Inventors:
Philip J. Barr - Orinda CA
Robert A. Hallewell - San Francisco CA
Steven Rosenberg - Oakland CA
Assignee:
Chiron Corporation - Emeryville CA
International Classification:
C07K 1300
Abstract:
Proteinaceous composition are provided which inhibit naturally occurring serine proteases. Particularly, an amino acid sequence analogous to human. alpha. sub. 1 -antitrypsin is modified at the active site while maintaining protease inhibition. The methionine at the active site is substituted with an oxidatively stable amino acid, while other amino acids may also be changed, added or deleted, particularly at the termini. The yeast strains AB103. 1 (pCl/PH05ATi(Val) and AB110 (pCl/1GAPATi(Val) were deposited at the A. T. C. C. on June 18, 1984 and given Accession Nos. 20711 and 20712, respectively.