Figure 4
From: A comprehensive computational study of amino acid interactions in membrane proteins
Polar-polar and polar-charge interactions. (a) Energy profile (in kcal/mol) as a function of the interresidue distance d (in Å) for globular proteins (dashed black), extramembrane regions (blue) and transmembrane regions (red). (b) Cluster of polar residue interactions at the interface between transmembrane helices in 4ZW9 (GLUT3 glucose transporter).
