Related ArticlesAn NMR-based biosensor to measure stereo-specific methionine sulfoxide reductase (MSR) activities in vitro and in vivo.
Chemistry. 2020 Jun 05;:
Authors: Sanchez-Lopez C, Labadie N, Lombardo V, Biglione F, Manta B, Jacob R, Gladyshev V, Abdelilah-Seyfried S, Selenko P, Binolfi A
Abstract
Oxidation of protein methionines to methionine-sulfoxides (MetOx) is associated with several age-related diseases. In healthy cells, MetOx is reduced to methionine by two families of conserved methionine sulfoxide reductase enzymes, MSRA and MSRB that specifically target the S - or R -diastereoisomers of methionine-sulfoxides, respectively. To directly interrogate MSRA and MSRB functions in cellular settings, we developed an NMR-based biosensor that we call CarMetOx to simultaneously measure both enzyme activities in single reaction setups. We demonstrate the suitability of our strategy to delineate MSR functions in complex biological environments, including cell lysates and live zebrafish embryos. Thereby, we establish differences in substrate specificities between prokaryotic and eukaryotic MSRs and introduce CarMetOx as a highly sensitive tool for studying therapeutic targets of oxidative stress-related human diseases and redox regulated signaling pathways.
PMID: 32501570 [PubMed - as supplied by publisher]
[NMR paper] Proximity-triggered covalent stabilization of low-affinity protein complexes in vitro and in vivo
Proximity-triggered covalent stabilization of low-affinity protein complexes in vitro and in vivo
The characterization of low-affinity protein complexes is challenging due to their dynamic nature. Here we present a method to stabilize transient protein complexes in vivo by generating a covalent and conformationally flexible bridge between the interaction partners. A highly active pyrrolysyl tRNA synthetase mutant directs the incorporation of unnatural amino acids bearing bromoalkyl moieties (BrCnK) into proteins. We demonstrate for the first time that low-affinity protein complexes...
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09-28-2017 07:57 PM
Fumarase activity: an in vivo and in vitro biomarker for acute kidney injury
From The DNP-NMR Blog:
Fumarase activity: an in vivo and in vitro biomarker for acute kidney injury
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Nielsen, P.M., et al., Fumarase activity: an in vivo and in vitro biomarker for acute kidney injury. Scientific Reports, 2017. 7: p. 40812.
http://dx.doi.org/10.1038/srep40812
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05-09-2017 12:37 AM
[NMR paper] Orthogonal spin labeling using click chemistry for in vitro and in vivo applications
Orthogonal spin labeling using click chemistry for in vitro and in vivo applications
Publication date: Available online 2 December 2016
Source:Journal of Magnetic Resonance</br>
Author(s): Svetlana Kucher, Sergei Korneev, Swati Tyagi, Ronja Apfelbaum, Dina Grohmann, Edward A. Lemke, Johann P. Klare, Heinz-Jürgen Steinhoff, Daniel Klose</br>
Site-directed spin labeling for EPR- and NMR spectroscopy has mainly been achieved exploiting the specific reactivity of cysteines. For proteins with native cysteines or for in vivo applications, an alternative...
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12-03-2016 02:09 PM
[NMR paper] A Multiplexed NMR-Reporter Approach to Measure Cellular Kinase and Phosphatase Activities in Real-Time.
A Multiplexed NMR-Reporter Approach to Measure Cellular Kinase and Phosphatase Activities in Real-Time.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-pubmed-acspubs.jpg Related Articles A Multiplexed NMR-Reporter Approach to Measure Cellular Kinase and Phosphatase Activities in Real-Time.
J Am Chem Soc. 2015 May 27;137(20):6468-71
Authors: Thongwichian R, Kosten J, Benary U, Rose HM, Stuiver M, Theillet FX, Dose A, Koch B, Yokoyama H, Schwarzer D, Wolf J, Selenko P
Abstract
Cell...
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03-02-2016 07:20 PM
A Multiplexed NMR-Reporter Approach to Measure Cellular Kinase and Phosphatase Activities in Real-Time
A Multiplexed NMR-Reporter Approach to Measure Cellular Kinase and Phosphatase Activities in Real-Time
Rossukon Thongwichian, Jonas Kosten, Uwe Benary, Honor May Rose, Marchel Stuiver, Francois-Xavier Theillet, Alexander Dose, Birgit Koch, Hideki Yokoyama, Dirk Schwarzer, Jana Wolf and Philipp Selenko
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/jacs.5b02987/20150515/images/medium/ja-2015-029876_0005.gif
Journal of the American Chemical Society
DOI: 10.1021/jacs.5b02987
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA ...
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05-16-2015 01:45 PM
Automated sequence- and stereo-specific assignment of methyl-labeled proteins by paramagnetic relaxation and methylâ??methyl nuclear overhauser enhancement spectroscopy
Automated sequence- and stereo-specific assignment of methyl-labeled proteins by paramagnetic relaxation and methylâ??methyl nuclear overhauser enhancement spectroscopy
Abstract Methyl-transverse relaxation optimized spectroscopy is rapidly becoming the preferred NMR technique for probing structure and dynamics of very large proteins up to ~1 MDa in molecular size. Data interpretation, however, necessitates assignment of methyl groups which still presents a very challenging and time-consuming process. Here we demonstrate that, in combination with a known 3D structure, paramagnetic...
[NMR paper] Validation of a noninvasive method to measure brain temperature in vivo using 1H NMR
Validation of a noninvasive method to measure brain temperature in vivo using 1H NMR spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_120x27.gif Related Articles Validation of a noninvasive method to measure brain temperature in vivo using 1H NMR spectroscopy.
J Neurochem. 1995 Mar;64(3):1224-30
Authors: Corbett RJ, Laptook AR, Tollefsbol G, Kim B
The goal of this study was to evaluate the potential of using the difference between the 1H NMR...