Prepro-alpha-factor

{{technical|date=February 2017}}

Prepro-alpha-factor is a precursor to alpha-factor secreted by MAT alpha Saccharomyces cerevisiae, which is a small peptide mating pheromone.{{cite journal|title=Prepro-alpha-factor has a cleavable signal sequence. | pmid=3283123 | volume=263 | journal=J Biol Chem | pages=6209–14

| last1 = Waters | first1 = MG | last2 = Evans | first2 = EA | last3 = Blobel | first3 = G| year=1988 | issue=13 | doi=10.1016/S0021-9258(18)68773-3 |url=http://www.jbc.org/content/263/13/6209.abstract| doi-access=free }} Prepro-alpha-factor is translocated into the endoplasmic reticulum and glycosylated at three sites as part of the chemical reaction leading to the formation of the alpha-factor.