{"product_id":"anti-stefin-b-cstb-antibody-picoband-bha21000461","title":"Anti-Stefin B\/CSTB Antibody Picoband®","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eThis antibody is intended for detection of \u003cstrong\u003eCSTB (Cystatin-B)\u003c\/strong\u003e in biological samples using common immunoassay formats. It is typically selected based on target identity, species reactivity, clonality\/clone information, and detection modality.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eVendor notes:\u003c\/em\u003e Boster Bio Anti-Stefin B\/CSTB Antibody Picoband® catalog # PB9565. Tested in ELISA, Flow Cytometry, IF, IHC ICC, WB applications. This antibody reacts with Human. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.\u003c\/p\u003e \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAntibody format:\u003c\/strong\u003e Rabbit Polyclonal Rabbit IgG\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImmunogen \/ epitope context:\u003c\/strong\u003e E. coli-derived human Stefin B recombinant protein (Position: M1-F98). Human Stefin B shares 78.6 % amino acid (aa) sequence identity with both mouse and rat Stefin B. (reported region: M1-F98).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolecular weight context:\u003c\/strong\u003e reported MW: 11 kDa; calculated MW: 11140 MW\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReactivity:\u003c\/strong\u003e Human\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e ELISA, Flow Cytometry, IF, IHC ICC, WB\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eAs a polyclonal antibody, the reagent recognizes multiple epitopes on the target, which can improve detection robustness but may increase sensitivity to sample-dependent epitope changes.\u003c\/p\u003e \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003eCystatin-B; Cystatin-B. Cystatin B (CSTB), also called STFB, is a small protein that is a member of the superfamily of cysteine protease inhibitors. It has been isolated from human spleen and liver and its amino acid sequence has been fully determined. The cystatin B gene is located on 21q22.3. It is widely distributed and is localized mostly intracellularly, but has been found extracellularly. The protein is able to form a dimer stabilized by noncovalent forces, inhibiting papain and cathepsins l, h and b. Its role is thought to be as a protector against the proteinases leaking from lysosomes. A cystatin B multiprotein complex might have a specific cerebellar function, and that the loss of this function might contribute to the etiopathogenesis of EPM1. Upon differentiation to myotubes, CSTB becomes excluded from the nucleus and lysosomes, suggesting that the subcellular distribution of CSTB is dependent on the differentiation status of the cell. Functional note: This is an intracellular thiol proteinase inhibitor. Tightly binding reversible inhibitor of cathepsins L, H and B. Reported localization: Cytoplasm . Nucleus . Expression\/tissue context: Expressed in the skin throughout the epidermis. .\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eProtease Inhibitors: Researchers commonly examine how CSTB (Cystatin-B) relates to this theme using model systems and orthogonal readouts.\u003c\/li\u003e\n\u003cli\u003eProteolysis\/Ubiquitin: Researchers commonly examine how CSTB (Cystatin-B) relates to this theme using model systems and orthogonal readouts.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCommon research applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eWestern blotting: compare relative CSTB (Cystatin-B) levels across conditions; band patterns may reflect isoforms and processing.\u003c\/li\u003e\n\u003cli\u003eIF\/ICC: evaluate subcellular localization and co-localization patterns; signal can depend on fixation\/permeabilization and epitope accessibility.\u003c\/li\u003e\n\u003cli\u003eFlow cytometry: quantify target-positive populations and shifts in expression; gating strategy and background staining controls are essential.\u003c\/li\u003e\n\u003cli\u003eELISA-compatible use: when applicable, interpret signal as relative abundance across sample sets with consistent handling and dilution strategy.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpecificity notes:\u003c\/strong\u003e No cross reactivity with other proteins.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCross-reactivity:\u003c\/strong\u003e No cross-reactivity with other proteins\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFamily \/ similarity context:\u003c\/strong\u003e Belongs to the cystatin family.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIsoforms and PTMs:\u003c\/strong\u003e Apparent size and signal patterns can differ across splice isoforms, proteolytic processing, and post-translational modifications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Include an isotype control (as relevant), no-primary control for imaging, and orthogonal validation such as KD\/KO samples when available.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- Sources (internal): - UniProt entry for P04080: https:\/\/www.uniprot.org\/uniprotkb\/P04080\/entry - PubMed search (CSTB): https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=CSTB - NCBI Gene search (CSTB): https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=CSTB - Antibody validation concepts (NIH): https:\/\/www.nih.gov\/research-training\/rigor-reproducibility --\u003e","brand":"Boster Bio","offers":[{"title":"100 ug\/vial \/ Unconjugated","offer_id":53066827071853,"sku":"PB9565","price":370.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Biotin","offer_id":53067052515693,"sku":"PB9565-Biotin","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Cy3","offer_id":53067052548461,"sku":"PB9565-Cy3","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro488","offer_id":53067052581229,"sku":"PB9565-Fluoro488","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro550","offer_id":53067052613997,"sku":"PB9565-Fluoro550","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro594","offer_id":53067052646765,"sku":"PB9565-Fluoro594","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ FITC","offer_id":53067052679533,"sku":"PB9565-FITC","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ HRP","offer_id":53067052712301,"sku":"PB9565-HRP","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ APC","offer_id":53067052745069,"sku":"PB9565-APC","price":820.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ PE","offer_id":53067052777837,"sku":"PB9565-PE","price":820.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro647","offer_id":53067052810605,"sku":"PB9565-Fluoro647","price":670.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Carrier Free","offer_id":53067052843373,"sku":"PB9565-carrier-free","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/pb9565-cstb-primary-antibodies-wb-testing-1.jpg?v=1772608153","url":"https:\/\/www.ebiohippo.com\/products\/anti-stefin-b-cstb-antibody-picoband-bha21000461","provider":"BioHippo","version":"1.0","type":"link"}