ERp57 (Endoplasmic reticulum resident protein 57; also Protein disulfide-isomerase A3/PDIA3) is a 57-60 kDa member of the protein disulfide isomerase family of proteins. Knockdown of ERp57 or antibody-targeted inhibition of the secreted form significantly impaired the secretion and accumulation of extracellular matrix. ERp57 is highly similar to other PDI family members in amino acid sequence and structural/functional domain organization. This protein plays an important role in endoplasmic reticulum quality control of newly synthesized glycoproteins, is critical in major histocompatability complex class I assembly and regulates gene expression. ERp57 has been implicated in human pathologies including cancer and Alzheimer's disease. Within aa 107 - 366, human ERp57 shares 92% aa sequence identity with mouse ERp57.
Human ERp57/PDIA3 Antibody
R&D Systems | Catalog # AF8219
Key Product Details
Species Reactivity
Validated:
Cited:
Applications
Validated:
Cited:
Label
Antibody Source
Product Specifications
Immunogen
Arg107-Lys366
Accession # P30101
Specificity
Clonality
Host
Isotype
Scientific Data Images for Human ERp57/PDIA3 Antibody
Detection of Human and Mouse ERp57/PDIA3 by Western Blot.
Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line, HEK293 human embryonic kidney cell line, and Hepa 1-6 mouse hepatoma cell line. PVDF membrane was probed with 0.2 µg/mL of Sheep Anti-Human ERp57/PDIA3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF8219) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for ERp57/PDIA3 at approximately 57 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
ERp57/PDIA3 in HeLa Human Cell Line.
ERp57/PDIA3 was detected in immersion fixed HeLa human cervical epithelial carcinoma cell line using Sheep Anti-Human ERp57/PDIA3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF8219) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Sheep IgG Secondary Antibody (red; Catalog # NL010) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
ERp57/PDIA3 in Human Liver.
ERp57/PDIA3 was detected in immersion fixed paraffin-embedded sections of human liver using Sheep Anti-Human ERp57/PDIA3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF8219) at 1 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to the cytoplasm of hepatocytes. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Detection of ERp57/PDIA3 by Western Blot
Protein kinase A (PKA) catalytic subunit alpha is localized within mitochondria of HeLa cells. (A) Representative immunoblots (n = 3) of PKA catalytic (cat) subunit, PKA regulatory (reg) subunit, the mitochondrial protein SDHa and of the cytosolic protein alpha -Tubulin with corresponding total protein load (TPL) in total cell lysate (TCL), cytosolic (Cyto) and mitochondrial (Mito) fractions isolated from HeLa cells. (B) Representative immunoblots (n = 3) of PKA cat, PKA reg, SDHa and TOM20 with corresponding total protein load (TPL) in mitochondrial fractions isolated from HeLa cells and treated as indicated. (C) Representative micrographs (n = 6) of HeLa cells expressing empty vector (pcDNA), PKA-Myc or mt-PKA-Myc and labelled with anti-Myc (green) and anti-TOM20 (red) as a mitochondrial marker. Scale bars = 5 μm. (D) Representative immunoblots (n = 3) of Myc, SDHa and alpha -Tubulin with corresponding total protein load (TPL) in TCL, cyto and mito fractions isolated from HeLa cells expressing empty vector (pcDNA), PKA-Myc or mt-PKA-Myc. (E) Representative immunoblots (n = 3) of Myc, TOM20, SDHa and SOD2 with corresponding total protein load (TPL) in mitochondrial enriched fractions isolated from HeLa cells expressing empty vector (pcDNA), PKA-Myc or mt-PKA-Myc and treated as indicated. (F) Representative immunoblots (n = 3) of Myc, PKA Cat, ATP5a, MFN2 and ERp57 with corresponding TPL in pellet and supernatant (SN) obtained after treatment of mitochondria isolated from HeLa cells expressing PKA-Myc or mt-PKA-Myc and treated as indicated. (G) Representative immunoblots (n = 5) of phospho-PKA substrates and Myc with corresponding total protein load (TPL) in mitochondrial enriched fractions isolated from HeLa cells expressing empty vector (pcDNA), PKA-Myc or mt-PKA-Myc. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/33167377), licensed under a CC-BY license. Not internally tested by R&D Systems.Detection of ERp57/PDIA3 by Western Blot
Mitochondrial matrix-localized Src regulates mitochondrial shape. a Representative immunoblotting (n = 3) of Src, cytosolic tubulin and mitochondrial SDHA in total cell lysate (TCL), cytosol- (cyto) and mitochondria- (mito) enriched fractions of Src+/+ and Src−/− MEFs, HEK293 and HeLa. b Representative immunoblotting (n = 3) of Src, the IMM protein SDHA and the OMM protein TOM20 in mitochondria-enriched fractions of HeLa cells treated as indicated. c Representative immunoblotting (n = 4) of Src, Smac-diablo, ATP5a and ERp57 in supernatant (SN) and pellet obtained from mitochondria-enriched fractions of HeLa cells treated with digitonin as indicated. d Representative micrographs (n = 3) of the plasma membrane marker wheat germ agglutinin (WGA), V5 and TOM20 labeling in Src+/+ and Src−/− mouse embryonic fibroblasts (MEFs) expressing pcDNA, Src-V5, mitochondria-targeted mtSrc-V5 and plasma membrane-targeted pmSrc-V5. e Quantitative analysis of mitochondrial morphology in region of interest (ROI) as shown in c. Scale bars: 20 μm. Data are presented as mean ± S.E.M. Data with different letters are statistically different (p < 0.05), according to one-way ANOVA followed by Tukey’s post hoc test Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/35637383), licensed under a CC-BY license. Not internally tested by R&D Systems.Detection of ERp57/PDIA3 by Western Blot
Mitochondrial matrix-localized Src regulates mitochondrial shape. a Representative immunoblotting (n = 3) of Src, cytosolic tubulin and mitochondrial SDHA in total cell lysate (TCL), cytosol- (cyto) and mitochondria- (mito) enriched fractions of Src+/+ and Src−/− MEFs, HEK293 and HeLa. b Representative immunoblotting (n = 3) of Src, the IMM protein SDHA and the OMM protein TOM20 in mitochondria-enriched fractions of HeLa cells treated as indicated. c Representative immunoblotting (n = 4) of Src, Smac-diablo, ATP5a and ERp57 in supernatant (SN) and pellet obtained from mitochondria-enriched fractions of HeLa cells treated with digitonin as indicated. d Representative micrographs (n = 3) of the plasma membrane marker wheat germ agglutinin (WGA), V5 and TOM20 labeling in Src+/+ and Src−/− mouse embryonic fibroblasts (MEFs) expressing pcDNA, Src-V5, mitochondria-targeted mtSrc-V5 and plasma membrane-targeted pmSrc-V5. e Quantitative analysis of mitochondrial morphology in region of interest (ROI) as shown in c. Scale bars: 20 μm. Data are presented as mean ± S.E.M. Data with different letters are statistically different (p < 0.05), according to one-way ANOVA followed by Tukey’s post hoc test Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/35637383), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human ERp57/PDIA3 Antibody
Immunocytochemistry
Sample: Immersion fixed HeLa human cervical epithelial carcinoma cell line
Immunohistochemistry
Sample: Immersion fixed paraffin-embedded sections of human liver
Western Blot
Sample: HeLa human cervical epithelial carcinoma cell line, HEK293 human embryonic kidney cell line, and Hepa 1‑6 mouse hepatoma cell line
Formulation, Preparation, and Storage
Purification
Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
Formulation
Shipping
Stability & Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: ERp57/PDIA3
Long Name
Alternate Names
Gene Symbol
UniProt
Additional ERp57/PDIA3 Products
Product Documents for Human ERp57/PDIA3 Antibody
Product Specific Notices for Human ERp57/PDIA3 Antibody
For research use only
Related Research Areas
Citations for Human ERp57/PDIA3 Antibody
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Antigen Retrieval Protocol (PIER)
- Antigen Retrieval for Frozen Sections Protocol
- Appropriate Fixation of IHC/ICC Samples
- Cellular Response to Hypoxia Protocols
- Chromogenic IHC Staining of Formalin-Fixed Paraffin-Embedded (FFPE) Tissue Protocol
- Chromogenic Immunohistochemistry Staining of Frozen Tissue
- Detection & Visualization of Antibody Binding
- Fluorescent IHC Staining of Frozen Tissue Protocol
- Graphic Protocol for Heat-induced Epitope Retrieval
- Graphic Protocol for the Preparation and Fluorescent IHC Staining of Frozen Tissue Sections
- Graphic Protocol for the Preparation and Fluorescent IHC Staining of Paraffin-embedded Tissue Sections
- Graphic Protocol for the Preparation of Gelatin-coated Slides for Histological Tissue Sections
- ICC Cell Smear Protocol for Suspension Cells
- ICC Immunocytochemistry Protocol Videos
- ICC for Adherent Cells
- IHC Sample Preparation (Frozen sections vs Paraffin)
- Immunocytochemistry (ICC) Protocol
- Immunocytochemistry Troubleshooting
- Immunofluorescence of Organoids Embedded in Cultrex Basement Membrane Extract
- Immunofluorescent IHC Staining of Formalin-Fixed Paraffin-Embedded (FFPE) Tissue Protocol
- Immunohistochemistry (IHC) and Immunocytochemistry (ICC) Protocols
- Immunohistochemistry Frozen Troubleshooting
- Immunohistochemistry Paraffin Troubleshooting
- Preparing Samples for IHC/ICC Experiments
- Preventing Non-Specific Staining (Non-Specific Binding)
- Primary Antibody Selection & Optimization
- Protocol for Heat-Induced Epitope Retrieval (HIER)
- Protocol for Making a 4% Formaldehyde Solution in PBS
- Protocol for VisUCyte™ HRP Polymer Detection Reagent
- Protocol for the Fluorescent ICC Staining of Cell Smears - Graphic
- Protocol for the Fluorescent ICC Staining of Cultured Cells on Coverslips - Graphic
- Protocol for the Preparation & Fixation of Cells on Coverslips
- Protocol for the Preparation and Chromogenic IHC Staining of Frozen Tissue Sections
- Protocol for the Preparation and Chromogenic IHC Staining of Frozen Tissue Sections - Graphic
- Protocol for the Preparation and Chromogenic IHC Staining of Paraffin-embedded Tissue Sections
- Protocol for the Preparation and Chromogenic IHC Staining of Paraffin-embedded Tissue Sections - Graphic
- Protocol for the Preparation and Fluorescent ICC Staining of Cells on Coverslips
- Protocol for the Preparation and Fluorescent ICC Staining of Non-adherent Cells
- Protocol for the Preparation and Fluorescent ICC Staining of Stem Cells on Coverslips
- Protocol for the Preparation and Fluorescent IHC Staining of Frozen Tissue Sections
- Protocol for the Preparation and Fluorescent IHC Staining of Paraffin-embedded Tissue Sections
- Protocol for the Preparation of Gelatin-coated Slides for Histological Tissue Sections
- Protocol for the Preparation of a Cell Smear for Non-adherent Cell ICC - Graphic
- R&D Systems Quality Control Western Blot Protocol
- TUNEL and Active Caspase-3 Detection by IHC/ICC Protocol
- The Importance of IHC/ICC Controls
- Troubleshooting Guide: Immunohistochemistry
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars