Serine proteases catalyze a multi-step covalent catalytic mechanism of peptide bond cleavage. It has long been assumed that serine proteases including thrombin carry-out catalysis without significant conformational rearrangement of their stable two-?-barrel structure. We present nuclear magnetic resonance (NMR) and hydrogen deuterium exchange mass spectrometry (HDX-MS) experiments on the thrombin-thrombomodulin (TM) complex. Thrombin promotes procoagulative fibrinogen cleavage when fibrinogen...
[NMR paper] Probing contacts of inhibitor locked in transition states in the catalytic triad of DENV2 type serine protease and its mutants by 1H, 19F and 15 N NMR spectroscopy.
Probing contacts of inhibitor locked in transition states in the catalytic triad of DENV2 type serine protease and its mutants by 1H, 19F and 15 N NMR spectroscopy.
Related Articles Probing contacts of inhibitor locked in transition states in the catalytic triad of DENV2 type serine protease and its mutants by 1H, 19F and 15 N NMR spectroscopy.
BMC Mol Cell Biol. 2020 May 25;21(1):38
Authors: Agback P, Woestenenk E, Agback T
Abstract
BACKGROUND: Detailed structural knowledge of enzyme-inhibitor complexes trapped in intermediate...
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05-27-2020 02:44 PM
[NMR paper] Dynamics of Serine-8 Side-Chain in Amyloid-? Fibrils and Fluorenylmethyloxycarbonyl Serine Amino Acid, Investigated by Solid-State Deuteron NMR.
Dynamics of Serine-8 Side-Chain in Amyloid-? Fibrils and Fluorenylmethyloxycarbonyl Serine Amino Acid, Investigated by Solid-State Deuteron NMR.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-pubmed-acspubs.jpg Related Articles Dynamics of Serine-8 Side-Chain in Amyloid-? Fibrils and Fluorenylmethyloxycarbonyl Serine Amino Acid, Investigated by Solid-State Deuteron NMR.
J Phys Chem B. 2020 May 12;:
Authors: Vugmeyster L, Au DF, Ostrovsky D, Rickertsen DRL, Reed SM
Abstract
Serine...
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05-13-2020 09:14 PM
Exosite 2-Directed Ligands Attenuate ProteinC Activation by the Thrombin–Thrombomodulin Complex
Exosite 2-Directed Ligands Attenuate ProteinC Activation by the Thrombin–Thrombomodulin Complex
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bichaw/0/bichaw.ahead-of-print/acs.biochem.7b00250/20170607/images/medium/bi-2017-00250x_0009.gif
Biochemistry
DOI: 10.1021/acs.biochem.7b00250
http://feeds.feedburner.com/~ff/acs/bichaw?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/bichaw/~4/BaLp7wKW4HI
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06-08-2017 03:17 AM
Asymmetric Collapse in Biomimetic Complex Coacervates Revealed by Local Polymer and Water Dynamics
From The DNP-NMR Blog:
Asymmetric Collapse in Biomimetic Complex Coacervates Revealed by Local Polymer and Water Dynamics
Ortony, J.H., et al., Asymmetric collapse in biomimetic complex coacervates revealed by local polymer and water dynamics. Biomacromolecules, 2013. 14(5): p. 1395-402.
http://www.ncbi.nlm.nih.gov/pubmed/23540713
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01-17-2014 11:07 PM
Asymmetric Collapse in Biomimetic Complex Coacervates Revealed by Local Polymer and Water Dynamics
From The DNP-NMR Blog:
Asymmetric Collapse in Biomimetic Complex Coacervates Revealed by Local Polymer and Water Dynamics
Ortony, J.H., et al., Asymmetric Collapse in Biomimetic Complex Coacervates Revealed by Local Polymer and Water Dynamics. Biomacromolecules, 2013. 14(5): p. 1395-1402.
http://dx.doi.org/10.1021/bm4000579
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11-21-2013 01:14 AM
[NMR paper] NMR analysis of a novel enzymatically-active unlinked Dengue NS2B-NS3 protease complex.
NMR analysis of a novel enzymatically-active unlinked Dengue NS2B-NS3 protease complex.
Related Articles NMR analysis of a novel enzymatically-active unlinked Dengue NS2B-NS3 protease complex.
J Biol Chem. 2013 Mar 19;
Authors: Kim YM, Gayen S, Kang C, Joy J, Huang Q, Chen AS, Wee JL, Ang MJ, Lim HA, Hung AW, Li R, Noble CG, Lee LT, Yip A, Wang QY, Chia CS, Hill J, Shi PY, Keller TH
Abstract
The dengue virus (DENV) is a mosquito-borne pathogen responsible for an estimated 100 million human infections annually. The viral genome encodes a...
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03-21-2013 02:58 PM
Using the water signal to detect invisible exchanging protons in the catalytic triad of a serine protease
Using the water signal to detect invisible exchanging protons in the catalytic triad of a serine protease
Abstract Chemical Exchange Saturation Transfer (CEST) is an MRI approach that can indirectly detect exchange broadened protons that are invisible in traditional NMR spectra. We modified the CEST pulse sequence for use on high-resolution spectrometers and developed a quantitative approach for measuring exchange rates based upon CEST spectra. This new methodology was applied to the rapidly exchanging Hδ1 and Hε2 protons of His57 in the catalytic triad of bovine chymotrypsinogen-A...