scholarly journals Increased spontaneous recombination in RNase H2- deficient cells arises from multiple contiguous rNMPs and not from single rNMP residues incorporated by DNA polymerase epsilon

2016 ◽  
Vol 3 (6) ◽  
pp. 248-254 ◽  
Author(s):  
Anastasiya Epshtein ◽  
Catherine Potenski ◽  
Hannah Klein
Keyword(s):  
Dna Polymerase ◽  
Dna Polymerase Epsilon ◽  
Spontaneous Recombination ◽  
Polymerase Epsilon ◽  
Rnase H2

Effects of the anticancer drug cis-diamminedichloroplatinum(II) on the activities of calf thymus DNA polymerase .epsilon.

Biochemistry ◽  
1993 ◽  
Vol 32 (3) ◽  
pp. 841-848 ◽  
Author(s):  
Lin Huang ◽  
John J. Turchi ◽  
Alan F. Wahl ◽  
Robert A. Bambara
Keyword(s):  
Dna Polymerase ◽  
Anticancer Drug ◽  
Calf Thymus Dna ◽  
Dna Polymerase Epsilon ◽  
Calf Thymus ◽  
Polymerase Epsilon

scholarly journals Analysis of APOBEC-induced mutations in yeast strains with low levels of replicative DNA polymerases

2020 ◽  
Vol 117 (17) ◽  
pp. 9440-9450 ◽  
Author(s):  
Yang Sui ◽  
Lei Qi ◽  
Ke Zhang ◽  
Natalie Saini ◽  
Leszek J. Klimczak ◽  
...  
Keyword(s):  
Dna Polymerase ◽  
Dna Polymerases ◽  
Induced Mutations ◽  
Single Stranded Dna ◽  
Dna Polymerase Epsilon ◽  
Dna Polymerase Alpha ◽  
Yeast Strains ◽  
Polymerase Epsilon ◽  
Low Levels ◽  
Lagging Strand

Yeast strains with low levels of the replicative DNA polymerases (alpha, delta, and epsilon) have high levels of chromosome deletions, duplications, and translocations. By examining the patterns of mutations induced in strains with low levels of DNA polymerase by the human protein APOBEC3B (a protein that deaminates cytosine in single-stranded DNA), we show dramatically elevated amounts of single-stranded DNA relative to a wild-type strain. During DNA replication, one strand (defined as the leading strand) is replicated processively by DNA polymerase epsilon and the other (the lagging strand) is replicated as short fragments initiated by DNA polymerase alpha and extended by DNA polymerase delta. In the low DNA polymerase alpha and delta strains, the APOBEC-induced mutations are concentrated on the lagging-strand template, whereas in the low DNA polymerase epsilon strain, mutations occur on the leading- and lagging-strand templates with similar frequencies. In addition, for most genes, the transcribed strand is mutagenized more frequently than the nontranscribed strand. Lastly, some of the APOBEC-induced clusters in strains with low levels of DNA polymerase alpha or delta are greater than 10 kb in length.

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