1387
The Pro - 258 - - > Leu ( P258L ) mutation caused constitutive receptor signaling that was equivalent to about 45 % of the maximum level observed in wild - type cells stimulated with alpha - factor .
 GENE: alpha - factor
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: alpha - factor