APEX1 antibody

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Synonyms:DNA-(apurinic or apyrimidinic site) endonuclease|APEX nuclease (APEN)|Apurinic-apyrimidinic endonuclease 1 (AP endonuclease 1 antibody, APE-1)|REF-1|Redox factor-1|DNA-(apurinic or apyrimidinic site) endonuclease antibody, mitochondrial|APEX1|APE|APE1|APEX|APX|HAP1|REF1 antibody
Catalogue No.:FNab00480Reactivity:Human, Mouse
Host:RabbitTested Application:ELISA, WB, IHC, IF
Clonality:polyclonalIsotype:IgG
Size Price
100µg Inquiry
Dispatch Time: About 3 working days
  • SPECIFICATIONS
  • FIGURES
  • CONDITIONS
  • FAQS
Product Name
APEX1 antibody
Catalogue No.
FNab00480
Size
100μg
Form
liquid
Purification
Immunogen affinity purified
Purity
≥95% as determined by SDS-PAGE
Clonality
polyclonal
Isotype
IgG
Storage
PBS with 0.02% sodium azide and 50% glycerol pH 7.3, -20℃ for 12 months(Avoid repeated freeze / thaw cycles.)
Immunogen
Immunogen
APEX nuclease(multifunctional DNA repair enzyme) 1
Alternative Names
DNA-(apurinic or apyrimidinic site) endonuclease|APEX nuclease (APEN)|Apurinic-apyrimidinic endonuclease 1 (AP endonuclease 1 antibody, APE-1)|REF-1|Redox factor-1|DNA-(apurinic or apyrimidinic site) endonuclease antibody, mitochondrial|APEX1|APE|APE1|APEX|APX|HAP1|REF1 antibody
UniProt ID
P27695
Observed MW
36 kDa
Application
Tested Applications
ELISA, WB, IHC, IF
Recommended dilution
WB: 1:500 - 1:2000; IHC: 1:50 - 1:100; IF: 1:50 - 1:100
Validated Images
HepG2 cells were subjected to SDS PAGE followed by western blot with FNab00480(APEX1 antibody) at dilution of 1:500
Immunohistochemistry of paraffin-embedded human cervical cancer using FNab00480(APEX1 antibody) at dilution of 1:50
Immunofluorescence analysis of A549 using FNab00480(APEX1 antibody) at dilution of 1:50
Background
Multifunctional protein that plays a central role in the cellular response to oxidative stress. The two major activities of APEX1 in DNA repair and redox regulation of transcriptional factors. Functions as a apurinic/apyrimidinic(AP) endodeoxyribonuclease in the DNA base excision repair(BER) pathway of DNA lesions induced by oxidative and alkylating agents. Initiates repair of AP sites in DNA by catalyzing hydrolytic incision of the phosphodiester backbone immediately adjacent to the damage, generating a single-strand break with 5'-deoxyribose phosphate and 3'-hydroxyl ends. Does also incise at AP sites in the DNA strand of DNA/RNA hybrids, single-stranded DNA regions of R-loop structures, and single-stranded RNA molecules. Has a 3'-5' exoribonuclease activity on mismatched deoxyribonucleotides at the 3' termini of nicked or gapped DNA molecules during short-patch BER. Possesses a DNA 3' phosphodiesterase activity capable of removing lesions(such as phosphoglycolate) blocking the 3' side of DNA strand breaks. May also play a role in the epigenetic regulation of gene expression by participating in DNA demethylation. Acts as a loading factor for POLB onto non-incised AP sites in DNA and stimulates the 5'-terminal deoxyribose 5'-phosphate(dRp) excision activity of POLB. Plays a role in the protection from granzymes-mediated cellular repair leading to cell death. Also involved in the DNA cleavage step of class switch recombination(CSR). On the other hand, APEX1 also exerts reversible nuclear redox activity to regulate DNA binding affinity and transcriptional activity of transcriptional factors by controlling the redox status of their DNA-binding domain, such as the FOS/JUN AP-1 complex after exposure to IR. Involved in calcium-dependent down-regulation of parathyroid hormone(PTH) expression by binding to negative calcium response elements(nCaREs). Together with HNRNPL or the dimer XRCC5/XRCC6, associates with nCaRE, acting as an activator of transcriptional repression. Stimulates the YBX1-mediated MDR1 promoter activity, when acetylated at Lys-6 and Lys-7, leading to drug resistance. Acts also as an endoribonuclease involved in the control of single-stranded RNA metabolism. Plays a role in regulating MYC mRNA turnover by preferentially cleaving in between UA and CA dinucleotides of the MYC coding region determinant(CRD). In association with NMD1, plays a role in the rRNA quality control process during cell cycle progression. Associates, together with YBX1, on the MDR1 promoter. Together with NPM1, associates with rRNA. Binds DNA and RNA.
How many times can antibodies be recycled?

First, usually it's not suggested to recycle antibodies. After use, buffer system of antibodies has changed. The storage condition of recycled antibodies for different customers also varies. Thus, the performance efficiency of recycled antibodies can’t be guaranteed. Besides, FineTest ever conducted the antibody recycling assay. Assay results show recycling times of different antibodies also varies. Usually, higher antibody titer allows more repeated use. Customers can determine based on experimental requirements.

Notes: After incubation, we recycle rest antibodies to centrifuge tube and store at 4℃. High titer antibodies can be stored for a minimum of one week. Reuse about three times.

What are components of FineTest antibody buffer?

Components of FineTest antibody buffer are usually PBS with proclin300 or sodium azide, BSA, 50% glycerol. Common preservative is proclin300 or sodium azide, which is widely applied in the lab and industry.

How about the storage temperature and duration of FineTest antibodies?

Most antibodies are stored at -20℃. Directly-labeled flow cytometry antibodies should be stored at 2 - 8℃. The shelf life is one year. If after sales issues for purchased antibodies appear, return or replacement is available. Usually, antibodies can be still used after the one-year warranty. We can offer technical support services.

Is dilution required for FineTest antibodies? What’s the dilute solution?

Directly-labeled flow cytometry antibodies are ready-to-use without dilution. Other antibodies are usually concentrated. Follow the dilution ratio suggested in the manual. Dilute solution for different experiments also varies. Common antibody dilution buffers are acceptable(e.g. PBST, TBST, antibody blocking buffer).

How to retrieve antibodies for immunohistochemistry?

Common retrieval buffers: Tris-EDTA Buffer(pH 9.0); Citrate Buffer(pH 6.0)

Heat induced antibody retrieval:

Method 1: Water-bath heating: Put the beaker with retrieval buffer and slide in the boiling water bath. Keep the boiling state for 15min. Naturally cool to room temperature;

Method 2: Microwave retrieval: Put the beaker with retrieval buffer and slide in the microwave oven. Heat at high power for 5min, Switch OFF for 3min, Heat at medium power for 5min. Naturally cool to room temperature.

How to choose secondary antibodies?

(1) Secondary antibodies react with primary antibodies. Thus, secondary antibodies should be against host species of primary antibodies. E.g. If the primary antibody is derived from rabbit, the relevant secondary antibody should be against rabbit. E.g. goat anti rabbit or donkey anti rabbit.

(2) Choose secondary antibody conjugates according to the experimental type, e.g. ELISA, WB, IHC etc. Common enzyme conjugated secondary antibodies are labelled by HRP, AP etc. Fluorescin or dye labelled secondary antibodies are applied in immunofluorescence and flow cytometry(e.g. FITC, Cy3).

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