Abstract:
:Two-dimensional versions of HNCA and HNCO experiments are described, which provide essentially the same information as the 3D sequence. A multiple-quantum coherence involving either 15N and 13C alpha or 15N and 13CO is created. One of the two frequencies is given by the middle point between the two cross peaks (zero- and double-quantum) and the other by their separation. Quadrature detection can be performed on either nucleus, modifying only the appearance of the 2D spectrum, but not the information content. These experiments, named MQ-HNCA and MQ-HNCO, are illustrated on a (15N, 13C) doubly labelled cytochrome c2 from Rhodobacter capsulatus (116 amino acids).
journal_name
J Biomol NMRjournal_title
Journal of biomolecular NMRauthors
Simorre JP,Brutscher B,Caffrey MS,Marion Ddoi
10.1007/BF00179343subject
Has Abstractpub_date
1994-05-01 00:00:00pages
325-33issue
3eissn
0925-2738issn
1573-5001journal_volume
4pub_type
杂志文章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::As part of efforts to develop improved methods for NMR protein sample preparation and structure determination, the Northeast Structural Genomics Consortium (NESG) has implemented an NMR screening pipeline for protein target selection, construct optimization, and buffer optimization, incorporating efficient microscale ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-009-9386-z
更新日期:2010-01-01 00:00:00
abstract::We recently engineered encodable lanthanide binding tags (LBTs) into proteins and demonstrated their applicability in Nuclear Magnetic Resonance (NMR) spectroscopy, X-ray crystallography and luminescence studies. Here, we engineered two-loop-LBTs into the model protein interleukin-1β (IL1β) and measured (1)H, (15)N-ps...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-015-9984-x
更新日期:2015-11-01 00:00:00
abstract::Based on high-resolution structures of the free molecules accurate determination of structures of protein complexes by NMR spectroscopy is possible using residual dipolar couplings. In order, however, to be able to apply these methods, protein backbone resonances have to be assigned first. This NMR assignment process ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1024768328860
更新日期:2003-09-01 00:00:00
abstract::Segmental isotopic labeling can facilitate NMR studies of large proteins, multi-domain proteins, and proteins with repetitive sequences by alleviating NMR signal overlaps. Segmental isotopic labeling also allows us to investigate an individual domain in the context of a full-length protein by NMR. Several established ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-018-0175-4
更新日期:2018-08-01 00:00:00
abstract::The icosahedral bacteriophage T7 is a 50 MDa double-stranded DNA (dsDNA) virus that infects Escherichia coli. Although there is substantial information on the physical and morphological properties of T7, structural information, based mostly on Raman spectroscopy and cryo-electron microscopy, is limited. Here, we apply...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-014-9840-4
更新日期:2014-08-01 00:00:00
abstract::In 2HJ(NN)-COSY experiments, which correlate protons with donor/acceptor nitrogens across Nd...HNa bonds, the receptor nitrogen needs to be assigned in order to unambiguously identify the hydrogen bond. For many situations this is a non-trivial task which is further complicated by poor dispersion of (Na,Nd) resonances...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1013340227140
更新日期:2001-12-01 00:00:00
abstract::A new homonuclear Hartmann-Hahn-type mixing scheme is introduced that effects coherence transfer between resonances in two separated frequency bands. The mixing scheme relies on the irradiation of two-band selective shaped pulses that are expanded in an MLEV-16 supercycle. Similar to heteronuclear Hartmann-Hahn experi...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00211162
更新日期:1996-09-01 00:00:00
abstract::Signal overlapping is a major bottleneck for protein NMR analysis. We propose a new method, stable-isotope-assisted parameter extraction (SiPex), to resolve overlapping signals by a combination of amino-acid selective isotope labeling (AASIL) and tensor decomposition. The basic idea of Sipex is that overlapping signal...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-019-00295-9
更新日期:2020-03-01 00:00:00
abstract::The ability to simultaneously measure many long-range distances is critical to efficient and accurate determination of protein structures by solid-state NMR (SSNMR). So far, the most common distance constraints for proteins are 13C-15N distances, which are usually measured using the rotational-echo double-resonance (R...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-018-0187-0
更新日期:2018-05-01 00:00:00
abstract::Recent efforts to reduce the measurement time for multidimensional NMR experiments have fostered the development of a variety of new procedures for sampling and data processing. We recently described concentric ring sampling for 3-D NMR experiments, which is superior to radial sampling as input for processing by a mul...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-008-9275-x
更新日期:2008-12-01 00:00:00
abstract::Pulsed field gradients were incorporated into the HCACO experiment for acquiring spectra on isotopically enriched protein samples dissolved in H2O. Excellent water suppression and spectral quality were achieved using the modified pulse sequence (gd-HCACO), as demonstrated for a 13C-/15N-labeled sample of the SH2 domai...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00202041
更新日期:1996-05-01 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::Two new techniques offering considerable improvements in the quality of 1H photo-CIDNP spectra of proteins are demonstrated. Both focus on the problem of progressive photo-degradation of the flavin dye used to generate polarization in exposed tryptophan, tyrosine and histidine side-chains. One approach uses rapid addi...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1008351128089
更新日期:2000-03-01 00:00:00
abstract::2D 15N-1H correlation spectra are ideal for measuring backbone amide populations to determine amide exchange protection factors in studies of protein folding or other structural features. Most protein NMR spectroscopists use HSQC, which has been shown to be generally superior to HMQC in both resolution and sensitivity...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00182288
更新日期:1995-06-01 00:00:00
abstract::The use of dipolar shifts as important constraints in refining molecular structure of paramagnetic metalloproteins by solution NMR is now well established. A crucial initial step in this procedure is the determination of the orientation. of the anisotropic paramagnetic susceptibility tensor in the molecular frame whic...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1008309121949
更新日期:2000-06-01 00:00:00
abstract::NMR spectroscopy provides a powerful approach for the characterisation of chemical exchange and molecular interactions by analysis of series of experiments acquired over the course of a titration measurement. The appearance of NMR resonances undergoing chemical exchange depends on the frequency difference relative to ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-019-00297-7
更新日期:2020-01-01 00:00:00
abstract::Resonance assignment is a prerequisite for almost any NMR-based study of proteins. It can be very challenging in some cases, however, due to the nature of the protein under investigation. This is the case with intrinsically disordered proteins, for example, whose NMR spectra suffer from low chemical shifts dispersion ...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-016-0024-2
更新日期:2016-03-01 00:00:00
abstract::A three-dimensional 1H, 13C, 31P triple resonance experiment, HCP-CCH-TOCSY, is presented which provides unambiguous through-bond correlation of all 1H ribose protons on the 5' and 3' sides of the intervening phosphorus along the backbone bonding network in 13C-labeled RNA oligonucleotides. The correlation of the comp...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00227473
更新日期:1995-01-01 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::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::Mollib is a software framework for the analysis of molecular structures, properties and data with an emphasis on data collected by NMR. It uses an open source model and a plugin framework to promote community-driven development of new and enhanced features. Mollib includes tools for the automatic retrieval and caching...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-017-0142-5
更新日期:2017-10-01 00:00:00
abstract::The assignment of protein backbone and side-chain NMR chemical shifts is the first step towards the characterization of protein structure. The recent introduction of proton detection in combination with fast MAS has opened up novel opportunities for assignment experiments. However, typical 3D sequential-assignment exp...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-018-0207-0
更新日期:2018-10-01 00:00:00
abstract::Senktide is a highly specific and potent analog of neurokinin B, the natural ligand of the tachykinin receptor NK-3. The membrane-bound conformation of senktide, interacting with negatively charged membrane vesicles composed of perdeuterated phosphatidylcholine and phosphatidylglycerol (70:30), has been investigated u...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/BF00176010
更新日期:1993-07-01 00:00:00
abstract::A new isotope labeling technique for peptide segments in a protein sample was recently established using the protein splicing element intein [Yamazaki et al. (1998) J. Am. Chem. Soc., 120, 5591-5592]. This method makes it possible to observe signals of a selected amino (N-) or carboxyl (C-) terminal region along a pep...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1008308128050
更新日期:1999-06-01 00:00:00
abstract::Dynamics of large-amplitude conformational motions in proteins are complex and less understood, although these processes are intimately associated with structure, folding, stability, and function of proteins. Here, we use a large set of spectra obtained by cross-relaxation suppressed exchange NMR spectroscopy (EXSY) t...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-007-9186-2
更新日期:2007-11-01 00:00:00
abstract::A computer program has been developed to accurately and automatically predict the 1H and 13C chemical shifts of unassigned proteins on the basis of sequence homology. The program (called SHIFTY) uses standard sequence alignment techniques to compare the sequence of an unassigned protein against the BioMagResBank--a pu...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1023/a:1018373822088
更新日期:1997-12-01 00:00:00
abstract::Due to practical limitations in available 15N rf field strength, imperfections in 15N 180 degrees pulses arising from off-resonance effects can result in significant sensitivity loss, even if the chemical shift offset is relatively small. Indeed, in multi-dimensional NMR experiments optimized for protein backbone amid...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-006-9089-7
更新日期:2006-12-01 00:00:00
abstract::A simple triple resonance NMR experiment that leads to the correlation of the backbone amide resonances of each amino acid residue 'i' with that of residues 'i-1' and 'i+1' in ((13)C, (15)N) labelled intrinsically disordered proteins (IDPs) is presented. The experimental scheme, {HN-NCA heteronuclear TOCSY-NH}, exploi...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-015-9976-x
更新日期:2015-10-01 00:00:00
abstract::Carr-Purcell-Meiboom-Gill (CPMG) relaxation dispersion NMR experiments are extremely powerful for characterizing millisecond time-scale conformational exchange processes in biomolecules. A large number of such CPMG experiments have now emerged for measuring protein backbone chemical shifts of sparsely populated (>0.5%...
journal_title:Journal of biomolecular NMR
pub_type: 杂志文章
doi:10.1007/s10858-009-9310-6
更新日期:2009-09-01 00:00:00