Related ArticlesPhosphorylated amino acids: model compounds for solid-state 31P NMR spectroscopic studies of proteins.
Magn Reson Chem. 2004 Apr;42(4):369-72
Authors: Iuga A, Brunner E
Solid-state 31P NMR spectroscopy was applied to measure the isotropic chemical shifts, chemical shift anisotropies and asymmetry parameters of three phosphorylated amino acids, O-phospho-L-serine, O-phospho-L-threonine and O-phospho-L-tyrosine. The cross-polarization buildup rates and longitudinal relaxation times of 31P and 1H were-determined and compared with the values measured for a triphosphate (GppCH2p) bound to a crystalline protein (Ras). It is shown that the phosphorylated amino acids are well-suited model compounds, e.g. for the optimization of experiments on crystalline proteins. Two-dimensional exchange experiments on O-phospho-L-tyrosine indicate the existence of an exchange between the two different conformations of the molecule.
VITAL NMR: using chemical shift derived secondary structure information for a limited set of amino acids to assess homology model accuracy
VITAL NMR: using chemical shift derived secondary structure information for a limited set of amino acids to assess homology model accuracy
Abstract Homology modeling is a powerful tool for predicting protein structures, whose success depends on obtaining a reasonable alignment between a given structural template and the protein sequence being analyzed. In order to leverage greater predictive power for proteins with few structural templates, we have developed a method to rank homology models based upon their compliance to secondary structure derived from experimental solid-state NMR...
nmrlearner
Journal club
0
12-22-2011 06:50 AM
[Question from NMRWiki Q&A forum] 13C quaternary centers in amino acids
13C quaternary centers in amino acids
I've got a sample of about 5mg of an amino acid that is the final product of a a synthesis. Due to the long relaxation time that the carboxylic and the alpha C we only got a 200 varian Mercury instrument and we're unable to obtain those signals. I was wondering if an APT is better than DEPT, because we're only interested in this signals and i've heard the overall pulse sequence is shorter than the DEPT, increasing the number of scans in the same period of time.
Check if somebody has answered this question on NMRWiki QA forum
nmrlearner
News from other NMR forums
0
09-01-2011 07:20 AM
[Question from NMRWiki Q&A forum] 13C cuaternary centers in amino acids
13C cuaternary centers in amino acids
I've got a sample of about 5mg of an amino acid that is the final product of a a synthesis. Due to the long relaxation time that the carboxilic and the alpha C we only got a 200 varian Mercury instrument and we're unable to obtain those signals. I was wondering if an APT is better than DEPT, because we're only interested in this signals and i've heart the overall pulse sequence is shorter than the DEPT, increasing the number of scans in the same period of time
Check if somebody has answered this question on NMRWiki QA forum
nmrlearner
News from other NMR forums
0
08-31-2011 07:12 PM
[KPWU blog] Names of Atoms of Amino acids
Names of Atoms of Amino acids
I really hate the inconsistent nomenclature of atoms of amino acids between different programs/database. I finished all NOESY assignment on Sparky using PDB nomenclature and the Sparky XPLOR constraint plugin (shortcut xf) doesn’t take care of the differences between XPLOR and PDB. Thus I have to find a table showing me the differences of names http://stats.wordpress.com/b.gif?host=kpwu.wordpress.com&blog=76132&post=262&subd=kpwu&ref=&feed=1
Go to KPWU blog to read complete post.
nmrlearner
News from NMR blogs
0
01-28-2011 04:52 AM
[NMR paper] An AMBER/DYANA/MOLMOL phosphorylated amino acid library set and incorporation into NMR structure calculations.
An AMBER/DYANA/MOLMOL phosphorylated amino acid library set and incorporation into NMR structure calculations.
Related Articles An AMBER/DYANA/MOLMOL phosphorylated amino acid library set and incorporation into NMR structure calculations.
J Biomol NMR. 2005 Sep;33(1):15-24
Authors: Craft JW, Legge GB
Protein structure determination using Nuclear Magnetic Resonance (NMR) requires the use of molecular dynamics programs that incorporate both NMR experimental and implicit atomic data. Atomic parameters for each amino acid type are encoded in...
nmrlearner
Journal club
0
12-01-2010 06:56 PM
[NMR paper] A 2H solid-state NMR spectroscopic investigation of biomimetic bicelles containing ch
A 2H solid-state NMR spectroscopic investigation of biomimetic bicelles containing cholesterol and polyunsaturated phosphatidylcholine.
Related Articles A 2H solid-state NMR spectroscopic investigation of biomimetic bicelles containing cholesterol and polyunsaturated phosphatidylcholine.
Chem Phys Lipids. 2004 Nov;132(1):55-64
Authors: Minto RE, Adhikari PR, Lorigan GA
Deuterium solid-state NMR spectroscopy was used to qualitatively study the effects of both 1-palmitoyl-2-linoleoyl-sn-glycero-3-phosphatidylcholine (PLiPC) and cholesterol on...
nmrlearner
Journal club
0
11-24-2010 10:03 PM
[NMR paper] Solid-state NMR spectroscopic studies of an integral membrane protein inserted into a
Solid-state NMR spectroscopic studies of an integral membrane protein inserted into aligned phospholipid bilayer nanotube arrays.
Related Articles Solid-state NMR spectroscopic studies of an integral membrane protein inserted into aligned phospholipid bilayer nanotube arrays.
J Am Chem Soc. 2004 Aug 11;126(31):9504-5
Authors: Lorigan GA, Dave PC, Tiburu EK, Damodaran K, Abu-Baker S, Karp ES, Gibbons WJ, Minto RE
This communication demonstrates for the first time that solid-state NMR spectroscopic studies can be used to investigate aligned...
nmrlearner
Journal club
0
11-24-2010 10:01 PM
NMR-Spectroscopic and Solid-State Investigations of Cometal-Free Asymmetric Conjugate
NMR-Spectroscopic and Solid-State Investigations of Cometal-Free Asymmetric Conjugate Addition: A Dinuclear Paracyclophaneimine Zinc Methyl Complex
S. Ay et al
http://pubs.acs.org//appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja1032502/aop/images/medium/ja-2010-032502_0003.gifJournal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable).
Source: Journal of the American Chemical Society