6092
APLF , in turn , functions as a scaffold protein and promotes the recruitment and / or retention of XRCC4 - Lig4 and XLF , thereby assembling multi - protein Ku complexes capable of efficient DNA ligation in vitro and in cells .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None