The largest database of trusted experimental protocols

39 protocols using nmrpipe

1

NMR Characterization of AtC53 IDR

Check if the same lab product or an alternative is used in the 5 most similar protocols
All NMR spectroscopy measurements were performed using Bruker AVIII 600 MHz or Avance 800 MHz spectrometers at 25°C. The data were processed using TopSpin 3.2 (Bruker) and NMRPipe (Delaglio et al, 1995 (link)) and analyzed using CcpNmr Analysis (Skinner et al, 2016 (link)).
Sequence‐specific backbone assignments of AtC53 IDR were achieved using 2D 1H‐15N HSQC, 3D HNCA, 3D CBCACONH, 3D HNCACB, 3D HNCO, and 3D HNCACO, including 70 residues of 75 nonproline residues (93%). NMR titrations were performed by adding unlabeled protein (75–300 μM) to 100 μM of 15N single‐labeled protein in 50 mM sodium phosphate (pH 7.0), 100 mM NaCl and 10% (v/v) D2O and monitored by two‐dimensional 1H‐15N HSQC.
+ Open protocol
+ Expand
2

NMR Analysis of PEX5 Protein Fragments

Check if the same lab product or an alternative is used in the 5 most similar protocols
NMR experiments for PEX5 (1-113), PEX5 (110-230), PEX5 (228-315) protein fragments were described previously (Gaussmann et al. 2021) . NMR of PEX5 (281-639) was performed at 298 K on a Bruker Avance II 950 MHz spectrometer equipped with cryoprobe. Buffer was exchanged to 20 mM sodium phosphate pH 6.5, 50 mM sodium chloride and 10% D 2 O using size exclusion chromatography. The protein was measured at 750µM in a 5mm Shigemi tube. Sequential assignment of backbone resonances was done by using TROSY versions of standard triple resonance experiments (Sattler M et al. 1999; Weisemann et al. 1993) . NMR spectra were processed using Topspin (Bruker Biospin, Rheinstetten, Germany) or NMRPipe (Delaglio et al. 1995) and analyzed using CcpNMR Analysis 2.4.2 (Vranken et al. 2005) . Secondary chemical shifts, Δδ ( 13 Cα) -Δδ( 13 Cβ) were calculated by subtracting random coil chemical shifts from the observed 13 Cα, 13 Cβ chemical shifts (Kjaergaard and Poulsen 2011; Schwarzinger et al. 2001) .
+ Open protocol
+ Expand
3

NMR Characterization of Isotopically Labeled Proteins

Check if the same lab product or an alternative is used in the 5 most similar protocols
All NMR experiments were carried out at 298 K on 14.1 T (600 MHz), 18.8 T (800 MHz), or 23.5 T (1000 MHz) Bruker spectrometers equipped with triple resonance single (z) or triple (x,y,z) gradient cryoprobes. The experiments were processed with Topspin 4.1 (Bruker) or NMRPipe83 (link) and analyzed with NMRFAM-SPARKY84 and CcpNmrAnalysis85 (link).
Isotopically labeled proteins for NMR were grown in M9 H2O or D2O media supplemented with 15NH4Cl (and 13C-glucose) as the sole nitrogen (and carbon) source.
DNAJB6 with selective 13CH3-ILVM methyl labeling was grown in M9 D2O media supplemented with 15NH4C and [2H,12C]-glucose as the sole carbon source. Then, 60 mg/L of 4-13C-α-keto-butyrate (Cambridge isotope laboratories—CDLM-7318), 80 mg/L of α-ketoisovaleric acid, sodium salt precursor (CDLM-7317-PK) and 100 mg/L of L-Methionine (CLM-206-PK) were added 1 h prior to protein induction to achieve selective 13CH3-methyl labeling.
+ Open protocol
+ Expand
4

NMR Backbone Assignment of KNL1 and pKNL1

Check if the same lab product or an alternative is used in the 5 most similar protocols
The sequence-specific backbone assignment of KNL11–80, KNL123–80 and AURB phosphorylated pKNL11–80 was achieved by recording a 2D [1H,15N] HSQC and 3D NMR spectra including HNCACB, CBCA(CO)NH, HNCA and HN(CO)CA. For KNL11–80 and pKNL11–80 the sequential assignments were verified using a (H)CC(CO)NH. All NMR data were collected on a Bruker Avance 500 MHz (1H Larmor frequency) spectrometer equipped with TCI HCN z-gradient cryoprobe at 298 K (KNL123–80) or 283 K (KNL11–80 and pKNL11–80). All NMR data were processed using Topspin 3.2 (Bruker) or NMRPipe (Delaglio et al., 1995 (link)) and analyzed using CARA (http://www.cara.nmr.ch) or SPARKY (Goddard, T. D. and Kneller, D.G., 2004 ). Chemical shift referencing and secondary structure propensity calculations were performed as previously described (Kumar et al., 2016 (link)).
+ Open protocol
+ Expand
5

NMR Characterization of Biomolecular Interactions

Check if the same lab product or an alternative is used in the 5 most similar protocols
All NMR spectra were recorded on Bruker Avance III 700 and 800 MHz spectrometers equipped with a triple-resonance CryoProbe at 25°C and 15°C. DNA samples (concentration, 0.3–1.0 mM) were dissolved in a buffer containing 10 mM potassium phosphate buffer (pH 6.5). The nuclear overhauser effect spectroscopy in D2O and H2O/D2O (9.5:0.5) were acquired at mixing times of 50, 80, 250, 400 and 500 ms. Total correlation spectroscopy (TOCSY) spectra were recorded with the standard DIPSI-2 spin-lock sequence and a mixing time of 60 and 120 ms. In most of the experiments in H2O, water suppression was achieved by including a WATERGATE module in the pulse sequence before the acquisition. Spectral assignments were completed by NOESY, TOCSY, double-quantum filtered correlation spectroscopy (DQF-COSY) and (13C–1H)-HSQC using standard methods (40 ). Inter-proton distances were deduced from the NOESY experiments at various mixing times. All spectral analyses were performed using TopSpin (Bruker), NMRPipe (41 (link)) and SPARKY (42 ).
+ Open protocol
+ Expand
6

NMR Spectroscopy of Biomolecules

Check if the same lab product or an alternative is used in the 5 most similar protocols
Nuclear magnetic resonance acquisition was carried out at 25°C on either Bruker Avance III 600 MHz, Bruker Avance II+ 700 MHz or Bruker Avance III HD 800 MHz spectrometers equipped with a cryogenic triple‐resonance TCI probes unless otherwise stated. Topspin (Bruker) and NMRpipe (Delaglio et al, 1995) were used for data processing and Sparky (T. D. Goddard and D. G. Kneller, SPARKY 3, UCSF, https://www.cgl.ucsf.edu/home/sparky/) was used for data analysis. 1H, 15N 2D BEST‐TROSY experiments (band‐selective excitation short transients–transverse relaxation‐optimised spectroscopy) were acquired with in‐house optimised Bruker pulse sequences incorporating a recycling delay of 400 ms and 1,024*64 complex points in the 1H, 15N dimension, respectively. High‐quality data sets were collected in approximately 9 min.
+ Open protocol
+ Expand
7

NMR Analysis of hHR23A(223–363) Protein

Check if the same lab product or an alternative is used in the 5 most similar protocols
NMR data were collected on Bruker 600, 700, 800 and 900 MHz AVANCE spectrometers. All spectrometers were equipped with z-axis gradient, triple resonance cryoprobes. Experiments were performed at 291 K and 298 K. Total sequence-specific assignments were obtained from the following experiments (Bax and Grzesiek 1993 ; Sattler et al. 1995 (link); Clore and Gronenborn 1998 (link)): heteronuclear 2D 1H-15N HSQC and 1H-13C HSQC and 3D HNCACB, CBCA(CO)NH, HNCA, HN(CO)CA, HNCO, HN(CA)CO, CC(CO)NH, H(CCCO)NH, HBHA(CO)NH, HCCH-TOCSY (mixing time 10.9 ms) and simultaneously 13C/15N-edited NOESY (mixing time 100 ms) experiments. All data were processed with NMRPipe (Delaglio et al. 1995 (link)) and TopSpin 3.1 (Bruker), and analyzed with CCPN Version 2.3.1 (Vranken et al. 2005 (link)). Proton chemical shifts were referenced directly to internal 2,2-dimethyl-2-silapentane-5-sulfonic acid (DSS) and 13C and 15N chemical shifts were referenced indirectly to DSS using the 13C/1H and 15N/1H frequency ratios (0.251449530 and 0.101329118, respectively) at zero-point (Wishart et al. 1995 (link)). Secondary chemical shifts, ΔCα and ΔCβ (and ΔCα-ΔCβ) are calculated by subtracting random coil values (Wishart et al. 1995 (link)) from the Cα and Cβ shifts of each hHR23A(223–363) residue. The ϕ and ψ backbone torsion angles were obtained from TALOS+ Version 3.80F1 (Shen et al. 2009 (link)).
+ Open protocol
+ Expand
8

NMR Backbone Assignment of eIF4G1 Domains

Check if the same lab product or an alternative is used in the 5 most similar protocols
All samples were prepared in NMR buffer (25 mM potassium phosphate pH 6.5, 25 or 150 mM NaCl, 1 mM DTT, and 10% D2O) and experimental data were acquired at 25°C on a cryoprobe-equipped Bruker AV800 MHz spectrometer. Assignment of the backbone 1H, 15N and 13C atoms was achieved by following the standard methodology. The 3D HNCA, HNCO, HN(CO)CA, CBCA(CO)NH and CBCANH experiments were used for backbone assignment and 3D (H)CCH-TOCSY were recorded to assign side chain resonances [(Sattler et al., 1999 (link)) and the references therein]. Protein concentrations ranged between 100–200 μM. The chemical shifts were deposited in the Biomagnetic Resonance Database (BMRB) with codes 28,121 (eIF4G11-249) and 34,517 (eIF4G135-49-Pub1 RRM3). The 15N backbone amide relaxation T1 and T2 parameters were measured with series of 1H-15N spectra of standard inversion-recovery and Carr-Purcell-Meiboom-Gill sequences (CPMG). NMR spectra were processed using TOPSPIN v4.1 (Bruker) and NMRPipe, and analyses were done with CcpNmr Analysis.
+ Open protocol
+ Expand
9

NMR Spectroscopy of Labeled PAC3 Homodimer

Check if the same lab product or an alternative is used in the 5 most similar protocols
13C- and 15N-labeled non-tagged PAC3 homodimer (0.3 mM) and 15N-labeled non-tagged PAC3 homodimer (0.1 mM), dissolved in PBS (pH 6.8) containing 10% D2O (v/v), 1 mM EDTA, and 0.01% NaN3, were used for spectral assignment and relaxation experiments. All NMR data were acquired at 303 K using DMX-500, AVANCE-500, and AVANCE-800 spectrometers equipped with a 5-mm triple-resonance cryogenic probe (Bruker, Billerica, MA, USA). The NMR data were processed using TOPSPIN (Bruker) and NMRPipe [32 (link)]. Conventional 3D NMR experiments [33 (link)] were carried out for chemical shift assignments of the heteronuclear single-quantum correlation (HSQC) peaks originating from the PAC3 homodimer. Spectral assignments were carried out using SPARKY [34 ] and CCPNMR [35 (link)] software. 15N relaxation parameters, T1, T2, and 15N-1H heteronuclear nuclear Overhauser effect (NOE) were obtained at 303 K using an AVANCE-800 spectrometer and analyzed using the Protein Dynamics software in the Dynamics Center (Bruker).
+ Open protocol
+ Expand
10

NMR Characterization of Shr-Heme Interactions

Check if the same lab product or an alternative is used in the 5 most similar protocols
Shr proteins were dialyzed against 50 mM NaH2PO4/Na2HPO4 pH 6.8, 100 mM NaCl. Buffer-matched Hb in the carbonmonoxy form was titrated into the samples to make Hb(heme basis):ShrH2 at the following ratios: 0:1, 0.2:1, 0.4:1, 0.6:1, 1:1, and 2:1. For the apo-Hb:HID experiments, heme-free Hb (apo-Hb) was prepared as previously described and added to ShrH1 or ShrH2 at a 4:1 ratio (70 (link)–72 (link, no link found)). For the holo-Mb experiments with ShrH1 and ShrH2, the holo form of myoglobin (holo-Mb) was purchased from Sigma-Aldrich and further purified by gel-filtration chromatography with a Superdex S75 size-exclusion column prior to addition to ShrH1 or ShrH2. An 1H-15N HSQC spectrum was recorded at each titration point. NMR experiments were performed at 298K on Bruker DRX 500 and 600 MHz spectrometers equipped with triple resonance cryogenic probes. NMR spectra were processed using NMRPipe and TopSpin 3.5 (Bruker BioSpin) and analyzed using NMRFAM-SPARKY (73 (link), 74 (link)). Resonances arising from disordered regions of the protein were excluded from quantification.
+ Open protocol
+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required

Sign up now

Revolutionizing how scientists
search and build protocols!