A functional prepro-alpha-factor gene in Saccharomyces yeasts can contain three, four, or five repeats of the mature pheromone sequence.

Molecular and cellular biology

Brake AJ, Julius DJ, Thorner J. A functional prepro-alpha-factor gene in Saccharomyces yeasts can contain three, four, or five repeats of the mature pheromone sequence. Mol Cell Biol. 1983 Aug; 3(8):1440-50.

1983
http://profiles.ucsf.edu/profile/304422
6353204

Brake AJ, Julius DJ, Thorner J