RNA World Informatics Phylogeny Database

NON-CANONICAL BASE PAIR DATABASE : Individual Record Page 432

Authors:	Amarasinghe GK, De Guzman RN, Turner RB, Summers MF
Citation:	NMR structure of stem-loop SL2 of the HIV-1 psi RNA packaging signal reveals a novel A-U-A base-triple platform. J Mol Biol 299(1):145-56 May 26, 2000  [PDB link]
Base Pair Type:	AUA amino-2-carbonyl,2-carbonyl-amino; N1-amino
Base Pair Category:	Triple Base Interactions; Non Watson-Crick triple
Sequence Context:	5' G A(5) C 3' 5' G U(14) A 3' 5' U A(15) C 3'
Structure:	SL2 of Psi-site of HIV-1
Pucker Info:	*
Melting Point:	*
Free Energy:	*
Chemical Shift:	*
Glycosidic Conf:	*
Extra Info:	C16-H42 H-bonds with U14-O2'. The backbone of the 3' strand of the stem is kinked at the U14-A15 linkage in a manner that allows the nuclease of U14 to be approximately co-planar with the nucleobases of A5 and A15.
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