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High-Field Nuclear Magnetic Resonance

High-Field Nuclear Magnetic Resonance Leading-edge Equipment Home

Equipment Introduction

A 900 MHz nuclear magnetic resonance spectrometer, a core equipment for the study of biomolecular structure and development of new drugs, is installed at the Ochang Center. It is utilized as national collaborative research equipment.

Characteristics of the Equipment

  • The sensitivity of the cryogenic probe to 1H is more than four times (8,000) that of conventional room temperature probes, so the experiment time can be shortened to 1/16
  • Protein structural studies can be performed with 100-μM or lower concentration samples
  • Minimum mass for 13C experiments on natural products is approximately 100 μg

Representative Research Case

Ligand mediated folding of the AbOmpA-PD

The folding of AbOmpA-PD is mediated by the ligand binding. AbOmpA-PD exists as a mixture of partially folded forms in the absence of the ligand. Using 900-MHz NMR, a 15N-relaxation dispersion CPMG experiment reveals the presence of millisecond timescale motion of the apo-state, and the molecular mechanism of the ligand-mediated folding of AbOmpA-PD.

Analysis of milli-second time-scale motion of AbOmpA-PD in the apo-state II

Application

  • Analysis of protein structure and interactions
  • Self-assembly compound analysis

Representative Research Papers

  • Dimeric- and trimeric sesquiterpenes from the flower of Inula japonica
    Jin Q., Lee J.W., Jang H., Lee H.L., Kim J.G., Wu W., Lee D., Kim E.-H., Kim Y., Hong J.T., Lee M.K., Hwang B.Y.,
    Phytochemistry, 2018, 155 (1), pp 107-113, doi:10.1016/j.phytochem.2018.07.008
  • Facilitated Protein Association via Engineered Target Search Pathways Visualized by Paramagnetic NMR Spectroscopy
    An S.Y., Kim E.-H., Suh J.-Y.,
    Structure, 2018, 26 (6), pp 887-89300, doi:10.1016/j.str.2018.04.009
  • Diverse Metabolite Variations in Tea (Camellia sinensis L.) Leaves Grown under Various Shade Conditions Revisited: A Metabolomics Study
    Ji H.-G., Lee Y.-R., Lee M.-S., Hwang K.H., Park C.Y., Kim E.-H., Park J.S., Hong Y.-S.,
    Journal of Agricultural and Food Chemistry, 2018, 66 (8), pp 1889-1897, doi:10.1021/acs.jafc.7b04768
  • Coordination-Driven Self-Assembly of Heterotrimetallic Barrel and Bimetallic Cages Using a Cobalt Sandwich-Based Tetratopic Donor
    Singh N., Singh J., Kim D., Kim D.H., Kim E.-H., Lah M.S., Chi K.-W.,
    Inorganic Chemistry, 2018, 57 (7), pp 3521-3528, doi:10.1021/acs.inorgchem.7b02653
  • Determination of the Absolute Configuration of Polyhydroxy Compound Ostreol B Isolated from the Dinoflagellate Ostreopsis cf. ovata
    Hwang B.S., Yoon E.Y., Jeong E.J., Park J., Kim E.-H., Rho J.-R.,
    Journal of Organic Chemistry, 2018, 83 (1), pp 194-202, doi:10.1021/acs.joc.7b02569
  • Evidence of link between quorum sensing and sugar metabolism in Escherichia coli revealed via cocrystal structures of LsrK and HPr
    Ha J.-H., Hauk P., Cho K., Eo Y., Ma X., Stephens K., Cha S., Jeong M., Suh J.-Y., Sintim H.O., Bentley W.E., Ryu K.-S.,
    Science Advances, 2018, 4 (6), eaar7063, doi:10.1126/sciadv.aar7063
  • Zinc-mediated Reversible Multimerization of Hsp31 Enhances the Activity of Holding Chaperone
    Kim J., Choi D., Cha S.-Y., Oh Y.-M., Hwang E., Park C., Ryu K.-S.,
    Journal of Molecular Biology, 2018, 430 (12), pp 1760-1772, doi:10.1016/j.jmb.2018.04.029
  • Investigation of cationicity and structure of pseudin-2 analogues for enhanced bacterial selectivity and anti-inflammatory activity
    Jeon D., Jeong M.-C., Jacob B., Bang J.K., Kim E.-H., Cheong C., Jung I.D., Park Y., Kim Y.,
    Scientific Reports, 2017, 7 (1), 1455, doi:10.1038/s41598-017-01474-0
  • Amphiphilic Peptide Nanorods Based on Oligo-Phenylalanine as a Biocompatible Drug Carrier
    Song S.J., Lee S., Ryu K.-S., Choi J.S.,
    Bioconjugate Chemistry, 2017, 28 (9), pp 2266-2276, doi:10.1021/acs.bioconjchem.7b00247
  • Metabolic phenotyping of various tea (Camellia sinensis L.) cultivars and understanding of their intrinsic metabolism
    Hyang-Gi Ji, Yeong-Ran Lee, Min-Seuk Lee, Kyeong Hwan Hwang, Eun-Hee Kim, Jun Seong Park, Young-Shick Hong
    Food Chemistry vol. 233, 321-330 (2017), doi: 10.1016/j.foodchem.2017.04.079