X. Salvatella et al., Side chain elongation causes a change from enthalpy driven to entropy driven binding in the molecular recognition of tetraanionic peptides, CHEM COMMUN, (15), 2000, pp. 1399-1400
In binding to tetraguanidinium compounds, the average side chain length of
tetraanionic peptides determines the thermodynamics of binding, the degree
of helix induction and the rigidity of the complex formed.