10363
Among the remaining 22 sites , six are in the promoters of known alpha - specific genes and two other sites have an alpha2 - Mcm1 - dependent role in determining the direction of mating type switching .
 alpha2, Mcm1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 alpha2, Mcm1