PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11052096-1 2000 This paper describes the design and synthesis of a conformationally rigid dimer building block Umpc3Um as a chiral center at the phosphate group with the S/N junction where c3 refers to a propylene bridge linked between the uracil 5-position and 5"-phosphate group of pUm. Uracil 224-230 myogenic differentiation 1 Homo sapiens 268-271