7023
Semidominant mutations in the yeast Rad51 protein and their relationships with the Srs2 helicase .
 yeast Rad51 protein, Srs2 helicase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 yeast Rad51 protein, Srs2 helicase