{"product_id":"anti-caspase-4-casp4-antibody-picoband-bha21001547","title":"Anti-Caspase 4\/CASP4 Antibody Picoband®","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eThis antibody is intended for detection of \u003cstrong\u003eCASP4 (Peroxisomal multifunctional enzyme type 2)\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-Caspase 4\/CASP4 Antibody Picoband® catalog # A02941-1. 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 Caspase 4 recombinant protein (Position: H111-R194). (reported region: H111-R194).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolecular weight context:\u003c\/strong\u003e reported MW: 48 kDa; calculated MW: 79686 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\u003ePeroxisomal multifunctional enzyme type 2; caspase 4, apoptosis-related cysteine peptidase. Caspase 4 is an enzyme that proteolytically cleaves other proteins at an aspartic acid residue, and belongs to a family of cysteine proteases called caspases. The Caspase 4 gene is mapped to a P1 clone containing the ICE gene, which is located at chromosome 11q22.2-q22.3. It contains 8 coding exons. The function of caspase 4 is not fully known, but it is believed to be an inflammatory caspase, along with caspase 1, caspase 5 (and the murine homolog caspase 11), with a role in the immune system. Functional note: Inflammatory caspase (PubMed:7797510, PubMed:23516580, PubMed:25119034). Essential effector of NLRP3 inflammasome- dependent CASP1 activation and IL1B and IL18 secretion in response to non-canonical activators, such as UVB radiation, cholera enterotoxin subunit B and cytosolic LPS (PubMed:22246630, PubMed:26174085, PubMed:26173988, PubMed:26508369, PubMed:25964352). Independently of NLRP3 inflammasome and CASP1, promotes pyroptosis, through GSDMD cleavage and activation, and IL1A, IL18 and HMGB1 release in response to non-canonical inflammasome activators (PubMed:24879791, PubMed:25964352). Plays a crucial role in the restriction of Salmonella typhimurium replication in colonic epithelial cells during infection (PubMed:25121752). In later stages of the infection, LPS from cytosolic Salmonella triggers CASP4 activation, which ultimately results in pyroptosis of infected cells and their extrusion into the gut lumen, as well as in IL18 secretion. Pyroptosis limits bacterial replication, while cytokine secretion promotes the recruitment and activation of immune cells and triggers mucosal inflammation. Involved in LPS-induced IL6 secretion; this activity may not require caspase enzymatic activity (PubMed:26508369). Involved in cell death induced by endoplasmic reticulum stress and by treatment with cytotoxic APP peptides found Alzheimer's patient brains (PubMed:15123740, PubMed:22246630, PubMed:23661706). Activated by binding to LPS without the need of an upstream sensor (PubMed:25119034). Does not ly process IL1B (PubMed:7743998, PubMed:7797592, PubMed:7797510). During non- canonical inflammasome activation, cuts MB21D1 and may play a role in the regulation of antiviral innate immune activation (PubMed:28314590). Reported localization: Cytoplasm, cytosol. Expression\/tissue context: Widely expressed, including in keratinocytes and colonic and small intestinal epithelial cells (at protein level). Not detected in brain.\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eApoptosis: Researchers commonly examine how CASP4 (Peroxisomal multifunctional enzyme type 2) relates to this theme using model systems and orthogonal readouts.\u003c\/li\u003e\n\u003cli\u003eApoptotic Markers: Researchers commonly examine how CASP4 (Peroxisomal multifunctional enzyme type 2) relates to this theme using model systems and orthogonal readouts.\u003c\/li\u003e\n\u003cli\u003eCancer: Researchers commonly examine how CASP4 (Peroxisomal multifunctional enzyme type 2) 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 CASP4 (Peroxisomal multifunctional enzyme type 2) levels across conditions; band patterns may reflect isoforms and processing.\u003c\/li\u003e\n\u003cli\u003eIHC\/IHC-F: assess spatial distribution of CASP4 (Peroxisomal multifunctional enzyme type 2) across tissue regions and cell types using matched controls.\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\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 P49662: https:\/\/www.uniprot.org\/uniprotkb\/P49662\/entry - PubMed search (CASP4): https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=CASP4 - NCBI Gene search (CASP4): https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=CASP4 - Antibody validation concepts (NIH): https:\/\/www.nih.gov\/research-training\/rigor-reproducibility --\u003e","brand":"Boster Bio","offers":[{"title":"100 ug\/vial \/ Unconjugated","offer_id":53066865607021,"sku":"A02941-1","price":370.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Biotin","offer_id":53067448811885,"sku":"A02941-1-Biotin","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Cy3","offer_id":53067448844653,"sku":"A02941-1-Cy3","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro488","offer_id":53067448877421,"sku":"A02941-1-Fluoro488","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro550","offer_id":53067448910189,"sku":"A02941-1-Fluoro550","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro594","offer_id":53067448942957,"sku":"A02941-1-Fluoro594","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ FITC","offer_id":53067448975725,"sku":"A02941-1-FITC","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ HRP","offer_id":53067449008493,"sku":"A02941-1-HRP","price":570.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ APC","offer_id":53067449041261,"sku":"A02941-1-APC","price":820.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ PE","offer_id":53067449074029,"sku":"A02941-1-PE","price":820.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Fluoro647","offer_id":53067449106797,"sku":"A02941-1-Fluoro647","price":670.0,"currency_code":"USD","in_stock":true},{"title":"100 ug\/vial \/ Carrier Free","offer_id":53067449139565,"sku":"A02941-1-carrier-free","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/A02941-1-Caspase_4-primary-antibodies-WB-testing-1.jpg?v=1772608348","url":"https:\/\/www.ebiohippo.com\/products\/anti-caspase-4-casp4-antibody-picoband-bha21001547","provider":"BioHippo","version":"1.0","type":"link"}