| 摘要 |
<p>Alpha 1-antitrypsin is prepared by growing methylotropic yeast transformants containing in their genome at least one copy of DNA encoding alpha 1-antitrypsin, in operational linkage with DNA encoding a signal sequence, which is effective for directing secretion of proteins from the host cells, DNA constructs and recombinant yeast strains used for the expression and secretion of alpha 1-antritrypsin are also provided. The fermentation medium requires a pH of 6.5 to 7.5.</p> |
