The Upjohn Co.

Pharmacia & Upjohn Company

Robert L Garlick

Stephen B Lyle

Gary C Harbour

Richard J Kirschner

David P Brunner

Joseph P Martin, Jr

James F Pinner

John E Mott

John G Hoogerheide

The present invention provides an inexpensive fermentation medium for growing microorganisms. Also provided are fermentation media and methods for producing norleucine by growing E. coli thereon, fermentation media and methods for incorporating norleucine into polypeptides expressed by microorganisms grown thereon, and fermentation media and methods for preventing the incorporation of norleucine into polypeptides expressed by microorganisms grown thereon. Also provided are bovine somatotropin analogs.

Fermentation media and methods for controlling norleucine in polypeptides

The present invention provides analogs of somatotropins wherein the asparagine residue corresponding to position 99 of a bovine somatotropin is replaced with a compound selected from the group consisting of proline, aspartic acid, glutamic acid, serine, glycine, serine-serine or serine-aspartic acid. Particularly preferred analogs are bovine somatotropin and their use to increase milk production.

Somatotropin analogs

Fermentation method for producing norleucine

An imidoester, cross-linked hemoglobin composition useful in the transport of oxygen to living cells and being essentially free of any impurities, a P50 of at least 13mm Hg and predominantly in tetraruer form. Preferably, the cross-linked hemoglobin composition has a predominant molecular weight of at least 64,000. The purified and cross-linked hemoglobin has improved cross-link stability to autoxidation and can be used as a blood substitute for mammals or as an oxygen transport fluid.

Imidoester cross-linked hemoglobin compositions

An imidoester, cross-linked hemoglobin composition useful in the transport of oxygen to living cells and being essentially free of any impurities, a P50 of at least 13 mm Hg and predominantly in tetramer form. Preferably, the cross-linked hemoglobin composition has a predominant molecular weight of at least 64,000. The purified and cross-linked hemoglobin has improved cross-link stability to autoxidation and can be used as a blood substitute for mammals or as an oxygen transport fluid.

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Augusta, MI, United States of America

Robert L Garlick