Look up the structure of the subunit of hemerythrin, an oxygen-binding protein from invertebrates. It has been found that in some of the -helical regions

Look up the structure of the subunit of hemerythrin, an oxygen-binding protein from invertebrates. It has been found that in some of the α-helical regions of hemerythrin, about every third or fourth amino acid residue is a hydrophobic one. Suggest a structural reason for this finding. based on the structure you found.