Abstract:
:This paper presents new methods designed for quantitative analysis of chemical shift perturbation NMR spectra. The methods automatically trace the displacements of cross peaks between a perturbed test spectrum and the reference spectrum (or among a series of titration spectra), and measure the changes of chemical shifts, heights, and widths of the altered peaks. The methods are primary aimed at the (1)H-(15)N HSQC spectra of relatively small proteins (<15 kDa) assuming fast exchange between free and ligand-bound states on the chemical shift time scale, or for comparing spectra of free and fully bound states in the slow exchange situation. Using the (1)H-(15)N HSQC spectra from a titration experiment of the 74-residue Pex13p SH3 domain with a Pex14p peptide ligand (14 residues, K (d)= approximately 40 microM), we demonstrate the scope and limits of our automatic peak tracing (APET) algorithm for efficient scoring of high-throughput SAR by NMR type HSQC spectra, and progressive peak tracing (PROPET) algorithm for detailed analysis of ligand titration spectra. Simulated spectra with low signal-to-noise ratios (S/N ranged from 20 to 1) were used to demonstrate the reliability and reproducibility of the results when dealing with poor quality spectra. These algorithms have been implemented in a new software module, FELIX-Autoscreen, for streamlined processing, analysis and visualization of SAR by NMR and other high-throughput receptor/ligand interaction experiments.
journal_name
J Biomol NMRjournal_title
Journal of biomolecular NMRauthors
Peng C,Unger SW,Filipp FV,Sattler M,Szalma Sdoi
10.1023/B:JNMR.0000034351.37982.9esubject
Has Abstractpub_date
2004-08-01 00:00:00pages
491-504issue
4eissn
0925-2738issn
1573-5001pii
5276476journal_volume
29pub_type
杂志文章abstract::The importance of protein chemical shift values for the determination of three-dimensional protein structure has increased in recent years because of the large databases of protein structures with assigned chemical shift data. These databases have allowed the investigation of the quantitative relationship between chem...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1023060720156
更新日期:2003-05-01 00:00:00
abstract::Protein structure determination by NMR methods has started in the mid-eighties and has been growing steadily since then. Ca. 14% of the protein structures deposited in the PDB have been solved by NMR. The evaluation of the quality of NMR structures however is still lacking a well-established practice. In this work, we...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-008-9228-4
更新日期:2008-04-01 00:00:00
abstract::We discuss the optimum experimental conditions to obtain assignment spectra for solid proteins at magic-angle spinning (MAS) frequencies around 100 kHz. We present a systematic examination of the MAS dependence of the amide proton T 2' times and a site-specific comparison of T 2' at 93 kHz versus 60 kHz MAS frequency....
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-015-9975-y
更新日期:2015-10-01 00:00:00
abstract::A new method, a restrained Monte Carlo (rMC) calculation, is demonstrated for generating high-resolution structures of DNA oligonucleotides in solution from interproton distance restraints and bounds derived from complete relaxation matrix analysis of two-dimensional nuclear Overhauser effect (NOE) spectral peak inten...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00174609
更新日期:1993-09-01 00:00:00
abstract::We demonstrate a novel sparse (13)C labelling approach for methylotrophic yeast P. pastoris expression system, towards solid-state NMR studies of eukaryotic membrane proteins. The labelling scheme was achieved by co-utilizing natural abundance methanol and specifically (13)C labelled glycerol as carbon sources in the ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-016-0033-1
更新日期:2016-05-01 00:00:00
abstract::One-dimensional transient NOE build-up curves were measured for the synthetic disaccharide alpha-D-Fuc-(1-->4)-beta-D-GlcNAc 1 utilizing Gaussian shaped pulses. Simulated build-up curves from Metropolis Monte Carlo simulations were compared to the experimental data. Disaccharide 1 is structurally related to methyl bet...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00176007
更新日期:1993-07-01 00:00:00
abstract::No matter the source of compounds, drug discovery campaigns focused directly on the target are entirely dependent on a consistent stream of reliable data that reports on how a putative ligand interacts with the protein of interest. The data will derive from many sources including enzyme assays and many types of biophy...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-020-00343-9
更新日期:2020-11-01 00:00:00
abstract::New methods are described for accurate measurement of multiple residual dipolar couplings in nucleic acid bases. The methods use TROSY-type pulse sequences for optimizing resolution and sensitivity, and rely on the E.COSY principle to measure the relatively small two-bond (2)D(CH) couplings at high precision. Measurem...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-005-1846-5
更新日期:2004-11-01 00:00:00
abstract::The (13)C(alpha) chemical shifts for 16,299 residues from 213 conformations of four proteins (experimentally determined by X-ray crystallography and Nuclear Magnetic Resonance methods) were computed by using a combination of approaches that includes, but is not limited to, the use of density functional theory. Initial...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-007-9162-x
更新日期:2007-07-01 00:00:00
abstract::A pulse sequence is described for recording single-quantum (13)C-methyl relaxation dispersion profiles of (13)C-selectively labeled methyl groups in proteins that offers significant improvements in sensitivity relative to existing approaches where initial magnetization derives from (13)C polarization. Sensitivity gain...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-007-9149-7
更新日期:2007-05-01 00:00:00
abstract::Lanthanide complexes based on the DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) cage are commonly used as phase contrast agents in magnetic resonance imaging, but can also be utilized in structural NMR applications due to their ability to induce either paramagnetic relaxation enhancement or a pseudoc...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-016-0061-x
更新日期:2016-10-01 00:00:00
abstract::Understanding of the molecular mechanisms of protein function requires detailed insight into the conformational landscape accessible to the protein. Conformational changes can be crucial for biological processes, such as ligand binding, protein folding, and catalysis. NMR spectroscopy is exquisitely sensitive to such ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-018-0193-2
更新日期:2018-06-01 00:00:00
abstract::Protein-ligand titrations can readily be monitored with a trimethylsilyl (TMS) tag. Owing to the intensity, narrow line shape and unique chemical shift of a TMS group, dissociation constants can be determined from straightforward 1D 1H-NMR spectra not only in the fast but also in the slow exchange limit. The tag is ea...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-018-0173-6
更新日期:2018-04-01 00:00:00
abstract::The interference between conformational exchange-induced time-dependent variations of chemical shifts in a pair of scalar coupled 1H and 15N spins is used to construct novel TROSY-type NMR experiments to suppress NMR signal loss in [15N,1H]-correlation spectra of a 14-mer DNA duplex free in solution and complexed with...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1011208109853
更新日期:2001-07-01 00:00:00
abstract::The discovery of the TROSY effect (Pervushin et al. in Proc Natl Acad Sci USA 94:12366-12371, 1997) for reducing transverse relaxation and line sharpening through selecting pathways in which dipole-dipole and CSA Hamiltonians partially cancel each other had a tremendous impact on solution NMR studies of macromolecules...
journal_title:Journal of biomolecular NMR
pub_type: 信件
doi:10.1007/s10858-016-0075-4
更新日期:2016-12-01 00:00:00
abstract::We report site-resolved observation of hydrogen exchange in the micro-crystalline protein Crh. Our approach is based on the use of proton T2' -selective 1H-13C-13C correlation spectra for site-specific assignments of carbons nearby labile protein protons. We compare the proton T2' selective scheme to frequency selecti...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-005-8073-y
更新日期:2005-07-01 00:00:00
abstract::The NMRPipe system is a UNIX software environment of processing, graphics, and analysis tools designed to meet current routine and research-oriented multidimensional processing requirements, and to anticipate and accommodate future demands and developments. The system is based on UNIX pipes, which allow programs runni...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00197809
更新日期:1995-11-01 00:00:00
abstract::Many regulatory RNAs undergo dynamic exchanges that are crucial for their biological functions and NMR spectroscopy is a versatile tool for monitoring dynamic motions of biomolecules. Meaningful information on biomolecular dynamics requires an accurate measurement of relaxation parameters such as longitudinal (R1) rat...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-020-00315-z
更新日期:2020-07-01 00:00:00
abstract::Simultaneous data acquisition in time-sharing (TS) multi-dimensional NMR experiments has been shown an effective means to reduce experimental time, and thus to accelerate structure determination of proteins. This has been accomplished by spin evolution time-sharing of the X and Y heteronuclei, such as (15)N and (13)C,...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1025407905478
更新日期:2003-11-01 00:00:00
abstract::The 3D HCCH-TOCSY and HCC(CO)NH-TOCSY experiments provide through bond connectivity and are used for side-chain chemical shift assignment by solution-state NMR. Careful design and implementation of the pulse sequence are key to the successful application of the technique particularly when trying to extract the maximum...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-020-00310-4
更新日期:2020-05-01 00:00:00
abstract::An approach to the determination of the 2-(13)C' chemical shift (CS) tensor orientation in pyrimidine bases via heteronuclear MAS NMR spectroscopy is presented. Considering a dipolar coupled spin 1/2 network of the type S1-I-S2 consisting of directly bonded heteronuclear spins, we have carried out numerical simulation...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1008318530946
更新日期:2000-10-01 00:00:00
abstract::We perform a detailed comparison of fast backbone dynamics probed at amide nitrogen versus carbonyl carbon sites for dematin headpiece C-terminal domain (DHP) and its S74E mutant (DHPS74E). Carbonyl dynamics is probed via auto-correlated longitudinal rates and transverse C'/C'-C(alpha) CSA/dipolar and C'/C'-N CSA/dipo...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-010-9417-9
更新日期:2010-06-01 00:00:00
abstract::Cytochrome c552 from the thermophilic bacterium Hydrogenobacter thermophilus is a typical c-type cytochrome which binds heme covalently via two thioether bonds between the two heme vinyl groups and two cysteine thiol groups in a CXXCH sequence motif. This protein was converted to a b-type cytochrome by substitution of...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-015-9938-3
更新日期:2015-06-01 00:00:00
abstract::Hydroxyl protons on serine and threonine residues are not well characterized in protein structures determined by both NMR spectroscopy and X-ray crystallography. In the case of NMR spectroscopy, this is in large part because hydroxyl proton signals are usually hidden under crowded regions of (1)H-NMR spectra and remai...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-013-9799-6
更新日期:2014-01-01 00:00:00
abstract::Protein molecules sample different conformations in solution and characterizing these conformations is crucial to understanding protein function. 15N CEST experiments are now routinely used to study slow conformational exchange of protein molecules between a 'visible' major state and 'invisible' minor states. These ex...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-018-00223-3
更新日期:2019-02-01 00:00:00
abstract::A method is proposed to determine the conformational equilibrium of flexible polypeptides in solution, using the data provided by NMR spectroscopy and theoretical conformational calculations. The algorithm consists of the following three steps: (i) search of the conformational space in order to find conformations with...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1008349424452
更新日期:1999-12-01 00:00:00
abstract::Protein structure determination of low affinity complexes of interacting macromolecules is often hampered by a lack of observable NOEs between the binding partners. Covalent linkage offers a way to shift the equilibrium of the interaction partners to the bound state. Here we show that a single-chain protein containing...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1024983029700
更新日期:2003-10-01 00:00:00
abstract::An 'isotopomer-selected NOE' (ISNOE) method for the unequivocal identification of mutually hydrogen-bond-linked hydroxyl groups is described. It relies on the fact that the OH group's signal patterns obtained for a partially deuterated sample originate from both isotopomers of the 'partner' hydroxyl, whereas a NOE for...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/A:1008237308320
更新日期:1998-07-01 00:00:00
abstract::We have developed an improved isotope-filtered pulse scheme in combination with a double-tuned filter, a hyperbolic secant inversion pulse, and a z-filter with a pulsed field gradient. These filtering pulse schemes have been incorporated into several one-, two-, and three-dimensional experiments, which were applied to...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00228150
更新日期:1996-12-01 00:00:00
abstract::19F solid-state NMR is an excellent approach for measuring long-range distances for structure determination and for studying molecular motion. For multi-fluorinated proteins, assignment of 19F chemical shifts has been traditionally carried out using mutagenesis. Here we show 2D 19F-13C correlation experiments that all...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-020-00306-0
更新日期:2020-03-01 00:00:00