11552
( 1997 ) Nature 387 , 370 - 376 ) ] , we suggest that the metal fluoride ions replaced phosphate at the two ATP - binding sites of the iron protein , Kp2 .
 GENE: Kp2
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: Kp2 
Answer:
 GENE: Kp2