Related Experiment Video

Updated: Aug 31, 2025

Direct Detection of the Acetate-forming Activity of the Enzyme Acetate Kinase
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Published on: December 19, 2011

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Structural insight into substrate binding of Acinetobacter baumannii polyphosphate-AMP phosphotransferase (PPK2), a

Lalit Kumar Gautam1, Prince Sharma2, Neena Capalash1

  • 1Department of Biotechnology, Panjab University, BMS Block-I, Sector- 25, Chandigarh, 160014, India.

Biochemical and Biophysical Research Communications
|August 20, 2022
PubMed

Insights

Acinetobacter baumannii infections are a growing threat due to antibiotic resistance. This study explores polyphosphate kinase 2 (PPK2) as a potential drug target by analyzing its substrate binding. Identifying key interactions could lead to new treatments.

Area of Science:

  • Microbiology
  • Molecular Biology
  • Drug Discovery

Background:

  • Acinetobacter baumannii is a significant opportunistic pathogen causing severe infections.
  • Rising carbapenem resistance in A. baumannii necessitates novel therapeutic targets.
  • Polyphosphate kinase 2 (PPK2) is a known pathogenicity factor but unexplored in A. baumannii.

Purpose of the Study:

  • To investigate the substrate binding of Acinetobacter baumannii polyphosphate kinase 2 (AbPPK2).
  • To explore AbPPK2 as a potential drug target for combating A. baumannii infections.

Main Methods:

  • Development and validation of a homology model for AbPPK2.
  • Molecular docking simulations of ATP and ADP within the AbPPK2 binding pocket.
  • Analysis of catalytic cleft residues involved in substrate interaction.

Main Results:

  • A homology model of AbPPK2 was successfully created and validated.
  • Molecular docking identified binding interactions for ATP and ADP.
  • Common residues interacting with both ATP and ADP in the catalytic cleft were determined.

Conclusions:

  • AbPPK2 is a promising drug target for A. baumannii.
  • The identified common residues are crucial for designing AbPPK2 inhibitors.
  • This research provides a foundation for developing novel anti-Acinetobacter therapies.
Keywords:
Drug targetHomology modelingMD simulationPPK2Polyphosphate

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