BioNMR
NMR aggregator & online community since 2003
BioNMR    
Learn or help to learn NMR - get free NMR books!
 

Go Back   BioNMR > Educational resources > Journal club
Advanced Search



Jobs Groups Conferences Literature Pulse sequences Software forums Programs Sample preps Web resources BioNMR issues


Webservers
NMR processing:
MDD
NMR assignment:
Backbone:
Autoassign
MARS
UNIO Match
PINE
Side-chains:
UNIO ATNOS-Ascan
NOEs:
UNIO ATNOS-Candid
UNIO Candid
ASDP
Structure from NMR restraints:
Ab initio:
GeNMR
Cyana
XPLOR-NIH
ASDP
UNIO ATNOS-Candid
UNIO Candid
Fragment-based:
BMRB CS-Rosetta
Rosetta-NMR (Robetta)
Template-based:
GeNMR
I-TASSER
Refinement:
Amber
Structure from chemical shifts:
Fragment-based:
WeNMR CS-Rosetta
BMRB CS-Rosetta
Homology-based:
CS23D
Simshift
Torsion angles from chemical shifts:
Preditor
TALOS
Promega- Proline
Secondary structure from chemical shifts:
CSI (via RCI server)
TALOS
MICS caps, β-turns
d2D
PECAN
Flexibility from chemical shifts:
RCI
Interactions from chemical shifts:
HADDOCK
Chemical shifts re-referencing:
Shiftcor
UNIO Shiftinspector
LACS
CheckShift
RefDB
NMR model quality:
NOEs, other restraints:
PROSESS
PSVS
RPF scores
iCing
Chemical shifts:
PROSESS
CheShift2
Vasco
iCing
RDCs:
DC
Anisofit
Pseudocontact shifts:
Anisofit
Protein geomtery:
Resolution-by-Proxy
PROSESS
What-If
iCing
PSVS
MolProbity
SAVES2 or SAVES4
Vadar
Prosa
ProQ
MetaMQAPII
PSQS
Eval123D
STAN
Ramachandran Plot
Rampage
ERRAT
Verify_3D
Harmony
Quality Control Check
NMR spectrum prediction:
FANDAS
MestReS
V-NMR
Flexibility from structure:
Backbone S2
Methyl S2
B-factor
Molecular dynamics:
Gromacs
Amber
Antechamber
Chemical shifts prediction:
From structure:
Shiftx2
Sparta+
Camshift
CH3shift- Methyl
ArShift- Aromatic
ShiftS
Proshift
PPM
CheShift-2- Cα
From sequence:
Shifty
Camcoil
Poulsen_rc_CS
Disordered proteins:
MAXOCC
Format conversion & validation:
CCPN
From NMR-STAR 3.1
Validate NMR-STAR 3.1
NMR sample preparation:
Protein disorder:
DisMeta
Protein solubility:
camLILA
ccSOL
Camfold
camGroEL
Zyggregator
Isotope labeling:
UPLABEL
Solid-state NMR:
sedNMR


Reply
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Unread 01-11-2014, 07:50 PM
nmrlearner's Avatar
Senior Member
 
Join Date: Jan 2005
Posts: 23,137
Points: 193,617, Level: 100
Points: 193,617, Level: 100 Points: 193,617, Level: 100 Points: 193,617, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 50.7%
Activity: 50.7% Activity: 50.7% Activity: 50.7%
Last Achievements
Award-Showcase
NMR Credits: 0
NMR Points: 193,617
Downloads: 0
Uploads: 0
Default Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids.

Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids.

Related Articles Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids.

J Magn Reson. 2013 Jun;231:5-14

Authors: Potapov A, Yau WM, Tycko R

Abstract
We explore the possibility of using dynamic nuclear polarization (DNP) to enhance signals in structural studies of biological solids by solid state NMR without sample spinning. Specifically, we use 2D (13)C-(13)C exchange spectroscopy to probe the peptide backbone torsion angles (?, ?) in a series of selectively (13)C-labeled 40-residue ?-amyloid (A?(1-40)) samples, in both fibrillar and non-fibrillar states. Experiments are carried out at 9.39 T and 8 K, using a static double-resonance NMR probe and low-power microwave irradiation at 264 GHz. In frozen solutions of A?(1-40) fibrils doped with DOTOPA-TEMPO, we observe DNP signal enhancement factors of 16-21. We show that the orientation- and frequency-dependent spin polarization exchange between sequential backbone carbonyl (13)C labels can be simulated accurately using a simple expression for the exchange rate, after experimentally determined homogeneous (13)C lineshapes are incorporated in the simulations. The experimental 2D (13)C-(13)C exchange spectra place constraints on the ? and ? angles between the two carbonyl labels. Although the data are not sufficient to determine ? and ? uniquely, the data do provide non-trivial constraints that could be included in structure calculations. With DNP at low temperatures, 2D (13)C-(13)C exchange spectra can be obtained from a 3.5 mg sample of A?(1-40) fibrils in 4 h or less, despite the broad (13)C chemical shift anisotropy line shapes that are observed in static samples.


PMID: 23562665 [PubMed - indexed for MEDLINE]



More...
Reply With Quote


Did you find this post helpful? Yes | No

Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
Dynamic nuclear polarization-enhanced 1H–13C double resonance NMR in static samples below 20 K
From The DNP-NMR Blog: Dynamic nuclear polarization-enhanced 1H–13C double resonance NMR in static samples below 20 K I think I missed this one from 2012 Potapov, A., et al., Dynamic nuclear polarization-enhanced 1H–13C double resonance NMR in static samples below 20 K. J. Magn. Reson., 2012. 221(0): p. 32-40.
nmrlearner News from NMR blogs 0 11-21-2013 01:14 AM
Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids
From The DNP-NMR Blog: Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids Potapov, A., W.M. Yau, and R. Tycko, Dynamic nuclear polarization-enhanced (13)C NMR spectroscopy of static biological solids. J Magn Reson, 2013. 231(0): p. 5-14. http://www.ncbi.nlm.nih.gov/pubmed/23562665
nmrlearner News from NMR blogs 0 06-25-2013 12:17 AM
Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy
From The DNP-NMR Blog: Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy Rossini, A.J., et al., Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy. Acc. Chem. Res., 2013. http://www.ncbi.nlm.nih.gov/pubmed/23517009
nmrlearner News from NMR blogs 0 06-01-2013 12:38 AM
Dynamic Nuclear Polarization Enhanced Natural Abundance 17O Spectroscopy
From the The DNP-NMR Blog: Dynamic Nuclear Polarization Enhanced Natural Abundance 17O Spectroscopy Blanc, F., et al., Dynamic Nuclear Polarization Enhanced Natural Abundance 17O Spectroscopy. J. Am. Chem. Soc., 2013. 135(8): p. 2975-2978. http://dx.doi.org/10.1021/ja4004377
nmrlearner News from NMR blogs 0 04-15-2013 08:52 AM
Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids
Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids Available online 27 February 2013 Publication year: 2013 Source:Journal of Magnetic Resonance</br> </br> We explore the possibility of using dynamic nuclear polarization (DNP) to enhance signals in structural studies of biological solids by solid state NMR without sample spinning. Specifically, we use 2D 13C-13C exchange spectroscopy to probe the peptide backbone torsion angles (?,?) in a series of selectively 13C-labeled 40-residue ?-amyloid (A ?1-40) samples, in both fibrillar and...
nmrlearner Journal club 0 02-28-2013 07:57 PM
[NMR paper] Sensitivity-enhanced static 15N NMR of solids by 1h indirect detection.
Sensitivity-enhanced static 15N NMR of solids by 1h indirect detection. Related Articles Sensitivity-enhanced static 15N NMR of solids by 1h indirect detection. J Magn Reson. 2001 May;150(1):43-8 Authors: Hong M, Yamaguchi S A method for enhancing the sensitivity of 15N spectra of nonspinning solids through 1H indirect detection is introduced. By sampling the 1H signals in the windows of a pulsed spin-lock sequence, high-sensitivity 1H spectra can be obtained in two-dimensional (2D) spectra whose indirect dimension yields the 15N chemical...
nmrlearner Journal club 0 11-19-2010 08:32 PM
Surface Enhanced NMR Spectroscopy by Dynamic Nuclear Polarization
Surface Enhanced NMR Spectroscopy by Dynamic Nuclear Polarization Anne Lesage, Moreno Lelli, David Gajan, Marc A. Caporini, Veronika Vitzthum, Pascal Mie?ville, Johan Alauzun, Arthur Roussey, Chloe? Thieuleux, Ahmad Medhi, Geoffrey Bodenhausen, Christophe Cope?ret and Lyndon Emsley http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja104771z/aop/images/medium/ja-2010-04771z_0004.gif Journal of the American Chemical Society DOI: 10.1021/ja104771z http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA...
nmrlearner Journal club 0 09-11-2010 01:25 AM
Dynamic nuclear polarization-enhanced solid-state NMR spectroscopy of GNNQQNY nanocry
Dynamic nuclear polarization-enhanced solid-state NMR spectroscopy of GNNQQNY nanocrystals and amyloid fibrils. http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.rsc.org-images-entities-char_z_RSClogo.gif Related Articles Dynamic nuclear polarization-enhanced solid-state NMR spectroscopy of GNNQQNY nanocrystals and amyloid fibrils. Phys Chem Chem Phys. 2010 Jun 14;12(22):5911-9 Authors: Debelouchina GT, Bayro MJ, van der Wel PC, Caporini MA, Barnes AB, Rosay M, Maas WE, Griffin RG Dynamic nuclear polarization (DNP) utilizes the...
nmrlearner Journal club 0 08-26-2010 04:41 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



BioNMR advertisements to pay for website hosting and domain registration. Nobody does it for us.



Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright, BioNMR.com, 2003-2013
Search Engine Friendly URLs by vBSEO 3.6.0

All times are GMT. The time now is 10:14 AM.


Map