PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2290424-1 1990 A conformational transition of a single deoxyribose was analyzed in B-form trimers dA3:dT3 and dG3:dC3, both in the purine and pyrimidine chains. Deoxyribose 40-51 A3 Drosophila melanogaster 83-86