13455
Out of a pilot collection of nearly 2000 full - length human ORF preys , FKBP12 , the established target of FK506 , emerged as the prey protein that gave the highest increase in luciferase activity .
 Chemical: FK506
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: FK506