Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...
Patent
1991-03-07
1993-06-15
Naff, David M.
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Blood proteins or globulins, e.g., proteoglycans, platelet...
530300, 530324, 530344, 435 711, A61K 3514, A61K 3702, C12P 2104
Patent
active
052199983
ABSTRACT:
A water-soluble yeast protein of about molecular weight 4770 daltons is isolated having murine Epidermal Growth Factor (mEFG) activity per milligram at least equivalent to 1000 nanograms of mEGF by Elisa Assay Titration. The protein is naturally present in yeast and is free of water-insoluble yeast components. The proten is insoluble in trichloroacetic acid, chloroform, absolute methanol, 95% ethanol, acetone, hexanes, petroleum ether, and 50% methanol--25% ether. The protein is soluble in acidic solutions containing 50% methanol, ethanol or acetone. The protein stimulates the growth and respiration of A431 cells in a culture without serum supplements.
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Bentley et al., Peptides from Live Yeast Cell Derivative . . ., Arch. Surg., vol. 125, May 1990.
Keller Stephen J.
Levin Robert H.
Kurlandsky Samuel
Meller Mike
Naff David M.
White John L.
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