1315
The Clb5 kinase , which promotes S phase , remains active during the G2 - phase arrest of cells of the parental strain , but its activity declines rapidly in sim mutants .
 GENE: Clb5 kinase; GENE: sim mutants
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: Clb5 kinase; GENE: sim mutants