Crystal structure of an a-form RNA duplex containing three gu base pairs
Structure:
RNA (5'-r(p Gp Gp Gp Up Gp Gp Up Gp Cp Gp Gp G)-3'). Chain: a. Engineered: yes. RNA (5'-r(p Cp Cp Up Gp Cp Ap Cp Up Gp Cp Cp C)-3'). Chain: b. Engineered: yes
Source:
Synthetic: yes. Other_details: in vitro transcription. Other_details: in vitro transcription
J.Kondo
et al.
(2013).
Structure of an A-form RNA duplex obtained by degradation of 6S RNA in a crystallization droplet.
Acta Crystallogr Sect F Struct Biol Cryst Commun,
69,
634-639.
PubMed id: 23722840
DOI: 10.1107/S1744309113013018
In the course of a crystallographic study of a 132 nt variant of Aquifex
aeolicus 6S RNA, a crystal structure of an A-form RNA duplex containing 12 base
pairs was solved at a resolution of 2.6 Å. In fact, the RNA duplex is part of
the 6S RNA and was obtained by accidental but precise degradation of the 6S RNA
in a crystallization droplet. 6S RNA degradation was confirmed by microscopic
observation of crystals and gel electrophoresis of crystallization droplets. The
RNA oligomers obtained form regular A-form duplexes containing three GoU
wobble-type base pairs, one of which engages in intermolecular contacts through
a ribose-zipper motif at the crystal-packing interface.