Quantitative Analysisof Multisite Protein–LigandInteractions by NMR: Binding of Intrinsically Disordered p53 TransactivationSubdomains with the TAZ2 Domain of CBP
Quantitative Analysisof Multisite Protein–LigandInteractions by NMR: Binding of Intrinsically Disordered p53 TransactivationSubdomains with the TAZ2 Domain of CBP
High dimensional and high resolution pulse sequences for backbone resonance assignment of intrinsically disordered proteins
High dimensional and high resolution pulse sequences for backbone resonance assignment of intrinsically disordered proteins
Abstract Four novel 5D (HACA(N)CONH, HNCOCACB, (HACA)CON(CA)CONH, (H)NCO(NCA)CONH), and one 6D ((H)NCO(N)CACONH) NMR pulse sequences are proposed. The new experiments employ non-uniform sampling that enables achieving high resolution in indirectly detected dimensions. The experiments facilitate resonance assignment of intrinsically disordered proteins. The novel pulse sequences were successfully tested using δ subunit (20 kDa) of Bacillus subtilis RNA polymerase...
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02-21-2012 03:40 AM
Paramagnetic relaxation enhancement to improve sensitivity of fast NMR methods: application to intrinsically disordered proteins
Paramagnetic relaxation enhancement to improve sensitivity of fast NMR methods: application to intrinsically disordered proteins
Abstract We report enhanced sensitivity NMR measurements of intrinsically disordered proteins in the presence of paramagnetic relaxation enhancement (PRE) agents such as Ni2+-chelated DO2A. In proton-detected 1H-15N SOFAST-HMQC and carbon-detected (H-flip)13CO-15N experiments, faster longitudinal relaxation enables the usage of even shorter interscan delays. This results in higher NMR signal intensities per units of experimental time, without adverse line...
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10-21-2011 10:04 PM
Backbone and side chain NMR assignments for the intrinsically disordered cytoplasmic domain of human neuroligin-3.
Backbone and side chain NMR assignments for the intrinsically disordered cytoplasmic domain of human neuroligin-3.
Backbone and side chain NMR assignments for the intrinsically disordered cytoplasmic domain of human neuroligin-3.
Biomol NMR Assign. 2011 Jun 7;
Authors: Wood K, Paz A, Dijkstra K, Scheek RM, Otten R, Silman I, Sussman JL, Mulder FA
Neuroligins act as heterophilic adhesion molecules at neuronal synapses. Their cytoplasmic domains interact with synaptic scaffolding proteins, and have been shown to be intrinsically disordered. Here we...
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06-08-2011 11:30 AM
Covalent structural changes in unfolded GroES that lead to amyloid fibril formation detected by NMR: Insight into intrinsically disordered proteins.
Covalent structural changes in unfolded GroES that lead to amyloid fibril formation detected by NMR: Insight into intrinsically disordered proteins.
Covalent structural changes in unfolded GroES that lead to amyloid fibril formation detected by NMR: Insight into intrinsically disordered proteins.
J Biol Chem. 2011 Apr 20;
Authors: Iwasa H, Meshitsuka S, Hongo K, Mizobata T, Kawata Y
Co-chaperonin GroES from E. coli works with chaperonin GroEL to mediate the folding reactions of various proteins. However, under specific conditions, i. e., the...
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04-22-2011 02:00 PM
ncIDP-assign: A SPARKY extension for the effective NMR assignment of intrinsically disordered proteins.
ncIDP-assign: A SPARKY extension for the effective NMR assignment of intrinsically disordered proteins.
ncIDP-assign: A SPARKY extension for the effective NMR assignment of intrinsically disordered proteins.
Bioinformatics. 2011 Mar 3;
Authors: Tamiola K, Mulder FA
SUMMARY: We describe here the ncIDP-assign extension for the popular NMR assignment programme SPARKY, which aids in the sequence-specific resonance assignment of intrinsically disordered proteins (IDPs). The assignment plugin greatly facilitates the effective matching of a set of...
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03-05-2011 01:02 PM
Extension of the HA-detection based approach: (HCA)CON(CA)H and (HCA)NCO(CA)H experiments for the main-chain assignment of intrinsically disordered proteins
Extension of the HA-detection based approach: (HCA)CON(CA)H and (HCA)NCO(CA)H experiments for the main-chain assignment of intrinsically disordered proteins
Abstract Extensive resonance overlap exacerbates assignment of intrinsically disordered proteins (IDPs). This issue can be circumvented by utilizing 15N, 13C� and 1HN spins, where the chemical shift dispersion is mainly dictated by the characteristics of consecutive amino acid residues. Especially 15N and 13C� spins offer superior chemical shift dispersion in comparison to 13Cα and 13Cβ spins. However, HN-detected experiments...
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01-29-2011 05:31 AM
Random coil chemical shift for intrinsically disordered proteins: effects of temperature and pH
Random coil chemical shift for intrinsically disordered proteins: effects of temperature and pH
Abstract Secondary chemical shift analysis is the main NMR method for detection of transiently formed secondary structure in intrinsically disordered proteins. The quality of the secondary chemical shifts is dependent on an appropriate choice of random coil chemical shifts. We report random coil chemical shifts and sequence correction factors determined for a GGXGG peptide series following the approach of Schwarzinger et al. (J Am Chem Soc 123(13):2970â??2978, 2001). The chemical shifts are...
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01-17-2011 02:40 AM
HA-detected experiments for the backbone assignment of intrinsically disordered prote
Abstract We propose a new alpha proton detection based approach for the sequential assignment of natively unfolded proteins. The proposed protocol superimposes on following features: HA-detection (1) enables assignment of natively unfolded proteins at any pH, i.e., it is not sensitive to rapid chemical exchange undergoing in natively unfolded proteins even at moderately high pH. (2) It allows straightforward assignment of proline-rich polypeptides without additional proline-customized experiments. (3) It offers more streamlined and less ambiguous assignment based on solely intraresidual...