Figure 7: Summary: Protein-Protein Interaction. Arbitrary protein molecular species in the proteome sensing each other’s level of ΔS for suitability and parity for interaction. It is hypothesized that certain specific DR(red)- and DQ(blue)- molecules in the proteome are mutually amorous, “in love”, in terms of ΔS and thus will couple, resulting in co-operativity with maximal expansion of ΔS , lowering ΔH, and promoting ΔG ≤ 0.