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

Go Back   BioNMR > NMR community > News from NMR blogs
Advanced Search
Home Forums Wiki NMR feeds Downloads Register Today's Posts



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  
Old 09-21-2017, 02:38 AM
nmrlearner's Avatar
Senior Member
 
Join Date: Jan 2005
Posts: 23,777
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 Measuring Nano- to Microstructures from Relayed Dynamic Nuclear Polarization NMR #DNPNMR

From The DNP-NMR Blog:

Measuring Nano- to Microstructures from Relayed Dynamic Nuclear Polarization NMR #DNPNMR

p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica}
Pinon, A.C., et al., Measuring Nano- to Microstructures from Relayed Dynamic Nuclear Polarization NMR. The Journal of Physical Chemistry C, 2017. 121(29): p. 15993-16005.


http://dx.doi.org/10.1021/acs.jpcc.7b04438


We show how dynamic nuclear polarization (DNP) NMR can be used in combination with models for polarization dynamics to determine the domain sizes in complex materials. By selectively doping a source component with radicals and leaving the target undoped, we can measure experimental polarization buildup curves which can be compared with simulations based on heterogeneous distributions of polarization within the sample. The variation of the integrated DNP enhancement as a function of the polarization time is found to be characteristic of the geometry. We demonstrate the method experimentally on four different systems where we successfully determine domain sizes between 200 and 20 000 nm, specifically in powdered histidine hydrochloride monohydrate, pore lengths of mesoporous silica materials, and two domain sizes in two-component polymer film coatings. Additionally, we find that even in the apparently homogeneous frozen solutions used as polarization sources in most DNP experiments, polarization is relayed from protons near the radicals to the bulk of the solution by spin diffusion, which explains the experimentally observed buildup times in these samples.
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica} p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica}

Go to The DNP-NMR Blog for more info.
Reply With Quote


Did you find this post helpful? Yes | No

Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
Dynamic Nuclear Polarization of beta-Cyclodextrin Macromolecules #DNPNMR
From The DNP-NMR Blog: Dynamic Nuclear Polarization of beta-Cyclodextrin Macromolecules #DNPNMR p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica} Caracciolo, F., et al., Dynamic Nuclear Polarization of beta-Cyclodextrin Macromolecules. J Phys Chem B, 2017. 121(12): p. 2584-2593. https://www.ncbi.nlm.nih.gov/pubmed/28260385
nmrlearner News from NMR blogs 0 06-28-2017 07:37 PM
Dynamic Nuclear Polarization of ?-Cyclodextrin Macromolecules #DNPNMR
From The DNP-NMR Blog: Dynamic Nuclear Polarization of ?-Cyclodextrin Macromolecules #DNPNMR p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica} Caracciolo, F., et al., Dynamic Nuclear Polarization of ?-Cyclodextrin Macromolecules. The Journal of Physical Chemistry B, 2017. http://dx.doi.org/10.1021/acs.jpcb.7b00836
nmrlearner News from NMR blogs 0 04-03-2017 05:37 PM
Dynamic Nuclear Polarization and Other Magnetic Ideas at EPFL #DNPNMR
From The DNP-NMR Blog: Dynamic Nuclear Polarization and Other Magnetic Ideas at EPFL #DNPNMR p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica} Bornet, A., et al., Dynamic Nuclear Polarization and Other Magnetic Ideas at EPFL. CHIMIA International Journal for Chemistry, 2012. 66(10): p. 734-740. https://doi.org/10.2533/chimia.2012.734
nmrlearner News from NMR blogs 0 12-21-2016 11:43 PM
Microwave-gated dynamic nuclear polarization #DNPNMR
From The DNP-NMR Blog: Microwave-gated dynamic nuclear polarization #DNPNMR p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica} Bornet, A., et al., Microwave-gated dynamic nuclear polarization. Phys. Chem. Chem. Phys., 2016. 18(44): p. 30530-30535. http://dx.doi.org/10.1039/C6CP05587G
nmrlearner News from NMR blogs 0 12-15-2016 02:04 AM
Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures #DNPNMR
From The DNP-NMR Blog: Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures #DNPNMR p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica} Grüning, W.R., et al., Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures. Helvetica Chimica Acta, 2016: p. n/a-n/a. http://dx.doi.org/10.1002/hlca.201600122
nmrlearner News from NMR blogs 0 11-19-2016 08:35 PM
Dynamic nuclear polarization at 40 kHz magic angle spinning #DNPNMR
From The DNP-NMR Blog: Dynamic nuclear polarization at 40 kHz magic angle spinning #DNPNMR Chaudhari, S.R., et al., Dynamic nuclear polarization at 40 kHz magic angle spinning. Phys Chem Chem Phys, 2016. 18(15): p. 10616-22. http://www.ncbi.nlm.nih.gov/pubmed/27035630
nmrlearner News from NMR blogs 0 08-23-2016 01:02 AM
Silica materials with wall-embedded nitroxides provide efficient polarization matrices for dynamic nuclear polarization NMR #DNPNMR
From The DNP-NMR Blog: Silica materials with wall-embedded nitroxides provide efficient polarization matrices for dynamic nuclear polarization NMR #DNPNMR Besson, E., et al., Silica materials with wall-embedded nitroxides provide efficient polarization matrices for dynamic nuclear polarization NMR. Chem Commun (Camb), 2016. 52(32): p. 5531-3. http://www.ncbi.nlm.nih.gov/pubmed/27020483
nmrlearner News from NMR blogs 0 08-17-2016 11:34 PM
Essentials of Dynamic Nuclear Polarization #DNPNMR
From The DNP-NMR Blog: Essentials of Dynamic Nuclear Polarization #DNPNMR Dear Colleague, It is my pleasure to announce that a limited edition of `Essentials of Dynamic Nuclear Polarization' is now available at the UK branch of Amazon: www.amazon.co.uk
nmrlearner News from NMR blogs 0 05-25-2016 02:30 AM



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 Off
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 03:17 PM.


Map