tokens: In fact , by employing a novel haptenized lysis synthetic substrate which allows the isolation of glutaminyl-tTG substrates in vivo , we identified pRB as a potential tTG substrate in U937 cells undergoing apoptosis .
folded_tokens: in fact , by employing a novel haptenized lysis synthetic substrate which allows the isolation of glutaminyl-ttg substrates in vivo , we identified prb as a potential ttg substrate in u937 cells undergoing apoptosis .
labels: O O O O O O B-other_organic_compound I-other_organic_compound I-other_organic_compound I-other_organic_compound I-other_organic_compound O O O O O B-other_organic_compound I-other_organic_compound O O O O O B-protein_molecule O O B-other_organic_compound I-other_organic_compound I-other_organic_compound O B-cell_line I-cell_line O B-other_name O