<i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections

Bacteriophages grown on <i>Caulobacter vibrioides</i> strain CB15 have reduced plating efficiency on other <i>Caulobacter</i> strains. To determine the cause of this reduced plating efficiency, we performed a series of experiments that demonstrated that the reduced plating ef...

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Main Authors: Ian Sisto, Bert Ely
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Viruses
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Online Access:https://www.mdpi.com/1999-4915/17/3/311
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author Ian Sisto
Bert Ely
author_facet Ian Sisto
Bert Ely
author_sort Ian Sisto
collection DOAJ
description Bacteriophages grown on <i>Caulobacter vibrioides</i> strain CB15 have reduced plating efficiency on other <i>Caulobacter</i> strains. To determine the cause of this reduced plating efficiency, we performed a series of experiments that demonstrated that the reduced plating efficiency is due to a novel set of restriction and modification (RM) enzymes that are present in most of the <i>Caulobacter</i> strains that we tested. We then demonstrated that one of these RM systems recognizes the nucleotide sequence 5′-ATNNAT-3′. A careful inspection of the genome nucleotide sequences of each of the strains revealed that the genes coding for these RM enzymes have not been annotated or identified, suggesting that the proteins may differ from the common types of bacterial restriction and modification enzymes. In addition, the host strain NA1000 contains a 26 kb mobile element that provides resistance to incoming phages.
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spelling doaj-art-9976134c490f4d4cb7e7597246169ece2025-08-20T02:43:10ZengMDPI AGViruses1999-49152025-02-0117331110.3390/v17030311<i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage InfectionsIan Sisto0Bert Ely1Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USADepartment of Biological Sciences, University of South Carolina, Columbia, SC 29208, USABacteriophages grown on <i>Caulobacter vibrioides</i> strain CB15 have reduced plating efficiency on other <i>Caulobacter</i> strains. To determine the cause of this reduced plating efficiency, we performed a series of experiments that demonstrated that the reduced plating efficiency is due to a novel set of restriction and modification (RM) enzymes that are present in most of the <i>Caulobacter</i> strains that we tested. We then demonstrated that one of these RM systems recognizes the nucleotide sequence 5′-ATNNAT-3′. A careful inspection of the genome nucleotide sequences of each of the strains revealed that the genes coding for these RM enzymes have not been annotated or identified, suggesting that the proteins may differ from the common types of bacterial restriction and modification enzymes. In addition, the host strain NA1000 contains a 26 kb mobile element that provides resistance to incoming phages.https://www.mdpi.com/1999-4915/17/3/311<i>Caulobacter</i>restriction enzymesphage plating efficiencybacteriophageDNA methylation
spellingShingle Ian Sisto
Bert Ely
<i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections
Viruses
<i>Caulobacter</i>
restriction enzymes
phage plating efficiency
bacteriophage
DNA methylation
title <i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections
title_full <i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections
title_fullStr <i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections
title_full_unstemmed <i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections
title_short <i>Caulobacter</i> Strains Code for Novel Restriction Endonucleases That Protect Them from Bacteriophage Infections
title_sort i caulobacter i strains code for novel restriction endonucleases that protect them from bacteriophage infections
topic <i>Caulobacter</i>
restriction enzymes
phage plating efficiency
bacteriophage
DNA methylation
url https://www.mdpi.com/1999-4915/17/3/311
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