Patent ID: 7550557

Claim:
A multilayer film comprising a plurality of layers of polyelectrolytes, wherein adjacent layers are oppositely charged, wherein a first layer comprises a first layer polypeptide comprising one or more first amino acid sequence motifs, wherein the one or more first amino acid sequence motifs has a length of 5 to 15 amino acids residues, and wherein the balance of charge in the first amino acid sequence motif at pH 7 is greater than or equal to approximately one-half of the length of the first amino acid sequence motif, wherein the first layer polypeptide is not a homopolymer and is not a branched polypeptide, is at least 15 amino acid residues long, and has a balance of charge at pH 7 greater than or equal to approximately one-half of the total length of the first layer polypeptide, and wherein a second layer comprises a second layer polyelectrolyte having a charge opposite that of the first layer polypeptide, wherein the second layer polyelectrolyte is not a polypeptide.