Question

Amino acid is expected to be at the core of a protein structure



a. Glutamine

Answer 1

Crystal structures show that protein main chain and side chains occupy almost every available space

The interior has a packing density comparable to that of organic solid and is denser than organic liquid

packing density = van der Waals volume/Voronoi volume

van der Waals volume is the volume actually taken up by

atoms

Voronoivolume is the sum of the atomic volume, inner voids and the surface of empty spaces (as defined by the molecular surface) organic solid 0.68 –0.8

protein 0.72 – 0.77