Preparation And Storage
Recommended Assay Procedures
Western blot: Please refer to http://www.bdbiosciences.com/pharmingen/protocols/Western_Blotting.shtml
Product Notices
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- Source of all serum proteins is from USDA inspected abattoirs located in the United States.
Companion Products
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DNA lesions caused by chemical mutagens or radiation are corrected via nucleotide excision repair (NER). The NER system includes multiple proteins involved in xeroderma pigmentosum (XP) disorders, a pathology that causes hypersensitivity to sunlight and higher incidence of skin cancer. The proteins that cause these disorders are XP proteins and include XPA, XPB, XPC, XPD, XPF, and XPG. There are six repair complexes in the NER system composed of 15-18 proteins that include XPA, XPC, XPF, TFIIH, and hHR23B. In addition to these proteins, UV damage DNA-binding (UV-DDB) protein activity has also been associated with the NER system due to the fact that UV-DDB activity is absent in a subset of XPE Ddb- patients. UV-DDB consists of two subunits, DDB1 and DDB2, which can be injected into XPE cells to restore DNA repair synthesis. UV-DDB activity may be involved in the early stages of NER when it may promote recognition of the damaged DNA through DDB2. In addition, DDB1 can bind the histone acetyltransferase p300, which may be important for chromatin remodeling during the early stages of NER. Thus, UV-DDB activity may be important for recognition of specific types of DNA damage during NER.
Development References (4)
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Dualan R, Brody T, Keeney S, Nichols AF, Admon A, Linn S. Chromosomal localization and cDNA cloning of the genes (DDB1 and DDB2) for the p127 and p48 subunits of a human damage-specific DNA binding protein. Genomics. 1995; 29(1):62-69. (Biology). View Reference
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Fujiwara Y, Masutani C, Mizukoshi T, Kondo J, Hanaoka F, Iwai S. Characterization of DNA recognition by the human UV-damaged DNA-binding protein. J Biol Chem. 1999; 274(28):20027-20033. (Biology). View Reference
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Rapić-Otrin V, McLenigan MP, Bisi DC, Gonzalez M, Levine AS. Sequential binding of UV DNA damage binding factor and degradation of the p48 subunit as early events after UV irradiation. Nucleic Acids Res. 2002; 30(11):2588-2598. (Biology). View Reference
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Sun NK, Lu HP, Chao CC. Identification of rat DDB1, a putative DNA repair protein, and functional correlation with its damaged-DNA recognition activity. J Biomed Sci. 2002; 9(4):371-380. (Biology). View Reference
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