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