Related Experiment Video
Updated: May 29, 2025

Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
Published on: August 20, 2021
Genome sequences of Klebsiella pneumoniae bacteriophages SF_KL2 and SF_KL25
Sophia Lorenz1,2, Gabriel Abreu1,2, Hugo Oliveira1,2
1CEB-Centre of Biological Engineering, University of Minho, Braga, Portugal.
Abstract:
This report describes the genomes of Klebsiella pneumoniae phages SF_KL2 and SF_KL25, which infect the encapsulated multidrug-resistant K. pneumoniae known to cause nosocomial infections. SF_KL2 and SF_KL25 belong to the genus Webervirus (siphovirus morphotype) and have genomes of 48,737 and 49,170 bp, respectively. The phages were isolated from wastewater in northern Portugal.
Insights
This study details the genomes of two Klebsiella pneumoniae phages, SF_KL2 and SF_KL25. These phages infect multidrug-resistant Klebsiella pneumoniae, offering potential in combating hospital-acquired infections.
Area of Science:
- Microbiology
- Genomics
- Virology
Background:
- Klebsiella pneumoniae is a significant cause of nosocomial infections.
- Multidrug-resistant strains of K. pneumoniae pose a growing public health threat.
- Bacteriophages are viruses that infect bacteria and are being explored as therapeutic agents.
Purpose of the Study:
- To characterize the genomes of two Klebsiella pneumoniae phages, SF_KL2 and SF_KL25.
- To provide genomic data for phages infecting multidrug-resistant K. pneumoniae.
- To contribute to the understanding of Webervirus genus phages.
Main Methods:
- Isolation of bacteriophages from wastewater samples.
- Genome sequencing and analysis of isolated phages.
- Phylogenetic analysis to determine phage classification.
Main Results:
- The genomes of phages SF_KL2 and SF_KL25 were sequenced, measuring 48,737 bp and 49,170 bp, respectively.
- Both phages were classified within the Webervirus genus, exhibiting a siphovirus morphotype.
- The phages were isolated from wastewater in northern Portugal.
Conclusions:
- The genomic characterization of SF_KL2 and SF_KL25 provides valuable data for phage therapy development against K. pneumoniae.
- Understanding these phages contributes to the knowledge of the Webervirus genus and phage-bacterial interactions.
- The isolation source highlights the potential of environmental sources for discovering novel therapeutic phages.
Related Concept Videos
Lysogenic Cycle of Bacteriophages
Lytic Cycle of Bacteriophages

