{"product_id":"calreticulin-antibody-bha17110212","title":"Calreticulin Antibody","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eCalreticulin Antibody is a research-use antibody directed against \u003cstrong\u003eCALRETICULIN\u003c\/strong\u003e. It is supplied for use in common immunoassay contexts such as WB, IHC-P, FACS, Direct ELISA (RUO).\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \n\u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e CALRETICULIN.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eDescription (provided):\u003c\/strong\u003e Calreticulin, also known as calregulin, CRP55, CaBP3, calsequestrin-like protein, and endoplasmic reticulum resident protein 60 (ERp60) is a protein that in humans is encoded by the CALR gene.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eAntibody type:\u003c\/strong\u003e Rabbit, Polyclonal (rabbit origin), Rabbit IgG.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Antigen affinity purified; Affinity purified.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eReported\/predicted localization:\u003c\/strong\u003e Cytoplasmic.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eSpecies reactivity:\u003c\/strong\u003e tested: Human, Mouse, Rat.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eImmunogen (if provided):\u003c\/strong\u003e A human recombinant protein (amino acids E18-S323) was used as the immunogen for the Calreticulin antibody..\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe information above helps you match the antibody format to your assay context, interpret species-dependent differences, and anticipate how epitope context (isoforms, PTMs, or conformational state) may influence signal.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eCalreticulin, also known as calregulin, CRP55, CaBP3, calsequestrin-like protein, and endoplasmic reticulum resident protein 60 (ERp60) is a protein that in humans is encoded by the CALR gene. It is mapped to 19p13.13. Calreticulin is a multifunctional protein that acts as a major Ca(2+)-binding (storage) protein in the lumen of the endoplasmic reticulum. It is also found in the nucleus, suggesting that it may have a role in transcription regulation. Calreticulin binds to the synthetic peptide KLGFFKR, which is almost identical to an amino acid sequence in the DNA-binding domain of the superfamily of nuclear receptors. Calreticulin binds to antibodies in certain sera of systemic lupus and Sjogren patients which contain anti-Ro\/SSA antibodies, it is highly conserved among species, and it is located in the endoplasmic and sarcoplasmic reticulum where it may bind calcium. The amino terminus of calreticulin interacts with the DNA-binding domain of the glucocorticoid receptor and prevents the receptor from binding to its specific glucocorticoid response element. Calreticulin can inhibit the binding of androgen receptor to its hormone-responsive DNA element and can inhibit androgen receptor and retinoic acid receptor transcriptional activities in vivo, as well as retinoic acid-induced neuronal differentiation. Thus, calreticulin can act as an important modulator of the regulation of gene transcription by nuclear hormone receptors. Systemic lupus erythematosus is associated with increased autoantibody titers against calreticulin but calreticulin is not a Ro\/SS-A antigen. Earlier papers referred to calreticulin as an Ro\/SS-A antigen but this was later disproven. Increased autoantibody titer against human calreticulin is found in infants with complete congenital heart block of both the IgG and IgM classes.\u003c\/p\u003e\n\u003cp\u003eFor curated annotations (gene\/protein naming, domains, isoforms, and pathway links) for CALRETICULIN, consult primary databases such as UniProt, NCBI Gene, and Ensembl.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \n\u003cli\u003eContext-dependent expression studies: researchers often examine CALRETICULIN abundance and localization across perturbations (genetic, pharmacologic, or environmental) to connect phenotype to molecular changes.\u003c\/li\u003e  \u003cli\u003eReagent reproducibility: there is growing emphasis on antibody specificity checks using orthogonal approaches (e.g., genetic perturbation or independent antibodies) and transparent reporting of clone\/lot information.\u003c\/li\u003e  \u003cli\u003eMulti-modal datasets: antibody-based readouts are increasingly combined with transcriptomics and imaging to relate protein-level measurements to cell-state transitions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \n\u003cli\u003eWestern blotting (immunoblot) for relative detection of target protein abundance and apparent molecular weight.\u003c\/li\u003e  \u003cli\u003eImmunohistochemistry for spatial mapping of target expression across tissues and cell types.\u003c\/li\u003e  \u003cli\u003eFACS: commonly used to detect or compare CALRETICULIN across experimental conditions (conceptual guidance only).\u003c\/li\u003e  \u003cli\u003eDirect ELISA: commonly used to detect or compare CALRETICULIN across experimental conditions (conceptual guidance only).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen comparing conditions, interpret changes in signal in the context of sample composition, expected localization, and any known isoform complexity for the target.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \n\u003cli\u003e\n\u003cstrong\u003eIsoforms and PTMs:\u003c\/strong\u003e alternative splicing or post-translational modifications can change epitope accessibility and apparent molecular weight; interpret bands\/signals accordingly.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eCross-reactivity and matrix effects:\u003c\/strong\u003e background binding can vary by sample type, species, and blocking\/detection chemistries; include appropriate negative controls.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eControl concepts:\u003c\/strong\u003e where feasible, use genetic perturbation (KO\/KD\/overexpression), orthogonal assays, or independent antibodies to support specificity claims.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAntibody considerations:\u003c\/strong\u003e Polyclonal reagents may recognize multiple epitopes and can increase sensitivity but may show broader binding profiles, while monoclonal clones provide a single-epitope readout that can improve consistency across experiments. If a conjugate is listed, the antibody supports more direct detection workflows; otherwise, it is typically used with a compatible secondary antibody.\u003c\/p\u003e\n\n\u003c!-- Sources (internal):\n- UniProtKB entry for CALRETICULIN (UniProt): https:\/\/www.uniprot.org\/uniprotkb\/P27797\n- NCBI Gene search for CALRETICULIN (NCBI): https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=CALRETICULIN\n- Ensembl gene search for CALRETICULIN (Ensembl): https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=CALRETICULIN\n- Antibody validation “5 pillars” (Nature Methods, 2016): https:\/\/www.nature.com\/articles\/nmeth.3995\n- NIH replication \u0026 reproducibility resources (NIH): https:\/\/www.nih.gov\/replicationandreproducibility\n- Human Protein Atlas search for CALRETICULIN (HPA): https:\/\/www.proteinatlas.org\/search\/CALRETICULIN\n--\u003e","brand":"NSJ Bioreagents","offers":[{"title":"0.5mg\/ml if reconstituted with 0.2ml sterile DI water \/ 100 ug","offer_id":53044513177965,"sku":"RQ5567","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/get_image_6a27f9ad-a3ce-4bd6-b1fc-a06bd7613018.jpg?v=1771939089","url":"https:\/\/www.ebiohippo.com\/products\/calreticulin-antibody-bha17110212","provider":"BioHippo","version":"1.0","type":"link"}