The paraoxonase (PON) gene family of antioxidant enzymes includes three known members located adjacent to each other on chromosome 7. Paraoxonase/arylesterase 2 (PON2) is a 354 amino acid, 39 kDa protein that is widely expressed in a variety of tissues and may act as a cellular antioxidant, protecting cells from oxidative stress. PON2 has arylesterase and aryldialkylphosphatase activity (EC 3.1.1.2 and EC 3.1.8.1) and can hydrolyze a number of organophosphate substrates and aromatic carboxylic acid esters. PON2 is membrane-bound and has several potential glycosylation sites. Sequence polymorphisms in this gene may be associated with coronary heart disease and a number of phenotypes related to diabetes. PON2 is not associated with HDL but can prevent LDL lipid peroxidation and reverse the oxidation of mildly oxidized LDL. Alternatively spliced transcript variants encoding different isoforms have been described.
Key Product Details
Species Reactivity
Validated:
Human
Cited:
Human
Applications
Validated:
Western Blot
Cited:
Western Blot, Immunocytochemistry
Label
Unconjugated
Antibody Source
Polyclonal Goat IgG
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Product Specifications
Immunogen
E. coli-derived recombinant human PON2
Ala30-Leu354
Accession # Q15165
Ala30-Leu354
Accession # Q15165
Specificity
Detects endogenous human PON2 in Western blots. In Western blots, this antibody shows no cross-reactivity with recombinant human PON1 or PON3.
Clonality
Polyclonal
Host
Goat
Isotype
IgG
Scientific Data Images for Human PON2 Antibody
Detection of Human PON2 by Western Blot.
Western blot shows lysates of HepG2 human hepatocellular carcinoma cell line and HeLa human cervical epithelial carcinoma cell line. PVDF membrane was probed with 0.5 µg/mL of Human PON2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4344) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for PON2 at approximately 42-45 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 2.Detection of PON2 by Western Blot
Characterization of ID8EV and ID8hPON2 cells. A) Expression of hPON2 protein was analyzed by western blotting in ID8EV and ID8hPON2 stable cell lines. b) ID8EV and ID8hPON2 cell fractions were subjected to western blotting for PON2 and COX IV proteins. c) Colocalization of mitochondrial marker and PON2. ID8EV and ID8hPON2 cell were fixed and stained with Mito Tracker® Red (a mitochondrial marker, red) and PON2 antibody (green). The merged image of hPON2 and mitochondria (yellow) is shown in the bottom panel. d) Colocalization of ER marker and PON2. ID8EV and ID8hPON2 cell were fixed and stained for Calnexin (green), an ER marker, and hPON2 (red). The merged image of hPON2 and Calnexin is shown in the bottom panel. e) Mitochondria were isolated from ID8EV and ID8hPON2 cells and respiratory complex II + III assay was carried out as described in Materials and methods section. The results are expressed as Cytochrome c reduced/min/mg protein. f) mitochondrial superoxide levels were measured as described in the methods and values were expressed as fold change over the ID8EV. *p < 0.05 compared to IDEV cells. g) ID8EV and ID8hPON2 cells were cultured for 48 h, serum starved for 12 h, and cell viability was measured as described in the method section. h) 5 × 103 ID8EV and ID8hPON2 cells were cultured for 48 h, serum starved for 12 h and cell proliferation was assessed using BrdU by spectrophotometry as described in the Materials and methods section Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/29531225), licensed under a CC-BY license. Not internally tested by R&D Systems.Detection of PON2 by Western Blot
Characterization of ID8EV and ID8hPON2 cells. A) Expression of hPON2 protein was analyzed by western blotting in ID8EV and ID8hPON2 stable cell lines. b) ID8EV and ID8hPON2 cell fractions were subjected to western blotting for PON2 and COX IV proteins. c) Colocalization of mitochondrial marker and PON2. ID8EV and ID8hPON2 cell were fixed and stained with Mito Tracker® Red (a mitochondrial marker, red) and PON2 antibody (green). The merged image of hPON2 and mitochondria (yellow) is shown in the bottom panel. d) Colocalization of ER marker and PON2. ID8EV and ID8hPON2 cell were fixed and stained for Calnexin (green), an ER marker, and hPON2 (red). The merged image of hPON2 and Calnexin is shown in the bottom panel. e) Mitochondria were isolated from ID8EV and ID8hPON2 cells and respiratory complex II + III assay was carried out as described in Materials and methods section. The results are expressed as Cytochrome c reduced/min/mg protein. f) mitochondrial superoxide levels were measured as described in the methods and values were expressed as fold change over the ID8EV. *p < 0.05 compared to IDEV cells. g) ID8EV and ID8hPON2 cells were cultured for 48 h, serum starved for 12 h, and cell viability was measured as described in the method section. h) 5 × 103 ID8EV and ID8hPON2 cells were cultured for 48 h, serum starved for 12 h and cell proliferation was assessed using BrdU by spectrophotometry as described in the Materials and methods section Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/29531225), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human PON2 Antibody
Application
Recommended Usage
Western Blot
0.5 µg/mL
Sample: HepG2 human hepatocellular carcinoma cell line and HeLa human cervical epithelial carcinoma cell line
Sample: HepG2 human hepatocellular carcinoma cell line and HeLa human cervical epithelial carcinoma cell line
Formulation, Preparation, and Storage
Purification
Antigen Affinity-purified
Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 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: PON2
Long Name
Paraoxonase 2
Alternate Names
A-esterase 2, Serum Aryldialkylphosphatase 2
Gene Symbol
PON2
UniProt
Additional PON2 Products
Product Documents for Human PON2 Antibody
Certificate of Analysis
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Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human PON2 Antibody
For research use only
Citations for Human PON2 Antibody
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- R&D Systems Quality Control Western Blot Protocol
- 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
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