PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7935445-2 1994 The sequence TTCC is located in the pyrimidine tract which extends 5" to and partially overlaps the X box of the DRA promoter. pyrimidine 36-46 solute carrier family 26 member 3 Homo sapiens 113-116 7935445-4 1994 In this study, we demonstrate that mutations within the pyrimidine tract which change the TTCC motif, but do not affect the binding of regulatory factor X to the X box, decrease the activity of the DRA promoter in B cells. pyrimidine 56-66 solute carrier family 26 member 3 Homo sapiens 198-201