Aris nodded. "We need a molecule small enough to crawl inside that pocket and stubborn enough to stay."
Vina did not see molecules the way a chemist does. It saw and degrees of freedom . It imagined each ligand (the drug candidate) as a rigid body with rotatable bonds, then dropped it into the 3D grid of the protein like a key thrown into a dark room. 3d vina
Vina had found a cluster of poses in a cleft no one had noticed—a cryptic pocket that only appeared when a specific water molecule was displaced. The predicted ΔG was -9.3. Aris nodded
And in the silent 3D lattice of virtual atoms, the search began again. Not intelligent. Not conscious. But deep enough to find order in chaos. It imagined each ligand (the drug candidate) as