NMR Constraints Analyser

NMR Constraints Analyser analyzes atom-by-atom nuclear magnetic resonance (NMR) experimental constraints to support the determination and refinement of high-resolution three-dimensional structures of biological macromolecules complementary to techniques such as X-ray crystallography.

Key Features:

• Automatic Graphical Analysis: Provides graphical representations of experimental NMR constraints, visualizing spatial relationships and distances between atom pairs.
• Comprehensive Constraint Assessment: Evaluates the number and quality of constraints per residue to assess levels of structural definition in NMR-derived macromolecular models.

Scientific Applications:

• Computational Biology: Supplies detailed constraint information to improve computational modeling and simulation of macromolecular conformations.
• Site-Directed Mutagenesis Experiments: Informs design of targeted mutations by identifying structurally defined regions and constraint-supported residue positions.
• Drug Design: Provides precise structural constraint data useful for rational drug design and analysis of drug–target interactions with macromolecules.

Methodology:

Processes NMR experimental outputs comprising lower and upper distance limits (constraints) for atom pairs and analyzes these constraints to identify conformations that satisfy the experimental data when sufficient constraints are available.