Related Experiment Video

Updated: Jun 22, 2026

Characterizing Multidrug Efflux Systems in Acinetobacter baumannii Using an Efflux-Deficient Bacterial Strain and a Single-Copy Gene Expression System
05:06

Characterizing Multidrug Efflux Systems in Acinetobacter baumannii Using an Efflux-Deficient Bacterial Strain and a Single-Copy Gene Expression System

Published on: January 5, 2024

Protein kinase G is required for intrinsic antibiotic resistance in mycobacteria

Kerstin A Wolff1, Hoa T Nguyen, Richard H Cartabuke

  • 1Department of Molecular Biology and Microbiology, Case Western Reserve University, School of Medicine, Wood Building, 10900 Euclid Avenue, Cleveland, OH 44106-4960, USA.

Antimicrobial Agents and Chemotherapy
|June 17, 2009
PubMed

Insights

Pathogenic mycobacteria

Area of Science:

  • Microbiology
  • Molecular Biology
  • Genetics

Background:

  • Pathogenic mycobacteria exhibit both antibiotic resistance and virulence.
  • The genetic basis for the link between antibiotic resistance and virulence in mycobacteria remains largely unknown.

Purpose of the Study:

  • To investigate the genetic linkage between antibiotic resistance and virulence in pathogenic mycobacteria.
  • To identify specific genes or pathways involved in conferring intrinsic antibiotic resistance.

Main Methods:

  • Utilized genetic analysis to study the role of PknG in mycobacterial survival and antibiotic resistance.
  • Investigated the function of the eukaryotic-type protein kinase PknG in mycobacterial species.

Main Results:

  • Demonstrated that PknG is essential for the intrinsic antibiotic resistance of mycobacterial species.
  • Showed that PknG plays a crucial role in enabling mycobacteria to withstand multiple antibiotics.

Conclusions:

  • PknG, a protein kinase, is a key genetic factor linking antibiotic resistance and virulence in pathogenic mycobacteria.
  • Targeting PknG could be a potential strategy to combat antibiotic resistance in mycobacterial infections.

More Related Videos

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes08:58

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes

Published on: March 3, 2023

Measurement of Specific Mycobacterial Mistranslation Rates with Gain-of-function Reporter Systems06:18

Measurement of Specific Mycobacterial Mistranslation Rates with Gain-of-function Reporter Systems

Published on: April 26, 2019

Related Concept Videos

Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

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...
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
Antibiotic Selection00:57

Antibiotic Selection

Overview
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...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Cytoskeletal Proteins in Bacteria01:29

Cytoskeletal Proteins in Bacteria

Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in bacteria led to the change of this opinion. Bacterial cytoskeletal filaments regulate the cell shape, cell polarity, cell division, and partitioning of plasmids during cell division. It was later discovered that bacterial cytoskeletal proteins, mainly actin and tubulin homologs, are diverse compared to their eukaryotic counterparts. On the...