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Volumn 314, Issue 5801, 2006, Pages 1001-1004

Direct measurement of the full, sequence-dependent folding landscape of a nucleic acid

Author keywords

[No Author keywords available]

Indexed keywords

FREE ENERGY; MACROMOLECULES; MOLECULAR BIOLOGY; MOLECULAR DYNAMICS;

EID: 33750970551     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1133601     Document Type: Article
Times cited : (340)

References (28)
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    • (2005) Protein Folding Handbook
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    • B. Onoa et al., Science 299, 1892 (2003).
    • (2003) Science , vol.299 , pp. 1892
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    • Materials and methods are available as supporting material on Science Online
    • Materials and methods are available as supporting material on Science Online.
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    • Bell, G.I.1
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    • note
    • 1/2, the folded and unfolded states were nearly isoenergetic for every hairpin, and Hammond behavior was neither expected nor observed.
  • 20
    • 33751020497 scopus 로고    scopus 로고
    • note
    • Experimentally determined probability densities have been used to measure the energy landscape for a micron-scale bead hopping between adjacent optical traps (25), to probe the elasticity of kinesin molecules (26), and to support the existence of otherwise hidden intermediate states based on thermal fluctuations (27), but not to measure the energy landscape for a molecular transition.
  • 21
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    • P. A. Jansson, Ed., Academic Press, New York, ed. 2
    • P. A. Jansson, Ed., Deconvolution of Images and Spectra (Academic Press, New York, ed. 2, 1997).
    • (1997) Deconvolution of Images and Spectra
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    • note
    • A likely explanation for the weak confining potential observed experimentally is that the hairpin can rotate, effectively producing extensions lower than the folded state as the handles move past one another, driven by thermal fluctuations.
  • 23
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    • note
    • In practice, we found a resolution limit of ∼2 nm, which includes the effects of instrumental drift.
  • 24
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    • note
    • We measured the probabilities and free energy in an undamped configuration (data in Fig. 3, A to C) because passive force-clamping reduces the system stiffness (14).
  • 28
    • 33750996646 scopus 로고    scopus 로고
    • note
    • We thank members of the Block lab and the Ribozyme Folding Project for helpful discussions and manuscript comments. Supported by NIH P01-GM066275.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.