prov:value
| - , and Z; a=0 to 1, b=0 to 1, and c<1; and a+b+c=1.0;(a) wherein X is selected from glutamate, asparagine, aspartate, and glutamine; (b) Y is selected from lysine and arginine; and (c) Z is an amino acid selected from cysteine, methionine, serine, threonine, glycine, alanine, valine, leucine, and isoleucine; (2) a monomer selected from the group consisting of glutamate, asparagine, aspartate, gluta
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