LIQUID

LIQUID generates fuzzy pharmacophore models and performs virtual screening and visualization in PyMOL to identify potential ligands and alternative scaffolds for RNA targets such as the Tat-TAR interaction and to inform in vitro protein expression studies.

Key Features:

• Fuzzy Pharmacophore Screening: Enables virtual screening using fuzzy pharmacophore models by comparing ligand binding poses to probabilistic feature representations.
• PyMOL integration and visualization: Implemented as a PyMOL plugin that creates and visualizes fuzzy pharmacophore models and ligand binding poses.
• RNA target applicability: Applied to RNA targets, explicitly demonstrated for the Tat-TAR RNA interaction.
• Alternative scaffold identification: Identifies hits with alternative chemical scaffolds that may be missed by traditional rigid pharmacophore approaches.

Scientific Applications:

• Virtual screening: Screening for inhibitors of specific RNA interactions, such as the Tat-TAR interaction, by analyzing ligand binding poses with fuzzy pharmacophores.
• In vitro protein expression studies: Supporting analysis relevant to in vitro protein expression by providing insights into ligand–target interactions and potential modifications.
• Hit discovery and scaffold hopping: Discovering alternative scaffolds during hit identification workflows that complement traditional pharmacophore methods.

Methodology:

Creation and visualization of fuzzy pharmacophore models via a PyMOL plugin and virtual screening performed by comparing and analyzing ligand binding poses against those fuzzy pharmacophore models.