RESUMO
Using classical molecular dynamics we have studied the solution structure of (1:1:29) glutamate with sodium counter ions and water. We provide a structural description of the system, focusing on glutamateglutamate interactions and providing further insight into glutamatewater interactions. In particular we have characterised the solution structure using three different water potentials, finding little difference between the structural features they predict. We find key differences in the bonding motifs for the two different carboxyl groups, both in the glutamateglutamate and glutamatewater interactions. Finally, we have examined the hydration structure of the sodium ions in the solution, showing that 10% of the ions are fully hydrated by water, despite the high glutamate concentration.