Physicochemical Principles Governing the Intrinsically Disordered Salivary Peptide Histatin 5 : Ensemble Structure, Electrostatics, and Environmental Responsiveness
Histatin 5 (Hst5) is a histidine-rich intrinsically disordered protein (IDP) whose biological function arises from a highly heterogeneous conformational ensemble and environmental sensitivity. Unlike structured antimicrobial peptides that rely on persistent secondary motifs, Hst5 remains disordered across a wide range of conditions, enabling continuous adaptation to changes in pH, ionic strength,
