In certain preferred embodiments, {HEAD ~ the hydrophobic sidechains} have between 3 and 10 carbon atoms , and may optionally include {TAIL ~ 1 3 heteroatoms} such as O, S and N. Exemplary naturally occurring amino acid residues with this characteristic include Ile, Leu, Met, Phe, Trp, Tyr and Val 
optionally include
In certain preferred embodiments , { HEAD ~ the hydrophobic sidechains } have between 3 and 10 carbon atoms , and may optionally include { TAIL ~ 1 3 heteroatoms } such as O , S and N. Exemplary naturally occurring amino acid residues with this characteristic include Ile , Leu , Met , Phe , Trp , Tyr and Val
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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