Draft Genome Sequence of Neisseria gonorrhoeae Sequence Type 1407, a Multidrug-Resistant Clinical Isolate
A Anselmo1, A Ciammaruconi1, A Carannante2
1Army Medical and Veterinary Research Center, Rome, Italy.
Genome Announcements
|August 15, 2015
Summary
Drug-resistant gonorrhea poses a global health threat. This study details the genome sequence of a multidrug-resistant Neisseria gonorrhoeae strain, ST-1407, identified in Italy, contributing to understanding antimicrobial resistance.
Area of Science:
- Microbiology
- Genomics
- Infectious Diseases
Background:
- Neisseria gonorrhoeae is a significant cause of sexually transmitted infections.
- The emergence of antibiotic-resistant strains, particularly cefixime-resistant Neisseria gonorrhoeae (CRNG), poses a serious public health risk, potentially leading to untreatable gonorrhea.
- Sequence type 1407 (ST-1407) has been identified globally as a concerning lineage of resistant gonococci.
Purpose of the Study:
- To present the complete genome sequence of a specific multidrug-resistant Neisseria gonorrhoeae strain, G2891.
- To characterize strain G2891, which belongs to the globally relevant ST-1407 lineage.
- To contribute genomic data for understanding the evolution and spread of gonorrhea antimicrobial resistance.
Main Methods:
- Whole-genome sequencing of Neisseria gonorrhoeae strain G2891.
- Bioinformatic analysis of the obtained genome sequence.
- Identification of antimicrobial resistance genes and phylogenetic placement within Neisseria gonorrhoeae population structures.
Main Results:
- The genome sequence of Neisseria gonorrhoeae strain G2891 was successfully determined.
- Strain G2891 was confirmed as belonging to sequence type 1407 (ST-1407).
- The isolate exhibited multidrug resistance characteristics, consistent with other ST-1407 strains.
Conclusions:
- The genomic data of strain G2891 provides valuable insights into the genetic makeup of multidrug-resistant Neisseria gonorrhoeae.
- This finding supports the global surveillance of ST-1407 and other resistant gonococcal strains.
- Understanding the genomics of resistant strains is crucial for developing effective treatment and control strategies against gonorrhea.
More Related Videos
Related Concept Videos
Genomic DNA in Prokaryotes
50.7K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
50.7K
Evolution of Microbial Genome
50
Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
50
Modern Molecular Taxonomy
839
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
839
Bacterial Phylum Chlamydiae
709
The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic...
709
Fimbriae, Pili, and Axial Filaments
3.1K
Fimbriae and pili are specialized bacterial surface structures that play pivotal roles in adhesion, genetic exchange, and motility. Composed primarily of pilin protein, these hairlike appendages are crucial for bacterial survival and pathogenicity in various environments.Fimbriae: Adhesion and PathogenicityFimbriae are fine, filamentous structures measuring 2–10 nanometers in diameter and are densely distributed on the bacterial cell surface. They facilitate bacterial adhesion to abiotic...
3.1K
Bacterial Phylum Spirochaetes
1.2K
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
1.2K


