| abstract |
Provided herein are non-naturally occurring self-assembling polypeptides for transferring nucleic acids and/or proteins to a cell, pharmaceutical compositions comprising such polypeptides, and methods for treatment comprising use of such compositions. The methods for producing polypeptide compositions may include combining in a solution, unassembled recombinant GAG-like proteins, nucleic acids and/or proteins in low salt conditions; and increasing the ionic strength of the solution. |