Isotopically labeled amino acids are widely used to study the structure and dynamics of proteins by NMR. Herein we describe a facile, gram-scale synthesis of compounds 1b and 2b under standard laboratory conditions from the common intermediate 7. 2b is obtained via simple deprotection, while 1b is accessed through a reductive deoxygenation/deuteration sequence and deprotection. 1b and 2b provide improved signal intensity using lower amounts of labeled precursor and are alternatives to existing...
[NMR paper] Chemo-enzymatic synthesis of site-specific isotopically labeled nucleotides for use in NMR resonance assignment, dynamics and structural characterizations.
Chemo-enzymatic synthesis of site-specific isotopically labeled nucleotides for use in NMR resonance assignment, dynamics and structural characterizations.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-oup_oa.gif http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/https:--www.ncbi.nlm.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Chemo-enzymatic synthesis of site-specific isotopically labeled nucleotides for use in NMR resonance assignment, dynamics and structural...
Expression, purification and preliminary NMR characterization of isotopically labeled wild-type human heterotrimeric G protein ?i1
Expression, purification and preliminary NMR characterization of isotopically labeled wild-type human heterotrimeric G protein ?i1
August 2012
Publication year: 2012
Source:Protein Expression and Purification, Volume 84, Issue 2</br>
</br>
Molecular-level investigation of proteins is increasingly important to researchers trying to understand the mechanisms of signal transmission. Heterotrimeric G proteins control the activation of many critical signal transmission cascades and are also implicated in numerous diseases. As part of a longer-term investigation of...
nmrlearner
Journal club
0
02-03-2013 10:13 AM
Application of SAIL phenylalanine and tyrosine with alternative isotope-labeling patterns for protein structure determination
Application of SAIL phenylalanine and tyrosine with alternative isotope-labeling patterns for protein structure determination
Abstract The extensive collection of NOE constraint data involving the aromatic ring signals is essential for accurate protein structure determination, although it is often hampered in practice by the pervasive signal overlapping and tight spin couplings for aromatic rings. We have prepared various types of stereo-array isotope labeled phenylalanines (ε- and ζ-SAIL Phe) and tyrosine (ε-SAIL Tyr) to overcome these problems (Torizawa et al. 2005), and proven...
nmrlearner
Journal club
0
01-09-2011 12:46 PM
[NMR paper] NMR assignment methods for the aromatic ring resonances of phenylalanine and tyrosine residues in proteins.
NMR assignment methods for the aromatic ring resonances of phenylalanine and tyrosine residues in proteins.
Related Articles NMR assignment methods for the aromatic ring resonances of phenylalanine and tyrosine residues in proteins.
J Am Chem Soc. 2005 Sep 14;127(36):12620-6
Authors: Torizawa T, Ono AM, Terauchi T, Kainosho M
The unambiguous assignment of the aromatic ring resonances in proteins has been severely hampered by the inherently poor sensitivities of the currently available methodologies developed for uniformly 13C/15N-labeled...
nmrlearner
Journal club
0
12-01-2010 06:56 PM
[NMR paper] NMR studies of 4-19F-phenylalanine-labeled intestinal fatty acid binding protein: evi
NMR studies of 4-19F-phenylalanine-labeled intestinal fatty acid binding protein: evidence for conformational heterogeneity in the native state.
Related Articles NMR studies of 4-19F-phenylalanine-labeled intestinal fatty acid binding protein: evidence for conformational heterogeneity in the native state.
Biochemistry. 2005 Feb 22;44(7):2369-77
Authors: Li H, Frieden C
(19)F-Nuclear magnetic resonance (NMR) studies have been carried out after incorporation of 4-(19)F-phenylalanine into the intestinal fatty acid binding protein (IFABP), a...
nmrlearner
Journal club
0
11-24-2010 11:14 PM
[NMR paper] Semisynthesis of a segmental isotopically labeled protein splicing precursor: NMR evi
Semisynthesis of a segmental isotopically labeled protein splicing precursor: NMR evidence for an unusual peptide bond at the N-extein-intein junction.
Related Articles Semisynthesis of a segmental isotopically labeled protein splicing precursor: NMR evidence for an unusual peptide bond at the N-extein-intein junction.
Proc Natl Acad Sci U S A. 2004 Apr 27;101(17):6397-402
Authors: Romanelli A, Shekhtman A, Cowburn D, Muir TW
Protein splicing is a posttranslational autocatalytic process in which an intervening sequence, termed an intein, is...
nmrlearner
Journal club
0
11-24-2010 09:51 PM
[NMR paper] Overexpression and purification of isotopically labeled Escherichia coli MutH for NMR
Overexpression and purification of isotopically labeled Escherichia coli MutH for NMR studies.
Related Articles Overexpression and purification of isotopically labeled Escherichia coli MutH for NMR studies.
Protein Expr Purif. 2003 Jun;29(2):252-8
Authors: Dutta A, Rao BJ, Chary KV
MutH is one of the enzymes involved in the methyl directed -GATC-based DNA repair system. We report a significantly optimized protocol to prepare isotopically (15N and/or 13C) labeled MutH in minimal medium with high yields for NMR studies. Under the various...
Synthesis of Isotopically Labeled, Spin-Isolated Tyrosine and Phenylalanine for Protein NMR Applications
Linear Mode
