4547
MAPKK kinase / MEKK phosphorylates and activates its downstream protein kinase , MAPK kinase / MEK , which in turn activates MAPK .
 GENE: MAPKK kinase; GENE: MEKK; GENE: MAPK kinase; GENE: MEK; GENE: MAPK
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: MAPKK kinase; GENE: MEKK; GENE: MAPK kinase; GENE: MEK; GENE: MAPK