{"product_id":"pdia3-antibody-erp57-protein-disulfide-isomerase-a3-bha17105396","title":"PDIA3 Antibody \/ ERp57 \/ Protein disulfide-isomerase A3","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003ePDIA3 Antibody \/ ERp57 \/ Protein disulfide-isomerase A3 is a research-use-only Rabbit polyclonal (rabbit origin) Rabbit IgG directed against \u003cstrong\u003ePDIA3 \/ ERp57 \/ Protein disulfide-isomerase A3\u003c\/strong\u003e. It is supplied for interpretation-focused detection and comparative profiling in WB, IHC, IF, ICC, FACS. Reported localization context: Cytoplasmic, membrane.\u003c\/p\u003e\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget context:\u003c\/strong\u003e This antibody is raised against \u003cem\u003eAmino acids RELSDFISYLQREATNPPVIQEEKPKKKKKAQEDL of human PDIA3\/ERp57 were used as the immunogen for the PDIA3 antibody.\u003c\/em\u003e. Epitope context matters because isoforms, processing, and post-translational modifications can change what is accessible in a given assay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Antigen affinity purified. Format influences background and compatibility with different detection chemistries; conjugated formats (when present) can simplify multiplexing and reduce reliance on secondary reagents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecies reactivity:\u003c\/strong\u003e Human, Mouse, Rat. Cross-species performance can vary with sequence divergence and epitope conservation, so interpretation should be anchored with appropriate biological controls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocalization:\u003c\/strong\u003e Cytoplasmic, membrane. Subcellular compartment context can help guide expectations in imaging assays and informs fractionation-based comparisons in lysate workflows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e WB, IHC, IF, ICC, FACS. These indicate assay contexts where the antibody is commonly applied; actual performance depends on sample type and processing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePolyclonal reagents can differ in how they recognize epitope features. Monoclonal antibodies often provide more consistent epitope targeting across lots, while polyclonal preparations may broaden recognition across related epitope variants. \u003c\/p\u003e\n\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePDIA3 \/ ERp57 \/ Protein disulfide-isomerase A3\u003c\/strong\u003e refers to the gene\/protein target stated in the product record. Protein targets can exhibit context-dependent expression, regulated turnover, isoform diversity, and post-translational modifications that affect apparent molecular weight and epitope accessibility. For curated functional annotation, sequence features, and expression context, consult \u003ca href=\"https:\/\/www.uniprot.org\/uniprotkb\/P30101\/entry\"\u003eUniProtKB P30101\u003c\/a\u003e, \u003ca href=\"https:\/\/www.ensembl.org\/\"\u003eEnsembl\u003c\/a\u003e, and \u003ca href=\"https:\/\/www.proteinatlas.org\/\"\u003eHuman Protein Atlas\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIntegrating antibody-based detection with single-cell and spatial atlasing efforts to connect RNA programs with protein-level abundance and localization in defined cell states.\u003c\/li\u003e\n\u003cli\u003eExpanding multiplexed imaging and high-content screening, where reagent specificity, cross-reactivity risk, and channel design (including direct conjugates) become central to interpretation.\u003c\/li\u003e\n\u003cli\u003eGrowing emphasis on reproducibility and application-specific validation frameworks (e.g., genetic perturbation controls, orthogonal measurements, and independent antibody strategies) when drawing mechanistic conclusions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWestern blot (WB):\u003c\/strong\u003e commonly used to compare relative abundance\/size (e.g., band intensity or mobility shifts) between conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunohistochemistry (IHC):\u003c\/strong\u003e commonly used to compare tissue- and cell-type–specific expression patterns in situ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunofluorescence (IF):\u003c\/strong\u003e commonly used to compare subcellular localization patterns and redistribution across stimuli or phenotypes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunocytochemistry (ICC):\u003c\/strong\u003e commonly used to compare cellular distribution and cell-to-cell heterogeneity in cultured cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFACS:\u003c\/strong\u003e commonly used for qualitative\/quantitative detection where compatible with the assay context.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInterpretation typically focuses on relative differences (presence\/absence, fold-changes, compartment shifts, or population-level shifts) rather than absolute quantitation. When signal changes are observed, they may reflect altered expression, altered localization\/trafficking, changes in modification state, or differences in sample composition; orthogonal readouts and appropriate controls help distinguish these possibilities.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication details (record-specific):\u003c\/strong\u003e Western blot: 0.1-0.5ug\/ml,Immunohistochemistry (FFPE): 0.5-1ug\/ml,Immunohistochemistry (Frozen): 0.5-1ug\/ml,Immunofluorescence: 2-4ug\/ml,Flow cytometry: 1-3ug\/million cells\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication notes (record-specific):\u003c\/strong\u003e Optimal dilution of the PDIA3 antibody should be determined by the researcher.\u003c\/p\u003e\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct description (record-specific):\u003c\/strong\u003e PDIA3 (Protein disulfide isomerase family A, member 3), also called GRP58, Erp57 or ER60, is an isomerase enzyme. It is mapped on 15q15.3. PDIA3 is also part of the major histocompatibility complex (MHC) class I peptide-loading complex, which is essential for formation of the final antigen conformation and export from the endoplasmic reticulum to the cell surface. This gene encodes a protein of the endoplasmic reticulum that interacts with lectin chaperones calreticulin and calnexin to modulate folding of newly synthesized glycoproteins. The protein was once thought to be a phospholipase; however, it has been demonstrated that the protein actually has protein disulfide isomerase activity. It is thought that complexes of lectins and this protein mediate protein folding by promoting formation of disulfide bonds in their glycoprotein substrates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotential confounders:\u003c\/strong\u003e isoforms, proteolytic processing, and PTMs can change epitope presentation and apparent size; fixation\/denaturation state can also expose or mask epitopes. Species differences near the epitope may affect cross-reactivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl concepts:\u003c\/strong\u003e include genetic perturbation (KO\/KD) or overexpression comparisons, orthogonal measurement (e.g., transcript or proteomics), and independent antibody\/epitope strategies. For conjugated reagents, include staining-only\/background controls appropriate to the detection chemistry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImmunogen\/epitope context is described as: \u003cem\u003eAmino acids RELSDFISYLQREATNPPVIQEEKPKKKKKAQEDL of human PDIA3\/ERp57 were used as the immunogen for the PDIA3 antibody.\u003c\/em\u003e. Monoclonal and polyclonal formats differ in epitope breadth; this can influence sensitivity to sequence variants, isoforms, or PTM-dependent recognition.\u003c\/p\u003e\n\u003c!-- Sources (internal):\n- UniProtKB entry P30101 (UniProt Consortium): https:\/\/www.uniprot.org\/uniprotkb\/P30101\/entry\n- Ensembl genome browser (EMBL-EBI \/ Wellcome Sanger): https:\/\/www.ensembl.org\/\n- The Human Protein Atlas (KTH \/ SciLifeLab): https:\/\/www.proteinatlas.org\/\n- A proposal for validation of antibodies (Uhlén et al., Nature Methods, 2016): https:\/\/www.nature.com\/articles\/nmeth.3995.pdf\n- Getting to reproducible antibodies: the rationale for sequenced recombinant characterized reagents (Bradbury \u0026 Plückthun, PEDS, 2015): https:\/\/academic.oup.com\/peds\/article\/28\/10\/303\/1478378\n- Standardize antibodies used in research (Bradbury, Plückthun et al., Nature, 2015): https:\/\/www.nature.com\/articles\/518027a.pdf\n--\u003e","brand":"NSJ Bioreagents","offers":[{"title":"0.5mg\/ml if reconstituted with 0.2ml sterile DI water \/ 100 ug","offer_id":53210401210733,"sku":"R32052","price":462.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/get_image_47338334-9f63-4f0d-89f1-af6addb326df.jpg?v=1775785675","url":"https:\/\/www.ebiohippo.com\/products\/pdia3-antibody-erp57-protein-disulfide-isomerase-a3-bha17105396","provider":"BioHippo","version":"1.0","type":"link"}