In vitro replication study of modified bases in ras sequences.
DNA templates containing a modified base (O6-methylguanine, 8-hydroxyguanine, xanthine or hypoxanthine) which was located in nucleotide sequences corresponding to the 12th or 61st codon of a ras gene were synthesized and deoxynucleotide incorporation opposite the lesions was investigated. The templates were replicated by Taq DNA polymerase, recombinant rat DNA polymerase beta and mouse DNA polymerase alpha-primase complex. Sequence analysis of the replicated products indicated selective incorporation of nucleotide(s) opposite a modified base, depending on the kind of base and of DNA polymerase. This system is very useful to obtain results of in vitro replication of modified bases in ras sequences.
Kamiya
H
H
Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
Sakaguchi
T
T
Murata
N
N
Fujimuro
M
M
Miura
H
H
Ishikawa
H
H
Shimizu
M
M
Inoue
H
H
Nishimura
S
S
Matsukage
A
A
D000818:Animals; D001483:Base Sequence; D004261:DNA Replication; D011905:Genes, ras; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D051381:Rats