Patent ID: 7538187
Filing Date: 2009-05-26
Classification: C07K

Abstract:
1. A coloring composition for coloring a substrate comprising: a) a pigment; b) a carrier medium; and c) a peptide having affinity for a substrate and having the general formula: wherein: (i) nA+ is a positively charged amino acid at the N-terminal end of the peptide, selected from the group consisting of lysine and arginine; (ii) cA+ is a positively charged amino acid at the C-terminal end of the peptide, selected from the group consisting of lysine and arginine; (iii) AP is an affinity peptide having an amino acid sequence that has a binding affinity for the pigment; (iv) x=0 to about 50; (v) y=0 to about 50; and Sn and Sc are optional spacers comprised of 0 to about 20 amino acids; provided that x and n may not both be 0; and wherein the peptide having affinity for the substrate does not bind covalently to either the pigment or the substrate.