FANTEN

FANTEN determines and analyzes anisotropy tensors associated with pseudocontact shifts (PCSs) and residual dipolar couplings (RDCs) to support structural characterization of biomolecules influenced by paramagnetic metal ions or external orienting media.

Key Features:

• Anisotropy tensor determination: Determines anisotropy tensors responsible for pseudocontact shifts (PCSs) and residual dipolar couplings (RDCs).
• Joint analysis of multiple datasets: Performs simultaneous analysis and fitting of multiple PCS and RDC datasets.
• Rigid-body minimization: Implements rigid-body minimizations for refinement of relative domain or complex orientations.

Scientific Applications:

• Protein structure determination and refinement: Uses PCSs and RDCs as restraints to determine and refine three-dimensional protein structures in solution.
• Conformational heterogeneity monitoring: Assesses conformational heterogeneity in systems of rigid domains that reorient relative to each other.
• Protein-protein complex analysis: Provides structural insights into protein-protein interactions through tensor analysis of PCSs and RDCs.

Methodology:

Determines anisotropy tensors from experimental PCS and RDC data, performs joint fitting of multiple datasets, and applies rigid-body minimization.