMed:15694303, PubMed:24089336). Binds initially to sperm where it is later cleaved to release an active peptide within the female reproductive tract. Signals via the sex peptide receptor (SPR) in female flies; may also act via other receptors (PubMed:20458515, PubMed:20308537, PubMed:24089336). Moderates the activity of distinct neuronal circuitries in the female genital tract to promote specific PMRs including: enhanced ovulation, increased egg laying rate, increased feeding\/foraging rate, induced antimicrobial peptide synthesis, reduced mating receptivity, reduced day-time sleep and reduced lifespan in multiple mated females (PubMed:3135120, PubMed:15694303, PubMed:19249273, PubMed:19793753, PubMed:24089336).\u003c\/p\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReagent standardization: using recombinant proteins as reference materials for quantitative calibration and cross-study comparability.\u003c\/li\u003e\n\u003cli\u003eInteraction-focused studies: mapping binding partners, affinity changes, and structure–function relationships across variants or domains.\u003c\/li\u003e\n\u003cli\u003eMulti-omic readouts: combining recombinant perturbations with transcript, protein, and functional endpoints to connect mechanism to phenotype.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAssay development and validation: use as a defined input or standard where protein identity is required.\u003c\/li\u003e\n\u003cli\u003eBinding studies: evaluate interaction strength and specificity using plate-based or biophysical formats.\u003c\/li\u003e\n\u003cli\u003eCell-response profiling: add protein to cultured cells and interpret downstream marker changes with appropriate controls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInterpretation is most robust when signal changes are evaluated relative to matched controls (buffer-only, unrelated protein controls, or pathway controls) and when readouts are compared across dose and time.\u003c\/p\u003e\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIsoforms and PTMs can influence binding and activity; ensure the expressed region and expression system match your experimental needs.\u003c\/li\u003e\n\u003cli\u003eSpecies differences may affect receptor binding or antibody recognition; confirm species\/source alignment with your model.\u003c\/li\u003e\n\u003cli\u003eUse concept-level controls such as negative controls (no protein), matrix controls, or orthogonal readouts to support conclusions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- Sources (internal): - UniProt keyword search: https:\/\/www.uniprot.org\/uniprotkb?query=SP - NCBI Gene search: https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=SP - PubMed search: https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=SP - Ensembl search: https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=SP - Reactome Pathway Browser: https:\/\/reactome.org\/content\/query?q=SP --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"1 mg","offer_id":53053024174445,"sku":"CSB-YP356570DLU-1MG","price":2640.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53053154525549,"sku":"CSB-YP356570DLU-100UG","price":742.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53053154558317,"sku":"CSB-YP356570DLU-20UG","price":472.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-YP356570DLU-SDS.jpg?v=1772172805","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-fruit-fly-accessory-gland-specific-peptide-70a-sp-bhp10503467","provider":"BioHippo","version":"1.0","type":"link"}