Hydrophobic protein surface

Hydrophobic protein surfaces are areas on a protein's exterior characterized by the presence of nonpolar (hydrophobic) amino acids exposed to the solvent[1][2][5][6]. These regions are key determinants of how proteins fold, associate with each other, and interact with small molecules and other biomolecules[1][2][8]. In general, proteins tend to minimize the exposure of hydrophobic residues to water during folding, burying them in the core, but some proteins (especially those involved in membrane binding, protein-protein interactions, or specialized functions) present hydrophobic patches on their surface[2][3]. Surface hydrophobicity strongly influences aggregation propensity and protein solubility[6]. High levels of exposed hydrophobic surface are evolutionarily selected against in highly expressed proteins due to their tendency to aggregate[6]. Hydrophobic surface regions also play roles in transient complex formation, domain swapping, and molecular recognition in biological systems[2][8]. They are not specific molecular targets for therapeutic development but are a structural and chemical property relevant to drug design and protein engineering[1][5].

Other names

Hydrophobic surfaceHydrophobic patchProtein hydrophobic patchHydrophobic residue cluster