PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20159462-4 2010 Crystal structures of BRCA1 and MDC1 bound to tetrapeptide substrates reveal differences in the environment of conserved arginines (Arg1699 in BRCA1 and Arg1933 in MDC1) that determine the relative affinity for peptides with -COO(-) versus -CO-NH(2) termini. Arginine 121-130 BRCA1 DNA repair associated Homo sapiens 22-27 20159462-4 2010 Crystal structures of BRCA1 and MDC1 bound to tetrapeptide substrates reveal differences in the environment of conserved arginines (Arg1699 in BRCA1 and Arg1933 in MDC1) that determine the relative affinity for peptides with -COO(-) versus -CO-NH(2) termini. Arginine 121-130 BRCA1 DNA repair associated Homo sapiens 143-148