The molecule is a polynucleotide comprised of 2'-deoxyadenosine units connected via 3'->5' phosphodiester linkages. It is sometimes attached to eukaryotic messenger RNA and stabilizes the molecule before transport from the nucleus into the cytoplasm. It contains a 2'-deoxyadenosine 5'-monophosphate residue, a dAMP 3'-end residue and a dAMP 5'-end residue.
[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-[[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methyl [(2R,3S,5R)-5-(6-aminopurin-9-yl)-2-(phosphonooxymethyl)oxolan-3-yl] hydrogen phosphate