10545
The RING finger , B2 box , and coiled - coil region are required for oligomerization of KAP - 1 - RBCC and KRAB binding , as mutations in these domains concomitantly abolished these functions .
 KAP - 1, RBCC, KRAB
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 KAP - 1, RBCC, KRAB