C2' And H3'-C3' Dipolar Couplings In RNA Molecules - PubMed

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Abstract

The quality of nucleic acid solution structures can be significantly improved using residual dipolar coupling data. However, many of the one-bond couplings that could be used for this purpose are difficult to measure. Conventional 2D experiments are often unable to reveal one-bond H2'-C2' and H3'-C3' couplings in large RNA molecules due to spectral overlap. Here we show how to use 3D HCcH-COSY and Relay HCcH-COSY to measure one-bond H2'-C2' and H3'-C3' couplings which improved the precision of the structures obtained recently for a 42 nucleotide RNA.

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References

1. 1. J Biomol NMR. 2001 Oct;21(2):153-60 - PubMed
2. 1. J Magn Reson. 1998 Apr;131(2):373-8 - PubMed
3. 1. J Biomol NMR. 2002 Jan;22(1):9-20 - PubMed
4. 1. Methods Enzymol. 1995;261:350-80 - PubMed
5. 1. J Magn Reson. 1997 Feb;124(2):512-5 - PubMed

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