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Updated: Feb 11, 2026

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
Published on: March 3, 2023
Complete Genome Sequence of Multiple-Antibiotic-Resistant Streptococcus parauberis Strain SPOF3K, Isolated from
Yoonhang Lee1, Thanh Luan Nguyen1, Ahran Kim1
1Department of Aquatic Life Medicine, Pukyong National University, Busan, Republic of Korea.
Abstract:
Here, we report the complete genome sequence of multiple-antibiotic-resistant Streptococcus parauberis strain SPOF3K, isolated from the kidney of a diseased olive flounder in South Korea in 2013. Sequencing using a PacBio platform yielded a circular chromosome of 2,128,740 bp and a plasmid of 23,538 bp, harboring 2,123 and 24 protein-coding genes, respectively.
Insights
We sequenced the genome of antibiotic-resistant Streptococcus parauberis (S. parauberis) strain SPOF3K, found in diseased olive flounder. This provides a complete genetic blueprint for this important fish pathogen.
Area of Science:
- Microbiology
- Genomics
- Aquatic Animal Health
Background:
- * *Streptococcus parauberis* is a significant pathogen affecting olive flounder.
- * Antibiotic resistance in fish pathogens poses a threat to aquaculture and food safety.
- * Understanding the genetic basis of resistance is crucial for disease management.
Purpose of the Study:
- * To determine the complete genome sequence of a multiple-antibiotic-resistant *Streptococcus parauberis* strain (SPOF3K).
- * To provide a genomic resource for studying antibiotic resistance mechanisms in this fish pathogen.
Main Methods:
- * Whole-genome sequencing was performed using the PacBio platform.
- * Bioinformatic analysis was used to assemble the genome and identify protein-coding genes.
Main Results:
- * A complete circular chromosome of 2,128,740 base pairs was obtained.
- * A plasmid of 23,538 base pairs was identified.
- * The chromosome and plasmid harbor 2,123 and 24 protein-coding genes, respectively.
- * The strain exhibits multiple-antibiotic resistance.
Conclusions:
- * The complete genome sequence of *S. parauberis* SPOF3K offers valuable insights into its genetic makeup.
- * This genomic data can aid in developing strategies to combat antibiotic resistance in aquaculture.
- * Further research can explore the identified genes for potential virulence and resistance factors.
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