Related ArticlesThe NOESY jigsaw: automated protein secondary structure and main-chain assignment from sparse, unassigned NMR data.
J Comput Biol. 2000;7(3-4):537-58
Authors: Bailey-Kellogg C, Widge A, Kelley JJ, Berardi MJ, Bushweller JH, Donald BR
High-throughput, data-directed computational protocols for Structural Genomics (or Proteomics) are required in order to evaluate the protein products of genes for structure and function at rates comparable to current gene-sequencing technology. This paper presents the JIGSAW algorithm, a novel high-throughput, automated approach to protein structure characterization with nuclear magnetic resonance (NMR). JIGSAW applies graph algorithms and probabilistic reasoning techniques, enforcing first-principles consistency rules in order to overcome a 5-10% signal-to-noise ratio. It consists of two main components: (1) graph-based secondary structure pattern identification in unassigned heteronuclear NMR data, and (2) assignment of spectral peaks by probabilistic alignment of identified secondary structure elements against the primary sequence. Deferring assignment eliminates the bottleneck faced by traditional approaches, which begin by correlating peaks among dozens of experiments. JIGSAW utilizes only four experiments, none of which requires 13C-labeled protein, thus dramatically reducing both the amount and expense of wet lab molecular biology and the total spectrometer time. Results for three test proteins demonstrate that JIGSAW correctly identifies 79-100% of alpha-helical and 46-65% of beta-sheet NOE connectivities and correctly aligns 33-100% of secondary structure elements. JIGSAW is very fast, running in minutes on a Pentium-class Linux workstation. This approach yields quick and reasonably accurate (as opposed to the traditional slow and extremely accurate) structure calculations. It could be useful for quick structural assays to speed data to the biologist early in an investigation and could in principle be applied in an automation-like fashion to a large fraction of the proteome.
Exclusively NOESY-based automated NMR assignment and structure determination of proteins
Exclusively NOESY-based automated NMR assignment and structure determination of proteins
Abstract A fully automated method is presented for determining NMR solution structures of proteins using exclusively NOESY spectra as input, obviating the need to measure any spectra only for obtaining resonance assignments but devoid of structural information. Applied to two small proteins, the approach yielded structures that coincided closely with conventionally determined structures.
Content Type Journal Article
Pages 1-10
DOI 10.1007/s10858-011-9502-8
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Exclusively NOESY-based automated NMR assignment and structure determination of proteins.
Exclusively NOESY-based automated NMR assignment and structure determination of proteins.
Exclusively NOESY-based automated NMR assignment and structure determination of proteins.
J Biomol NMR. 2011 Mar 30;
Authors: Ikeya T, Jee JG, Shigemitsu Y, Hamatsu J, Mishima M, Ito Y, Kainosho M, Güntert P
A fully automated method is presented for determining NMR solution structures of proteins using exclusively NOESY spectra as input, obviating the need to measure any spectra only for obtaining resonance assignments but devoid of structural information....
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03-31-2011 06:24 PM
An intraresidual i(HCA)CO(CA)NH experiment for the assignment of main-chain resonances in 15N, 13C labeled proteins
An intraresidual i(HCA)CO(CA)NH experiment for the assignment of main-chain resonances in 15N, 13C labeled proteins
Abstract An improved pulse sequence, intraresidual i(HCA)CO(CA)NH, is described for establishing solely 13Câ?²(i), 15N(i), 1HN(i) connectivities in uniformly 15N/13C-labeled proteins. In comparison to the â??out-and-backâ?? style intra-HN(CA)CO experiment, the new pulse sequence offers at least two-fold higher experimental resolution in the 13Câ?² dimension and on average 1.6 times higher sensitivity especially for residues in α-helices. Performance of the new experiment...
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01-09-2011 12:46 PM
[NMR paper] Protein NMR structure determination with automated NOE-identification in the NOESY sp
Protein NMR structure determination with automated NOE-identification in the NOESY spectra using the new software ATNOS.
Related Articles Protein NMR structure determination with automated NOE-identification in the NOESY spectra using the new software ATNOS.
J Biomol NMR. 2002 Nov;24(3):171-89
Authors: Herrmann T, Güntert P, Wüthrich K
Novel algorithms are presented for automated NOESY peak picking and NOE signal identification in homonuclear 2D and heteronuclear-resolved 3D -NOESY spectra during de novo protein structure determination by NMR,...
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11-24-2010 08:58 PM
[NMR paper] Automated assignment of NOESY NMR spectra using a knowledge based method (KNOWNOE).
Automated assignment of NOESY NMR spectra using a knowledge based method (KNOWNOE).
Related Articles Automated assignment of NOESY NMR spectra using a knowledge based method (KNOWNOE).
J Biomol NMR. 2002 Aug;23(4):271-87
Authors: Gronwald W, Moussa S, Elsner R, Jung A, Ganslmeier B, Trenner J, Kremer W, Neidig KP, Kalbitzer HR
Automated assignment of NOESY spectra is a prerequisite for automated structure determination of biological macromolecules. With the program KNOWNOE we present a novel, knowledge based approach to this problem. KNOWNOE...
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[NMR paper] Main chain and side chain dynamics of a heme protein: 15N and 2H NMR relaxation studi
Main chain and side chain dynamics of a heme protein: 15N and 2H NMR relaxation studies of R. capsulatus ferrocytochrome c2.
Related Articles Main chain and side chain dynamics of a heme protein: 15N and 2H NMR relaxation studies of R. capsulatus ferrocytochrome c2.
Biochemistry. 2001 Jun 5;40(22):6559-69
Authors: Flynn PF, Bieber Urbauer RJ, Zhang H, Lee AL, Wand AJ
A detailed characterization of the main chain and side chain dynamics in R. capsulatus ferrocytochrome c(2) derived from (2)H NMR relaxation of methyl group resonances is...
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11-19-2010 08:32 PM
[NMR paper] Refinement of the main chain directed assignment strategy for the analysis of 1H NMR
Refinement of the main chain directed assignment strategy for the analysis of 1H NMR spectra of proteins.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-cellhub.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Refinement of the main chain directed assignment strategy for the analysis of 1H NMR spectra of proteins.
Biophys J. 1991 May;59(5):1101-12
Authors: Wand AJ, Nelson SJ
The underlying basis of the main...
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08-21-2010 11:16 PM
Automated amino acid side-chain NMR assignment of proteins using 13C- and 15N-resolved 3D [1H,1H]-NOESY
Automated amino acid side-chain NMR assignment of proteins using 13C- and 15N-resolved 3D -NOESY
Francesco Fiorito, Torsten Herrmann, Fred F. Damberger and Kurt Wüthrich
Journal of Biomolecular NMR; 2008; 42(1); pp 23-33
Abstract
ASCAN is a new algorithm for automatic sequence-specific NMR assignment of amino acid side-chains in proteins, which uses as input the primary structure of the protein, chemical shift lists of 1HN, 15N, 13Cα, 13Cβ and possibly 1Hα from the previous polypeptide backbone assignment, and one or several 3D 13C- or 15N-resolved -NOESY spectra. ASCAN has also been...
The NOESY jigsaw: automated protein secondary structure and main-chain assignment fro
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