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Related Concept Videos

Protein-protein Interfaces02:04

Protein-protein Interfaces

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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A Calcium Bioluminescence Assay for Functional Analysis of Mosquito Aedes aegypti and Tick Rhipicephalus microplus G Protein-coupled Receptors
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Investigating the olfactory function of microplusin-like proteins in Rhipicephalus microplus through molecular

Afito Luciano1, Yuxin Huo1, Sha Tan1

  • 1School of Basic Medical Sciences, Central South University, Changsha 410013, China.

Veterinary Parasitology
|December 17, 2025
PubMed
Summary
This summary is machine-generated.

This study reveals that the microplusin-like protein (MLP) in ticks can detect volatile organic compounds, with uric acid showing greater stability. This finding could lead to novel tick control strategies.

Keywords:
ChemosensoryMicroplusin-like proteinsMolecular dockingMolecular dynamics simulationsRhipicephalus microplusVolatile organic compounds

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Area of Science:

  • * Entomology
  • * Molecular Biology
  • * Biochemistry

Background:

  • * Ticks transmit numerous pathogens, posing significant risks to public health and animal health.
  • * Chemosensory perception is crucial for tick host-seeking behavior and disease transmission.
  • * Understanding tick olfactory mechanisms can inform new control strategies.

Purpose of the Study:

  • * To investigate the function of the Rhipicephalus microplus microplusin-like protein (MLP) in sensing volatile organic compounds (VOCs).
  • * To identify specific VOCs that interact with MLP.
  • * To evaluate the stability and conformational dynamics of MLP-VOC complexes.

Main Methods:

  • * Protein structure prediction using AlphaFold2, Swiss Model, and AlphaFold3.
  • * Molecular docking simulations with AutoDock Vina and Discovery Studio Visualizer.
  • * Molecular dynamics simulations using GROMACS.
  • * Analysis of protein-VOC interactions, including binding energies and stability.

Main Results:

  • * Four VOCs showed significant binding to MLP: squalene, uric acid, beta-ionone, and 2,4-Di-tert-butylphenol.
  • * Uric acid exhibited greater binding stability with MLP compared to squalene in molecular dynamics simulations.
  • * The uric acid-MLP complex demonstrated lower RMSD, consistent hydrogen bonding, and stable conformational convergence.
  • * The squalene-MLP complex showed higher conformational variability and lacked stable hydrogen bonds.

Conclusions:

  • * Microplusin-like protein (MLP) plays a role in recognizing volatile organic compounds in ticks.
  • * Uric acid is a potential ligand for MLP, showing high stability in complex formation.
  • * These findings offer insights for developing innovative, targeted tick control methods.