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Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

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...
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Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Evolution of Microbial Genome01:08

Evolution of Microbial Genome

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.
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Mechanism of Antibiotic Resistance in MRSA01:25

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Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
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Updated: May 13, 2026

A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues
07:10

A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues

Published on: February 19, 2019

Functional genomics of Staphylococcus aureus.

Kyra Y L Chua1, Timothy P Stinear, Benjamin P Howden

  • 1University of Melbourne, Australia.

Briefings in Functional Genomics
|February 23, 2013
PubMed
Summary
This summary is machine-generated.

Staphylococcus aureus, a versatile pathogen, evolves rapidly. Genomic studies reveal its global spread and host adaptation, but functional genomics are needed to fully understand its biology.

Keywords:
Staphylococcus aureusantibiotic resistancegenome sequencinggenomicspathogenesis

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Last Updated: May 13, 2026

A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues
07:10

A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues

Published on: February 19, 2019

Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR (RS-PCR)
08:51

Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR (RS-PCR)

Published on: November 4, 2016

A Tandem Liquid Chromatography&#8211;Mass Spectrometry-based Approach for Metabolite Analysis of Staphylococcus aureus
08:03

A Tandem Liquid Chromatography–Mass Spectrometry-based Approach for Metabolite Analysis of Staphylococcus aureus

Published on: March 28, 2017

Area of Science:

  • Microbiology
  • Genomics
  • Pathogen Evolution

Background:

  • Staphylococcus aureus is an opportunistic pathogen causing diverse infections, from skin issues to septicemia.
  • This bacterium exhibits significant antimicrobial resistance and adaptability.
  • Genomic advancements offer insights into S. aureus evolution globally and within hosts.

Purpose of the Study:

  • To summarize recent genomic insights into Staphylococcus aureus.
  • To discuss the future of functional genomics for understanding S. aureus biology.

Main Methods:

  • Review of recent genomic studies on Staphylococcus aureus.
  • Analysis of current and future functional genomics approaches.

Main Results:

  • Genomic data has illuminated S. aureus global distribution and host interactions.
  • Significant experimental challenges persist in translating genomic data into biological understanding.

Conclusions:

  • Genomic approaches have advanced our knowledge of Staphylococcus aureus.
  • Future functional genomics research is crucial for a comprehensive understanding of this pathogen's biology.