PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
25597996-11	2015	Further mutation of XRCC4 Asn326 to other amino acids, i.e., alanine, aspartic acid or glutamine did not affect the nuclear localization but still exhibited radiosensitivity.	Aspartic Acid	70-83	X-ray repair cross complementing 4	Homo sapiens	20-25	
28500754-5	2017	Here we concomitantly modify the tails of XRCC4 and XLF by substituting fourteen previously identified phosphorylation sites with either alanine or aspartate residues.	Aspartic Acid	148-157	X-ray repair cross complementing 4	Homo sapiens	42-47	
21824916-6	2011	Cells expressing PNKP with alanine or aspartic acid at serines 114 and 126 were modestly radiosensitive and IR enhanced the association of PNKP with XRCC4 and DNA ligase IV; however, this interaction was not affected by mutation of PNKP phosphorylation sites.	Aspartic Acid	38-51	X-ray repair cross complementing 4	Homo sapiens	149-154