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Noncanonical DNA polymerization by aminoadenine-based siphoviruses.

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Title: Noncanonical DNA polymerization by aminoadenine-based siphoviruses.
Authors: Pezo, Valerie, Jaziri, Faten, Bourguignon, Pierre-Yves, Louis, Dominique, Jacobs-Sera, Deborah, Rozenski, Jef, Pochet, Sylvie, Herdewijn, Piet, Hatfull, Graham F., Kaminski, Pierre-Alexandre, Marliere, Philippe
Source: Science (pre-March 2025). 4/30/2021, Vol. 371 Issue 6541, p520-524. 5p. 3 Diagrams.
Subjects: Bacteriophage genomes, DNA viruses, Adenine, Hydrogen bonding, Thymine, DNA polymerases, Biosynthesis
Abstract: Bacteriophage genomes harbor the broadest chemical diversity of nucleobases across all life forms. Certain DNA viruses that infect hosts as diverse as cyanobacteria, proteobacteria, and actinobacteria exhibit wholesale substitution of aminoadenine for adenine, thereby forming three hydrogen bonds with thymine and violating Watson-Crick pairing rules. Aminoadenine-encoded DNA polymerases, homologous to the Klenow fragment of bacterial DNA polymerase I that includes 3′-exonuclease but lacks 5′-exonuclease, were found to preferentially select for aminoadenine instead of adenine in deoxynucleoside triphosphate incorporation templated by thymine. Polymerase genes occur in synteny with genes for a biosynthesis enzyme that produces aminoadenine deoxynucleotides in a wide array of Siphoviridae bacteriophages. Congruent phylogenetic clustering of the polymerases and biosynthesis enzymes suggests that aminoadenine has propagated in DNA alongside adenine since archaic stages of evolution. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Noncanonical DNA polymerization by aminoadenine-based siphoviruses.
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  Data: <searchLink fieldCode="AR" term="%22Pezo%2C+Valerie%22">Pezo, Valerie</searchLink><br /><searchLink fieldCode="AR" term="%22Jaziri%2C+Faten%22">Jaziri, Faten</searchLink><br /><searchLink fieldCode="AR" term="%22Bourguignon%2C+Pierre-Yves%22">Bourguignon, Pierre-Yves</searchLink><br /><searchLink fieldCode="AR" term="%22Louis%2C+Dominique%22">Louis, Dominique</searchLink><br /><searchLink fieldCode="AR" term="%22Jacobs-Sera%2C+Deborah%22">Jacobs-Sera, Deborah</searchLink><br /><searchLink fieldCode="AR" term="%22Rozenski%2C+Jef%22">Rozenski, Jef</searchLink><br /><searchLink fieldCode="AR" term="%22Pochet%2C+Sylvie%22">Pochet, Sylvie</searchLink><br /><searchLink fieldCode="AR" term="%22Herdewijn%2C+Piet%22">Herdewijn, Piet</searchLink><br /><searchLink fieldCode="AR" term="%22Hatfull%2C+Graham+F%2E%22">Hatfull, Graham F.</searchLink><br /><searchLink fieldCode="AR" term="%22Kaminski%2C+Pierre-Alexandre%22">Kaminski, Pierre-Alexandre</searchLink><br /><searchLink fieldCode="AR" term="%22Marliere%2C+Philippe%22">Marliere, Philippe</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 4/30/2021, Vol. 371 Issue 6541, p520-524. 5p. 3 Diagrams.
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  Data: <searchLink fieldCode="DE" term="%22Bacteriophage+genomes%22">Bacteriophage genomes</searchLink><br /><searchLink fieldCode="DE" term="%22DNA+viruses%22">DNA viruses</searchLink><br /><searchLink fieldCode="DE" term="%22Adenine%22">Adenine</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+bonding%22">Hydrogen bonding</searchLink><br /><searchLink fieldCode="DE" term="%22Thymine%22">Thymine</searchLink><br /><searchLink fieldCode="DE" term="%22DNA+polymerases%22">DNA polymerases</searchLink><br /><searchLink fieldCode="DE" term="%22Biosynthesis%22">Biosynthesis</searchLink>
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  Label: Abstract
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  Data: Bacteriophage genomes harbor the broadest chemical diversity of nucleobases across all life forms. Certain DNA viruses that infect hosts as diverse as cyanobacteria, proteobacteria, and actinobacteria exhibit wholesale substitution of aminoadenine for adenine, thereby forming three hydrogen bonds with thymine and violating Watson-Crick pairing rules. Aminoadenine-encoded DNA polymerases, homologous to the Klenow fragment of bacterial DNA polymerase I that includes 3′-exonuclease but lacks 5′-exonuclease, were found to preferentially select for aminoadenine instead of adenine in deoxynucleoside triphosphate incorporation templated by thymine. Polymerase genes occur in synteny with genes for a biosynthesis enzyme that produces aminoadenine deoxynucleotides in a wide array of Siphoviridae bacteriophages. Congruent phylogenetic clustering of the polymerases and biosynthesis enzymes suggests that aminoadenine has propagated in DNA alongside adenine since archaic stages of evolution. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1126/science.abe6542
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      – SubjectFull: Adenine
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      – TitleFull: Noncanonical DNA polymerization by aminoadenine-based siphoviruses.
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              Text: 4/30/2021
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