Stabilizing basic fibroblast growth factor using protein engineering.


Using site directed mutagenesis, each of the four cysteines present at amino acid residues 26, 70, 88, and 93 of the mature protein of human basic fibroblast growth factor (bFGF) was individually changed to serine. The biological activity and heparin binding ability was retained when the serine was substituted for the cysteine residue at either 70 or 88 of… (More)


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