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Genome Sequence of a Lytic Staphylococcus aureus Bacteriophage Isolated from Breast Milk.

ABSTRACT: We identified a double-stranded DNA (dsDNA) bacteriophage appearing to belong to Herelleviridae, genus Kayvirus. The bacteriophage, Biyabeda-mokiny 1, was isolated from breast milk using a clinical isolate of Staphylococcus aureus. The genome is 141,091 bp in length and encodes 230 putative coding sequences.

SUBMITTER: Iszatt JJ

PROVIDER: S-EPMC9753681 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature

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Genome Sequence of a Lytic Staphylococcus aureus Bacteriophage Isolated from Breast Milk.

Iszatt Joshua J JJ Larcombe Alexander N AN Garratt Luke W LW Trend Stephanie S Stick Stephen M SM Agudelo-Romero Patricia P Kicic Anthony A

Microbiology resource announcements 20221123 12

We identified a double-stranded DNA (dsDNA) bacteriophage appearing to belong to <i>Herelleviridae</i>, genus <i>Kayvirus</i>. The bacteriophage, Biyabeda-mokiny 1, was isolated from breast milk using a clinical isolate of Staphylococcus aureus. The genome is 141,091 bp in length and encodes 230 putative coding sequences. ...[more]

PMID: 36416544

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Project description:BackgroundMethicillin-Resistant Staphylococcus aureus (MRSA) is one of the most resistant bacteria to antibiotics. S. aureus is an important, widespread pathogen that can cause a variety of infectious diseases in humans and animals. Phages have been recognized as natural, safe, highly specific and effective alternatives agents to antibiotics for preventing and treating bacterial infections caused by MRSA. Therefore, this study aims at the characterization of a novel isolated lytic phage, vB_SauP_ASUmrsa123.MethodsIsolates of Staphylococcus aureus MRSA were obtained on Mannitol Salt Agar and Baird Parker Agar plates and confirmed using VITEK 2. Sewage and clinical samples were used to isolate specific phages for S. aureus MRSA, and plaque assays were used for host range determination on Luria-Bertani (LB) media. The phage morphology of the isolated phage was determined by transmission electron microscopy. The phage's whole genome sequencing was identified.ResultsA total of 25 isolates of Staphylococci were obtained from different clinical sources and showed typical colonies on Baird-Parker and Mannitol Salt Agar plates. The VITEK 2 automated system revealed that all 25 isolates were confirmed as S. aureus (MRSA). Two of the most antibiotics-resistant isolates were further confirmed using 16S ribosomal RNA sequencing. A lytic phage was detected against the MRSA isolates tested In Vitro, namely vB_SauP_ASUmrsa123. The phage belonged to Rountreeviridae family based on morphological properties observed by TEM and the host range of the isolated phage was tested on the 25 clinical MRSA isolates in Vitro. The one-step growth curve of the isolated phage showed that the latent period was about 55 min, and the burst size was estimated at 167 PFU. The whole genome sequencing and annotation of genes revealed that phage vB_SauP_ASUmrsa123 contained a linear dsDNA with a size of about 17,155 bp with predicted 24 ORFs. Analysis of its genome provides valuable information approximately the variety of phages belonging to the staphylococcal phages class I.ConclusionA lytic Podo Phage vB_SauP_ASUmrsa123 was identified against S. aureus MRSA isolates and its genome was sequenced. The phage was found to be eligible for potential application in biocontrol.

Dataset Information

Genome Sequence of a Lytic Staphylococcus aureus Bacteriophage Isolated from Breast Milk.

Publications

Genome Sequence of a Lytic Staphylococcus aureus Bacteriophage Isolated from Breast Milk.

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