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p53 or TP53 is a cell cycle related transcription factor that promotes transcription of genes that induce cell cycle arrest or apoptosis in response to DNA damage or cell stresses. This tumour suppressor gene is mutated in about half of all human cancers. Recombinant Anti p53 produced in E.Coli is a non-glycosylated, polypeptide chain containing a hexahistidine tag and having a molecular weight of 37 kDa. The rAp53 is purified by proprietary chromatographic techniques. Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. Please avoid freeze thaw cycles. Antibody Recombinant.