[NMR paper] Tripeptides on Gold Nanoparticles: Structural Differences between Two Reverse Sequences as Determined by Solid-State NMR and DFT Calculations.
Related ArticlesTripeptides on Gold Nanoparticles: Structural Differences between Two Reverse Sequences as Determined by Solid-State NMR and DFT Calculations.
J Phys Chem B. 2015 Sep 10;119(36):11998-2006
Authors: Karki I, Wang H, Geise NR, Wilson BW, Lewis JP, Gullion T
Abstract
The reverse-sequence peptides CysAlaAla and AlaAlaCys may attach to gold nanoparticles through the thiol group, and they differ primarily by whether the charged amino or the carboxylate group is proximal to the sulfur. Alanine residues in these peptides are not expected to interact significantly with the gold surface and serve to place a large separation between the amino and carboxylate groups. Solid-state NMR experiments and DFT calculations were performed to explore the structural differences between CysAlaAla on gold nanoparticles and AlaAlaCys on gold nanoparticles. It is found that the relative positions between the thiol, amino, and carboxylate groups strongly influences the structures of the peptide-gold systems. CysAlaAla orients parallel to the gold surface in a monolayer fashion, whereas AlaAlaCys forms an interdigitating bilayer-like structure that is oriented upright relative to the gold surface.
[NMR paper] Cellulose Structural Polymorphism in Plant Primary Cell Walls Investigated by High-Field 2D Solid-State NMR Spectroscopy and Density Functional Theory Calculations.
Cellulose Structural Polymorphism in Plant Primary Cell Walls Investigated by High-Field 2D Solid-State NMR Spectroscopy and Density Functional Theory Calculations.
Cellulose Structural Polymorphism in Plant Primary Cell Walls Investigated by High-Field 2D Solid-State NMR Spectroscopy and Density Functional Theory Calculations.
Biomacromolecules. 2016 May 18;
Authors: Wang T, Yang H, Kubicki JD, Hong M
Abstract
The native cellulose of bacterial, algal, and animal origins has been well studied structurally using X-ray and neutron...
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Monitoring Protein Structure on the Surface of Gold Nanoparticles using NMR Spectroscopy
Monitoring Protein Structure on the Surface of Gold Nanoparticles using NMR Spectroscopy
Publication date: 27 January 2015
Source:Biophysical Journal, Volume 108, Issue 2, Supplement 1</br>
Author(s): Ailin Wang , Karen Woods , Tam Vo , Alex Coats , Nicholas C. Fitzkee</br>
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[NMR paper] Motion-adapted pulse sequences for oriented sample (OS) solid-state NMR of biopolymers.
Motion-adapted pulse sequences for oriented sample (OS) solid-state NMR of biopolymers.
Motion-adapted pulse sequences for oriented sample (OS) solid-state NMR of biopolymers.
J Chem Phys. 2013 Aug 28;139(8):084203
Authors: Lu GJ, Opella SJ
Abstract
One of the main applications of solid-state NMR is to study the structure and dynamics of biopolymers, such as membrane proteins, under physiological conditions where the polypeptides undergo global motions as they do in biological membranes. The effects of NMR radiofrequency irradiations on...
[NMR paper] Improved pulse sequences for pure exchange solid-state NMR spectroscopy.
Improved pulse sequences for pure exchange solid-state NMR spectroscopy.
Related Articles Improved pulse sequences for pure exchange solid-state NMR spectroscopy.
Magn Reson Chem. 2004 Feb;42(2):285-90
Authors: Vosegaard T, Nielsen NC
Spin-exchange experiments are useful for improving the resolution and establishment of sequential assignments in solid-state NMR spectra of uniformly (15)N-labeled proteins oriented macroscopically in phospholipid bilayers. To exploit this advantage fully, it is crucial that the diagonal peaks in the...
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[NMR paper] Free-energy calculations highlight differences in accuracy between X-ray and NMR stru
Free-energy calculations highlight differences in accuracy between X-ray and NMR structures and add value to protein structure prediction.
Related Articles Free-energy calculations highlight differences in accuracy between X-ray and NMR structures and add value to protein structure prediction.
Structure. 2001 Oct;9(10):905-16
Authors: Lee MR, Kollman PA
BACKGROUND: While X-ray crystallography structures of proteins are considerably more reliable than those from NMR spectroscopy, it has been difficult to assess the inherent accuracy of NMR...
Tripeptides on Gold Nanoparticles: Structural Differences between Two Reverse Sequences as Determined by Solid-State NMR and DFT Calculations.
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