PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9092616-1 1997 In contrast to shorter homologs which only form a single-stranded nucleic acid alpha-helix in acid solution at [Na+]</=0.02 M Na+, d(A-G)20,30 form in addition a parallel-stranded duplex with (A+.A+) and (G.G) base pairs and interstrand dA+...PO2-ionic and dA+NH2... O=P H-bonds. PO-2 246-249 dystroglycan 1 Homo sapiens 134-139