Patent ID: 6852834

Claim:
A fusion protein comprising: (a) one or more biological molecules selected from the group consisting of peptides and proteins; (b) one or more phase transition proteins that exhibit an inverse phase transition wherein the one or more phase transition proteins are joined to the biological molecule(s) of (a); and (c) optionally, a spacer sequence separating any of the phase transition protein(s) of (b) from any of the biological molecule(s) of (a), wherein the fusion protein retains the inverse phase transition behavior of the phase transition protein(s) of (b) and wherein said phase transition protein(s) has a molecular weight of at least 9,000 Daltons, and wherein the one or more phase transition protein(s) of (b) comprises oligomeric repeats of the pentapeptide Val-Pro-Gly-X-Gly, wherein X is any natural or non-natural amino acid residue, and wherein X optionally varies among oligomeric repeats.