We believe that the insights from this work may also have implications in biology. In cells, proteins and their constituent amino acids are ubiquitous in aqueous solutions. Structuring is all-important to protein function and is strongly dependent on the surrounding solvent environment. New insights into the interplay between proteins and their surroundings is key to biological understanding. In fact, some cellular organelles are unbound by membranes and apparently exist as stable liquid regions of substantially different composition than their surroundings. The amine-water mixture studied here can be a model system for studying compositional fluctuations caused by water-amino chemistry.