Assertion: nucleotide's base | /r/HasAspect | diisopropylamino
Facets:
value: on their phosphate group
type: LOCATION
Source sentences:
text: The free phosphoamidite bases have on their phosphate group a diisopropylamino (iPr 2 N) group and a 2-cyanoethyl (OCH2CH2CN) group.