Publications by authors named "Jonathan Helmus"

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Species-dependent structural polymorphism of Y145Stop prion protein amyloid revealed by solid-state NMR spectroscopy.
Theint Theint, Philippe S Nadaud, Darryl Aucoin, Jonathan J Helmus, Simon P Pondaven

Nat Commun· September 2017

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Finite-Time Lyapunov Exponents and Lagrangian Coherent Structures in Uncertain Unsteady Flows.
Hanqi Guo, Wenbin He, Tom Peterka, Han-Wei Shen, Scott Collis, Jonathan Helmus

IEEE Trans Vis Comput Graph· June 2016

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On polarimetric radar signatures of deep convection for model evaluation: columns of specific differential phase observed during MC3E.
Marcus van Lier-Walqui, Ann M Fridlind, Andrew S Ackerman, Scott Collis, Jonathan Helmus

Mon Weather Rev· February 2016

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Nmrglue: an open source Python package for the analysis of multidimensional NMR data.
Jonathan J Helmus, Christopher P Jaroniec

J Biomol NMR· April 2013

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Protein fold determined by paramagnetic magic-angle spinning solid-state NMR spectroscopy.
Ishita Sengupta, Philippe S Nadaud, Jonathan J Helmus, Charles D Schwieters, Christopher P Jaroniec

Nat Chem· March 2012

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Structural polymorphism in amyloids: new insights from studies with Y145Stop prion protein fibrils.
Eric M Jones, Bo Wu, Krystyna Surewicz, Philippe S Nadaud, Jonathan J Helmus

J Biol Chem· December 2011

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Evaluation of the influence of intermolecular electron-nucleus couplings and intrinsic metal binding sites on the measurement of 15N longitudinal paramagnetic relaxation enhancements in proteins by solid-state NMR.
Philippe S Nadaud, Ishita Sengupta, Jonathan J Helmus, Christopher P Jaroniec

J Biomol NMR· November 2011

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Intermolecular alignment in Y145Stop human prion protein amyloid fibrils probed by solid-state NMR spectroscopy.
Jonathan J Helmus, Krystyna Surewicz, Marcin I Apostol, Witold K Surewicz, Christopher P Jaroniec

J Am Chem Soc· September 2011

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Amphiphilic self-assembly of an n-type nanotube.
Hui Shao, James Seifert, Natalie C Romano, Min Gao, Jonathan J Helmus

Angew Chem Int Ed Engl· October 2010

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Rapid acquisition of multidimensional solid-state NMR spectra of proteins facilitated by covalently bound paramagnetic tags.
Philippe S Nadaud, Jonathan J Helmus, Ishita Sengupta, Christopher P Jaroniec

J Am Chem Soc· July 2010

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Conformational flexibility of Y145Stop human prion protein amyloid fibrils probed by solid-state nuclear magnetic resonance spectroscopy.
Jonathan J Helmus, Krystyna Surewicz, Witold K Surewicz, Christopher P Jaroniec

J Am Chem Soc· February 2010

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Paramagnetic ions enable tuning of nuclear relaxation rates and provide long-range structural restraints in solid-state NMR of proteins.
Philippe S Nadaud, Jonathan J Helmus, Stefanie L Kall, Christopher P Jaroniec

J Am Chem Soc· June 2009

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Molecular conformation and dynamics of the Y145Stop variant of human prion protein in amyloid fibrils.
Jonathan J Helmus, Krystyna Surewicz, Philippe S Nadaud, Witold K Surewicz, Christopher P Jaroniec

Proc Natl Acad Sci U S A· April 2008

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Determination of methyl 13C-15N dipolar couplings in peptides and proteins by three-dimensional and four-dimensional magic-angle spinning solid-state NMR spectroscopy.
Jonathan J Helmus, Philippe S Nadaud, Nicole Höfer, Christopher P Jaroniec

J Chem Phys· February 2008

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13C and 15N chemical shift assignments and secondary structure of the B3 immunoglobulin-binding domain of streptococcal protein G by magic-angle spinning solid-state NMR spectroscopy.
Philippe S Nadaud, Jonathan J Helmus, Christopher P Jaroniec

Biomol NMR Assign· July 2007

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Long-range structural restraints in spin-labeled proteins probed by solid-state nuclear magnetic resonance spectroscopy.
Philippe S Nadaud, Jonathan J Helmus, Nicole Höfer, Christopher P Jaroniec

J Am Chem Soc· June 2007

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