Xeroderma pigmentosum (XP) is characterized high sensitivity to UV light and high incidence of skin cancer. XP fall into seven complementation groups, XPA to XPG. They are lacking a functional helicase, endonuclease, or lesion-recognizing proteins involved base excision repair. Xeroderma pigmentosum type G (XPG) is one of the rarest and phenotypically heterogeneous forms of genetic disorder. XPG gene encodes an acidic protein with an estimated MW ~133kD that confers normal UV-resistance. XPG is a member of the flap endonuclease 1 (FEN-1) structure-specific DNA repair endonuclease family responsible to UV-induced DNA repair. Human XPG makes the 3 incision during nucleotide excision repair of DNA. The enzyme cleaves model DNA bubble structures specifically near the junction of unpaired DNA with a duplex region. A 29aa region of human XPG (981-1009aa) contains the PCNA binding activity. A conserved Arg in XPG (Arg992) is crucial for its PCNA-binding activity. Replication protein A (RPA) binds specifically and directly to two excision repair proteins, Xeroderma pigmentosum damage recognition protein XPA and the endonuclease XPG. Applications: Suitable for use in Western Blot, Immunoprecipitation. Other applications not tested. Recommended Dilution: Western Blot: 1-5ug/ml. Detects > 185kD from DiFi and other cells and tissues. Immunoprecipitation: 5-10ug/mg of protein lysate. Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4C for short-term only. For long-term storage, store at -20C. Aliquots are stable for at least 12 months at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Clonality:
Monoclonal
Clone Designation:
[3H55]
Purity:
Purified by immunoaffinity chromatography.
Form:
Supplied as a liquid in PBS, pH 7.4, 0.1% BSA, 0.09% sodium azide, 40% glycerol.
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