SPECIFIC, SOLUBLE FACTOR INVOLVED IN SEXUAL AGGLUTINATION OF THE YEAST <i>HANSENULA WINGEI</i>

Abstract

Taylor, Neil W. (Northern Regional Research Laboratory, Peoria, Ill.). Specific, soluble factor involved in sexual agglutination of the yeast Hansenula wingei. J. Bacteriol. 87:863-866. 1964.-A factor was liberated by snail enzymes from unisexual mating type 5 of Hansenula wingei NRRL Y-2340. This factor is the (or a) factor on type 5 involved in sexual agglutination of H. wingei because it agglutinates only the active opposite mating type; it is absorbed appreciably only by the active opposite mating type; and it is inactivated by a mercaptan, the same agent which inactivates sexual agglutination in type 5. The sedimentation rate of the factor, 31 Svedbergs, indicates it to be soluble.