Publication date: Available online 24 February 2017 Source:Journal of Inorganic Biochemistry
Author(s): Leah M. Seebald, Christopher M. DeMott, Srivathsan Ranganathan, Papa Nii Asare Okai, Anastasia Glazunova, Alan Chen, Alexander Shekhtman, Maksim Royzen
Paramagnetic resonance enhancement (PRE) is an NMR technique that allows studying three-dimensional structures of RNA-protein complexes in solution. RNA strands are typically spin labeled using nitroxide reagents, which provide minimal perturbation to the native structure. The current work describes an alternative approach, which is based on a Co2+-based probe that can be covalently attached to RNA in the vicinity of the protein's binding site using ‘click’ chemistry. Similar to nitroxide spin labels, the transition metal based probe is capable of attenuating NMR signal intensities from protein residues localized <40Ĺ away. The extent of attenuation is related to the probe's distance, thus allowing constructing the protein's contact surface map. This new paradigm has been applied to study binding of HIV-1 nucleocapsid protein, NCp7, to a model RNA pentanucleotide. Graphical abstract
An NMR strategy for fragment-based ligand screening utilizing a paramagnetic lanthanide probe.
An NMR strategy for fragment-based ligand screening utilizing a paramagnetic lanthanide probe.
An NMR strategy for fragment-based ligand screening utilizing a paramagnetic lanthanide probe.
J Biomol NMR. 2011 Sep 17;
Authors: Saio T, Ogura K, Shimizu K, Yokochi M, Burke TR, Inagaki F
Abstract
A nuclear magnetic resonance-based ligand screening strategy utilizing a paramagnetic lanthanide probe is presented. By fixing a paramagnetic lanthanide ion to a target protein, a pseudo-contact shift (PCS) and a paramagnetic relaxation...
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An NMR strategy for fragment-based ligand screening utilizing a paramagnetic lanthanide probe
An NMR strategy for fragment-based ligand screening utilizing a paramagnetic lanthanide probe
Abstract A nuclear magnetic resonance-based ligand screening strategy utilizing a paramagnetic lanthanide probe is presented. By fixing a paramagnetic lanthanide ion to a target protein, a pseudo-contact shift (PCS) and a paramagnetic relaxation enhancement (PRE) can be observed for both the target protein and its bound ligand. Based on PRE and PCS information, the bound ligand is then screened from the compound library and the structure of the ligandâ??protein complex is determined. PRE is an...
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[NMR paper] Oxygen as a paramagnetic probe of membrane protein structure by cysteine mutagenesis
Oxygen as a paramagnetic probe of membrane protein structure by cysteine mutagenesis and (19)F NMR spectroscopy.
Related Articles Oxygen as a paramagnetic probe of membrane protein structure by cysteine mutagenesis and (19)F NMR spectroscopy.
J Am Chem Soc. 2002 Feb 27;124(8):1778-81
Authors: Luchette PA, Prosser RS, Sanders CR
Oxygen solubility increases toward the hydrophobic interior of membranes. Using NMR, this O(2) solubility gradient gives rise to an exquisite range of position-dependent paramagnetic effects at partial pressures of 100...
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[NMR paper] Probing the surface of a sweet protein: NMR study of MNEI with a paramagnetic probe.
Probing the surface of a sweet protein: NMR study of MNEI with a paramagnetic probe.
Related Articles Probing the surface of a sweet protein: NMR study of MNEI with a paramagnetic probe.
Protein Sci. 2001 Aug;10(8):1498-507
Authors: Niccolai N, Spadaccini R, Scarselli M, Bernini A, Crescenzi O, Spiga O, Ciutti A, Di Maro D, Bracci L, Dalvit C, Temussi PA
The design of safe sweeteners is very important for people who are affected by diabetes, hyperlipemia, and caries and other diseases that are linked to the consumption of sugars. Sweet...
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[NMR paper] Paramagnetic NMR Spectroscopy of Cobalt(II) and Copper(II) Derivatives of Pseudomonas
Paramagnetic NMR Spectroscopy of Cobalt(II) and Copper(II) Derivatives of Pseudomonas aeruginosa His46Asp Azurin.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-acspubs.jpg Related Articles Paramagnetic NMR Spectroscopy of Cobalt(II) and Copper(II) Derivatives of Pseudomonas aeruginosa His46Asp Azurin.
Inorg Chem. 1997 Sep 24;36(20):4567-4570
Authors: Vila AJ, Ramirez BE, Di Bilio AJ, Mizoguchi TJ, Richards JH, Gray HB
NMR spectra of paramagnetic Co(II) and Cu(II) derivatives of Pseudomonas aeruginosa His46Asp...
[NMR paper] The interaction of acetate and formate with cobalt carbonic anhydrase. An NMR study.
The interaction of acetate and formate with cobalt carbonic anhydrase. An NMR study.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif Related Articles The interaction of acetate and formate with cobalt carbonic anhydrase. An NMR study.
Eur J Biochem. 1992 Sep 15;208(3):607-15
Authors: Bertini I, Luchinat C, Pierattelli R, Vila AJ
The interaction of formate and acetate ions with cobalt-substituted carbonic anhydrase (CA) has been investigated...
Cobalt-based paramagnetic probe to study RNA-protein interactions by NMR
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