Morphological and genetic analysis of three bacteriophages of Serratia marcescens isolated from environmental water. 2009

Kenshi Matsushita, and Jumpei Uchiyama, and Shin-ichiro Kato, and Takako Ujihara, and Hiroshi Hoshiba, and Shigeyoshi Sugihara, and Asako Muraoka, and Hiroshi Wakiguchi, and Shigenobu Matsuzaki
Department of Pediatrics, Kochi Medical School, Nankoku, Kochi, Japan. matuzaki@kochi-u.ac.jp

Increases in multidrug-resistant strains of Serratia marcescens are of great concern in pediatrics, especially in neonatal intensive care units. In the search for bacteriophages to control infectious diseases caused by multidrug-resistant S. marcescens, three phages (KSP20, KSP90, and KSP100) were isolated from environmental water and were characterized morphologically and genetically. KSP20 and KSP90 belonged to morphotype A1 of the family Myoviridae, and KSP100 belonged to morphotype C3 of the family Podoviridae. Analysis of the DNA region coding virion proteins, together with their morphological features, indicated that KSP20, KSP90, and KSP100 were related to the P2-like phage (temperate), T4-type phage (virulent), and phiEco32 phage (virulent), respectively. Based on amino acid sequences of the major capsid protein, KSP90 formed a new branch with a Stenotrophomonas maltophilia phage, Smp14, in the T4-type phage phylogeny. Both Smp14 and phiEco32 have been reported as potential therapeutic phages. These results suggest that KSP90 and KSP100 may be candidate therapeutic phages to control S. marcescens infection.

UI MeSH Term Description Entries
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010802 Phylogeny The relationships of groups of organisms as reflected by their genetic makeup. Community Phylogenetics,Molecular Phylogenetics,Phylogenetic Analyses,Phylogenetic Analysis,Phylogenetic Clustering,Phylogenetic Comparative Analysis,Phylogenetic Comparative Methods,Phylogenetic Distance,Phylogenetic Generalized Least Squares,Phylogenetic Groups,Phylogenetic Incongruence,Phylogenetic Inference,Phylogenetic Networks,Phylogenetic Reconstruction,Phylogenetic Relatedness,Phylogenetic Relationships,Phylogenetic Signal,Phylogenetic Structure,Phylogenetic Tree,Phylogenetic Trees,Phylogenomics,Analyse, Phylogenetic,Analysis, Phylogenetic,Analysis, Phylogenetic Comparative,Clustering, Phylogenetic,Community Phylogenetic,Comparative Analysis, Phylogenetic,Comparative Method, Phylogenetic,Distance, Phylogenetic,Group, Phylogenetic,Incongruence, Phylogenetic,Inference, Phylogenetic,Method, Phylogenetic Comparative,Molecular Phylogenetic,Network, Phylogenetic,Phylogenetic Analyse,Phylogenetic Clusterings,Phylogenetic Comparative Analyses,Phylogenetic Comparative Method,Phylogenetic Distances,Phylogenetic Group,Phylogenetic Incongruences,Phylogenetic Inferences,Phylogenetic Network,Phylogenetic Reconstructions,Phylogenetic Relatednesses,Phylogenetic Relationship,Phylogenetic Signals,Phylogenetic Structures,Phylogenetic, Community,Phylogenetic, Molecular,Phylogenies,Phylogenomic,Reconstruction, Phylogenetic,Relatedness, Phylogenetic,Relationship, Phylogenetic,Signal, Phylogenetic,Structure, Phylogenetic,Tree, Phylogenetic
D005618 Fresh Water Water containing no significant amounts of salts, such as water from RIVERS and LAKES. Freshwater,Fresh Waters,Freshwaters,Water, Fresh,Waters, Fresh
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D001435 Bacteriophages Viruses whose hosts are bacterial cells. Phages,Bacteriophage,Phage
D012706 Serratia marcescens A species of gram-negative, facultatively anaerobic, rod-shaped bacteria found in soil, water, food, and clinical specimens. It is a prominent opportunistic pathogen for hospitalized patients.
D014764 Viral Proteins Proteins found in any species of virus. Gene Products, Viral,Viral Gene Products,Viral Gene Proteins,Viral Protein,Protein, Viral,Proteins, Viral
D016679 Genome, Viral The complete genetic complement contained in a DNA or RNA molecule in a virus. Viral Genome,Genomes, Viral,Viral Genomes

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