Nucleic Acids Research, Vol 24, Issue 13 2592-2596, Copyright © 1996 by Oxford University Press
M Grune, JP Furste, S Klussmann, VA Erdmann and LR Brown
NMR spectroscopy of the E-domain fragment of Escherichia coli 5S rRNA
indicates that this molecule exists in solution as either a stem-loop or as
a duplex with two U-U base pairs in the bulge region. At temperatures below
27 degrees C, interconversion between the monomeric and dimeric forms in
solution occurs on a time scale of weeks and allows the preparation of
samples on which NMR structure determinations can be carried out on
predominantly monomeric or dimeric species. The NMR results obtained
provide comparison data for the distinction between A- and B-form E.coli 5S
rRNA and for the possible kinetics of conversion between these forms. NMR
evidence is presented that the duplex form also exists in crystals and
suggestions are made for means to obtain stem-loop conformations of
E-domain and other small RNA stem- loop sequences in crystals.
ARTICLES
Detection of multiple conformations of the E-domain of 5S rRNA from Escherichia coli in solution and in crystals by NMR spectroscopy
Institut fur Molekulare Biotechnologie e.V., Jena, Germany.
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