Repair of depurinated DNA in vitro by enzymes purified from human lymphoblasts.
AUTOR(ES)
Bose, K
RESUMO
Alkali-labile lesions introduced into T7 DNA by treatment with methyl methanesulfonate were removed and the DNA was repaired by incubation with DNA polymerase alpha and nuclease from a human lymphoblastoid line followed by the addition of DNA ligase. The nuclease preparation contains both apurinic endonuclease and 5'-3' exonuclease activities. Dinucleotides appear to be the first product of exonuclease action. Repair of methyl methanesulfonate-induced damage can occur by the insertion of only a few nucleotides per lesion as in vivo.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=411343Documentos Relacionados
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