12945
Mechanistically , RIF1 is recruited to DSBs via the N - terminal phospho - SQ / TQ domain of 53BP1 , and DSBs generated by ionizing radiation or during CSR are hyperresected in the absence of RIF1 .
 Chemical: N; Chemical: phospho
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: N; Chemical: phospho