Asahi obtains United States patent.

Asahi Glass Company Ltd (Tokyo, Japan) has patented a secretion signal gene having a base sequence encoding a polypeptide functional as a secretion signal in fission yeast Schizosaccharomyces pombe (hereinafter referred to as S. pombe), an expression vector having the gene and a foreign protein structural gene, a multicloning vector for construction of the expression vector which has the secretion signal gene, and efficient secretory production of the foreign protein structural gene product by S. pombe and the like. (US 5919654)