Technical Data
APEX1 (DNA-(Apurinic or Apyrimidinic Site) Lyase, APEX Nuclease, APEN, Apurinic-apyrimidinic Endonuclease 1, AP Endonuclease 1, APE-1, REF-1, Redox Factor-1, APE, APE1, APEX, APX, HAP1, REF1)
Reactive oxygen species (H2O2, OH, O2, HOCL) generated during normal cellular activities or by ionizing radiation and by many oxidizing/alkylating agents can induce a wide variety of lesions in DNA ranging from oxidized bases (8-oxoguanine and thymine glycol), base loss and DNA strand breaks with modified ends such as 3'-phosphate and 3'-phopshoglycolate. Unrepaired damaged/modified DNA has been implicated in aging and cancer. Many proteins that are involved in BER (base excision repair) have been identified in E. coli and mammals. Repair of modified is initiated by their removal by specific DNA glycosylase resulting in AP (apurinic/apyrimidinic) sites. A series of steps starting with the cleavage of the DNA strand adjacent to AP sites, removal of the deoxyribose phosphate residue, followed by gap filling synthesis and ligation. The DNA strand cleavage is catalyzed by a variety of AP-endonucleases (APE or HAP1, APEX, APE-1) that cleave 5' to the AP sites. APE also has an associated 3'-endonuclease activity the removes 3'trans-a,b-unsaturated aldehyde generated by AP lyase, as well as 3'-phosphate and 3'-phosphoglycolate. ROS generated 3'-blocked termini at the site of strand breaks are also removed APE.

Suitable for use in Western Blot. Other applications not tested.

Recommended Dilution:
Western Blot: 0.5-2ug/ml
Optimal dilutions to be determined by the researcher.

Positive Control:
A431 lysate

Storage and Stability:
May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
PabIgGAffinity Purified
100ug-20CBlue IceHumanGoat
Synthetic peptide corresponding to PKRGKKGAVAEDGD-C, from the N-terminus of the protein sequence according to NP_001632.2; NP_542379.1; NP_542380.1.
Purified by immunoaffinity chromatography.
Supplied as a liquid in Tris saline, 0.02% sodium azide, pH7.3, 0.5% BSA.
Recognizes human APEX1.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1. Demple B, Herman T, Chen DS. Cloning and expression of APE, the cDNA encoding the major human apurinic endonuclease: definition of a family of DNA repair enzymes. Proc Natl Acad Sci USA. 1991 Dec 15;88(24):11450-4. PMID: 1722334.