liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Microsecond protein dynamics measured by C-13(alpha) rotating-frame spin relaxation
Lund University, Department of Biophysical Chemistry.
Lund University, Department of Biophysical Chemistry.
2005 (English)In: ChemBioChem (Print), ISSN 1439-4227, E-ISSN 1439-7633, Vol. 6, no 9, 1685-1692 p.Article in journal (Refereed) Published
Abstract [en]

NMR spin relaxation in the rotating frame (R-1p) is a unique method for atomic-resolution characterisation of conformational (chemical) exchange processes occuring on the microsecond timescale. We present a rotating frame C-13 relaxation dispersion experiment for measuring conformational dynamics in uniformly C-13-labeled proteins. The experiment was validated by using the E140Q mutant of the C-terminal fragment of calmodulin, which exhibits significant conformational exchange between two major conformations, as gauged from previous N-15 and H-1 relaxation studies. Consistent with previous work, the present C-13, R-1p experiment detects conformational-exchange dynamics throughout the protein. The average correlation time of <tau(ex)> = 25 +/- 8 mu s is in excellent agreement with those determined previously from H-1 and N-15 R-1p, relaxation data: <tau(ex)> = 19 +/- 7 and 21 +/- 3 mu s, respectively. The extracted chemical-shift differences between the exchanging states reveal significant fluctuations in dihedral angles within single regions of Ramachandran phi-psi space that were not identified from the H-1 and N-15 relaxation data. The present results underscore the advantage of using several types of nuclei to probe exchange dynamics in biomolecules.

Place, publisher, year, edition, pages
2005. Vol. 6, no 9, 1685-1692 p.
Keyword [en]
C-TERMINAL DOMAIN; CONFORMATIONAL EXCHANGE; TRANSVERSE RELAXATION; BACKBONE DYNAMICS; CHEMICAL-SHIFTS; NMR-SPECTROSCOPY; ORDER PARAMETERS; TIME-SCALE; CALMODULIN; RESONANCE
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-51907DOI: 10.1002/cbic.200500086OAI: oai:DiVA.org:liu-51907DiVA: diva2:278089
Available from: 2009-11-23 Created: 2009-11-23 Last updated: 2017-12-12

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Lundström, Patrik

Search in DiVA

By author/editor
Lundström, Patrik
In the same journal
ChemBioChem (Print)
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 56 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf