Expressions such as “” means the sum of the molar ratios of Xaa1 and Xaa2, etc. Xaa1 and Xaa2 are, independently, residues having hydrophobic sidechains Exemplary naturally occurring {HEAD ~ amino acid residues} include Ala, Gly, Ile, Leu, Met, Phe, Pro, Trp, {TAIL ~ Tyr}, and Val 
Expressions such as “ ” means the sum of the molar ratios of Xaa1 and Xaa2 , etc . Xaa1 and Xaa2 are , independently , residues having hydrophobic sidechains Exemplary naturally occurring { HEAD ~ amino acid residues } include Ala , Gly , Ile , Leu , Met , Phe , Pro , Trp , { TAIL ~ Tyr } , and Val
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH