ArticleJournal of nucleic acids2012
MsDpo4-a DinB Homolog from Mycobacterium smegmatis-Is an Error-Prone DNA Polymerase That Can Promote G:T and T:G Mismatches.
Article in Journal of nucleic acids, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Article
- Visualizing mutagenic repair: novel insights into bacterial translesion synthesis.FEMS microbiology reviews · 2020Review
- The proofreading activity of Pfprex from Plasmodium falciparum can prevent mutagenesis of the apicoplast genome by oxidized nucleotides.Scientific reports · 2020Article
- Pyrophosphate hydrolysis is an intrinsic and critical step of the DNA synthesis reaction.Nucleic acids research · 2018Article
- Derivatives of Bst-like Gss-polymerase with improved processivity and inhibitor tolerance.Nucleic acids research · 2017Article
- Increased Processivity, Misincorporation, and Nucleotide Incorporation Efficiency in Sulfolobus solfataricus Dpo4 Thumb Domain Mutants.Applied and environmental microbiology · 2017Article
- DNA Replication in Mycobacterium tuberculosis.Microbiology spectrum · 2017Review
- Division of labor among Mycobacterium smegmatis RNase H enzymes: RNase H1 activity of RnhA or RnhC is essential for growth whereas RnhB and RnhA guard against killing by hydrogen peroxide in stationary phase.Nucleic acids research · 2017Article
- A DinB Ortholog Enables Mycobacterial Growth under dTTP-Limiting Conditions Induced by the Expression of a Mycobacteriophage-Derived Ribonucleotide Reductase Gene.Journal of bacteriology · 2016Article
- Biochemical Characterization of Mycobacterium smegmatis RnhC (MSMEG_4305), a Bifunctional Enzyme Composed of Autonomous N-Terminal Type I RNase H and C-Terminal Acid Phosphatase Domains.Journal of bacteriology · 2015Article
- Mycobacterium smegmatis DinB2 misincorporates deoxyribonucleotides and ribonucleotides during templated synthesis and lesion bypass.Nucleic acids research · 2014Article
- A strategically located serine residue is critical for the mutator activity of DNA polymerase IV from Escherichia coli.Nucleic acids research · 2013Article
- Characterization of Mycobacterium smegmatis PolD2 and PolD1 as RNA/DNA polymerases homologous to the POL domain of bacterial DNA ligase D.Biochemistry · 2012Article
- Article
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Authors and funding
2 authors.
Funding
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Abstract
Error-prone DNA synthesis in prokaryotes imparts plasticity to the genome to allow for evolution in unfavorable environmental conditions, and this phenomenon is termed adaptive mutagenesis. At a molecular level, adaptive mutagenesis is mediated by upregulating the expression of specialized error-prone DNA polymerases that generally belong to the Y-family, such as the polypeptide product of the dinB gene in case of E. coli. However, unlike E. coli, it has been seen that expression of the homologs of dinB in Mycobacterium tuberculosis are not upregulated under conditions of stress. These studies suggest that DinB homologs in Mycobacteria might not be able to promote mismatches and participate in adaptive mutagenesis. We show that a representative homolog from Mycobacterium smegmatis (MsDpo4) can carry out template-dependent nucleotide incorporation and therefore is a DNA polymerase. In addition, it is seen that MsDpo4 is also capable of misincorporation with a significant ability to promote G:T and T:G mismatches. The frequency of misincorporation for these two mismatches is similar to that exhibited by archaeal and prokaryotic homologs. Overall, our data show that MsDpo4 has the capacity to facilitate transition mutations and can potentially impart plasticity to the genome.
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Registered trials
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