VLDP

VLDP computes Voronoi-Laguerre (Laguerre) tessellations of protein structures to quantify atomic and residue volumes, define inter-residue contacts, and measure solvent exposure for structural and interaction analysis.

Key Features:

• Laguerre Tessellation: Employs Voronoi-Laguerre tessellations to partition space around atoms and precisely model atomic environments within proteins.
• High-Precision Amino Acid Volumes: Calculates amino-acid and atomic volumes with high accuracy, validated by strong correlations with experimental data.
• Inter-Residue Contacts Definition: Implements a novel, tessellation-based definition of inter-residue contacts to characterize protein interactions and stability.
• Solvent Exposure Measurement: Derives residue solvent exposure measures from the tessellation that can improve upon traditional accessibility metrics.
• Comprehensive Output Options: Produces polygonal molecular-surface visualizations of the Laguerre tessellation and downloadable files containing volumes, areas, contacts, and per-residue/atom metrics.

Scientific Applications:

• Protein folding and stability: Uses quantitative volume and contact data to analyze packing, folding, and stability of proteins.
• Interaction mapping: Identifies and characterizes protein–protein and protein–ligand interfaces via tessellation-derived contacts and solvent exposure.
• Experimental comparison: Provides volume metrics and structural parameters for comparison and validation against experimental data.
• Visualization and exploratory analysis: Supplies polygonal molecular surfaces and quantitative outputs to support structural interpretation and exploratory studies.

Methodology:

The input protein system is embedded in a solvent environment and a Voronoi-Laguerre (Laguerre) tessellation is computed to derive volumes, areas, and inter-residue contacts from the resulting spatial partitioning.