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Skutel M, Andriianov A, Zavialova M, Kirsanova M, Shodunke O, Zorin E, Golovshchinskii A, Severinov K, Isaev A. T5-like phage BF23 evades host-mediated DNA restriction and methylation. MICROLIFE 2023; 4:uqad044. [PMID: 38025991 PMCID: PMC10644984 DOI: 10.1093/femsml/uqad044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/15/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023]
Abstract
Bacteriophage BF23 is a close relative of phage T5, a prototypical Tequintavirus that infects Escherichia coli. BF23 was isolated in the middle of the XXth century and was extensively studied as a model object. Like T5, BF23 carries long ∼9.7 kb terminal repeats, injects its genome into infected cell in a two-stage process, and carries multiple specific nicks in its double-stranded genomic DNA. The two phages rely on different host secondary receptors-FhuA (T5) and BtuB (BF23). Only short fragments of the BF23 genome, including the region encoding receptor interacting proteins, have been determined. Here, we report the full genomic sequence of BF23 and describe the protein content of its virion. T5-like phages represent a unique group that resist restriction by most nuclease-based host immunity systems. We show that BF23, like other Tequintavirus phages, resist Types I/II/III restriction-modification host immunity systems if their recognition sites are located outside the terminal repeats. We also demonstrate that the BF23 avoids host-mediated methylation. We propose that inhibition of methylation is a common feature of Tequintavirus and Epseptimavirus genera phages, that is not, however, associated with their antirestriction activity.
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Affiliation(s)
- Mikhail Skutel
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
| | - Aleksandr Andriianov
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
| | - Maria Zavialova
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
- Institute of Biomedical Chemistry (IBMC), Pogodinskaya 10/8, 119435, Moscow, Russia
| | - Maria Kirsanova
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
| | - Oluwasefunmi Shodunke
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
- Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, 141701, Dolgoprudny, Russia
| | - Evgenii Zorin
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
| | | | - Konstantin Severinov
- Waksman Institute of Microbiology, 190 Frelinghuysen Rd, NJ 08854, Piscataway, United States
| | - Artem Isaev
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30/1, 143028, Moscow, Russia
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Hammerl JA, Barac A, Jäckel C, Fuhrmann J, Gadicherla A, Hertwig S. Phage vB_YenS_P400, a Novel Virulent Siphovirus of Yersinia enterocolitica Isolated from Deer. Microorganisms 2022; 10:1674. [PMID: 36014091 PMCID: PMC9412545 DOI: 10.3390/microorganisms10081674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/10/2022] [Accepted: 08/18/2022] [Indexed: 11/20/2022] Open
Abstract
Phage vB_YenS_P400 isolated from deer, is a virulent siphovirus of Y. enterocolitica, whose circularly permutated genome (46,585 bp) is not substantially related to any other phage deposited in public nucleotide databases. vB_YenS_P400 showed a very narrow host range and exclusively lysed two Y. enterocolitica B4/O:3 strains. Moreover, lytic activity by this phage was only discernible at room temperature. Together with the finding that vB_YenS_P400 revealed a long latent period (90 to 100 min) and low burst size (five to ten), it is not suitable for applications but provides insight into the diversity of Yersinia phages.
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Affiliation(s)
| | | | | | | | | | - Stefan Hertwig
- Department of Biological Safety, German Federal Institute for Risk Assessment, Max-Dohrn Str. 8-10, D-10589 Berlin, Germany
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