1pqt

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(New page: 200px<br /><applet load="1pqt" size="450" color="white" frame="true" align="right" spinBox="true" caption="1pqt" /> '''REFINEMENT OF d(GCGAAGC) HAIRPIN STRUCTURE U...)
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[[Image:1pqt.gif|left|200px]]<br /><applet load="1pqt" size="350" color="white" frame="true" align="right" spinBox="true"
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'''REFINEMENT OF d(GCGAAGC) HAIRPIN STRUCTURE USING ONE- AND TWO-BOND RESIDUAL DIPOLAR COUPLINGS'''<br />
'''REFINEMENT OF d(GCGAAGC) HAIRPIN STRUCTURE USING ONE- AND TWO-BOND RESIDUAL DIPOLAR COUPLINGS'''<br />
==Overview==
==Overview==
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The structure of the 13C,15N-labeled d(GCGAAGC) hairpin, as determined by, NMR spectroscopy and refined using molecular dynamics with NOE-derived, distances, torsion angles, and residual dipolar couplings (RDCs), is, presented. Although the studied molecule is of small size, it is, demonstrated that the incorporation of diminutive RDCs can significantly, improve local structure determination of regions undefined by the, conventional restraints. Very good correlation between the experimental, and back-calculated small one- and two-bond 1H-13C, 1H-15N, 13C-13C and, 13C-15N coupling constants has been attained. The final structures clearly, show typical features of the miniloop architecture. The structure is, discussed in context of the extraordinary stability of the d(GCGAAGC), hairpin, which originates from a complex interplay between the aromatic, base stacking and hydrogen bonding interactions.
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The structure of the 13C,15N-labeled d(GCGAAGC) hairpin, as determined by NMR spectroscopy and refined using molecular dynamics with NOE-derived distances, torsion angles, and residual dipolar couplings (RDCs), is presented. Although the studied molecule is of small size, it is demonstrated that the incorporation of diminutive RDCs can significantly improve local structure determination of regions undefined by the conventional restraints. Very good correlation between the experimental and back-calculated small one- and two-bond 1H-13C, 1H-15N, 13C-13C and 13C-15N coupling constants has been attained. The final structures clearly show typical features of the miniloop architecture. The structure is discussed in context of the extraordinary stability of the d(GCGAAGC) hairpin, which originates from a complex interplay between the aromatic base stacking and hydrogen bonding interactions.
==About this Structure==
==About this Structure==
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1PQT is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1PQT OCA].
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1PQT is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PQT OCA].
==Reference==
==Reference==
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[[Category: hairpin]]
[[Category: hairpin]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Sun Nov 25 02:53:22 2007''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:31:36 2008''

Revision as of 12:31, 21 February 2008


1pqt

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REFINEMENT OF d(GCGAAGC) HAIRPIN STRUCTURE USING ONE- AND TWO-BOND RESIDUAL DIPOLAR COUPLINGS

Overview

The structure of the 13C,15N-labeled d(GCGAAGC) hairpin, as determined by NMR spectroscopy and refined using molecular dynamics with NOE-derived distances, torsion angles, and residual dipolar couplings (RDCs), is presented. Although the studied molecule is of small size, it is demonstrated that the incorporation of diminutive RDCs can significantly improve local structure determination of regions undefined by the conventional restraints. Very good correlation between the experimental and back-calculated small one- and two-bond 1H-13C, 1H-15N, 13C-13C and 13C-15N coupling constants has been attained. The final structures clearly show typical features of the miniloop architecture. The structure is discussed in context of the extraordinary stability of the d(GCGAAGC) hairpin, which originates from a complex interplay between the aromatic base stacking and hydrogen bonding interactions.

About this Structure

1PQT is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.

Reference

Refinement of d(GCGAAGC) hairpin structure using one- and two-bond residual dipolar couplings., Padrta P, Stefl R, Kralik L, Zidek L, Sklenar V, J Biomol NMR. 2002 Sep;24(1):1-14. PMID:12449414

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