• Русский
  • English

Conformational and Interaction Landscape of Histone H4 Tails in Nucleosomes Probed by Paramagnetic NMR Spectroscopy

Posted: 09.11.2023
Это изображение имеет пустой атрибут alt; его имя файла - ja3c10340_0003.gif
Here we investigate the conformational ensemble and interactions of the H4 tail in nucleosomes by means of solution NMR measurements of paramagnetic relaxation enhancements (PREs) in recombinant samples reconstituted with 15N-enriched H4 and nitroxide spin-label tagged H3.

Wenjun Sun, Olga O. Lebedenko, Nicole Gonzalez Salguero, Matthew D. Shannon, Mohamad Zandian, Michael G. Poirier, Nikolai R. Skrynnikov, and Christopher P. Jaroniec

https://pubs.acs.org/doi/full/10.1021/jacs.3c10340

Read more »

Tags: ,

Aromatic ring flips in differently packed ubiquitin protein crystals from MAS NMR and MD

Posted: 12.01.2023
Here we apply magic-angle spinning NMR, advanced phenylalanine 1H-13C/2H isotope labeling and MD simulation to a protein in three different crystal packing environments to shed light onto possible impact of packing on ring flips.

Diego F. Gauto, Olga O. Lebedenko, Lea Marie Becker, Isabel Ayala, Roman Lichtenecker, Nikolai R. Skrynnikov, Paul Schanda

https://www.sciencedirect.com/science/article/pii/S2590152422000204?via%3Dihub

Read more »

Tags: ,

Simulating diffraction photographs based on molecular dynamics trajectories of a protein crystal: a new option to examine structure-solving strategies in protein crystallography

Posted: 11.01.2023
In this work, we have simulated diffraction photographs based on MD simulations of a supercell comprised of 125 unit cells of tetragonal lysozyme. The calculations were conducted using the fundamental Huygens–Fresnel principle.

Ning Liu, Oleg Mikhailovskii, Nikolai R. Skrynnikovb, and Yi Xue

https://journals.iucr.org/m/issues/2023/01/00/lz5062/index.html

Read more »

Tags: , , ,

Effect of rotation in NMR diffusion experiments on micron-sized particles: A generalized theoretical treatment

Posted: 17.11.2022
A theory is developed to describe the effect of particle rotation in PFG NMR experiments. The rotation can produce 1.5-fold or even greater acceleration of apparent diffusion rates. Large macromolecular assemblies always diffuse much more slowly than their constituent monomers.

Ivan S.Podkorytov, Nikolai R.Skrynnikov

https://doi.org/10.1016/j.jmr.2022.107303

 

Read more »

Tags: ,

Annual conference of the Institute of Translational Biomedicine of St. Petersburg State University (ITBM SPbU) “Actual problems of translational biomedicine 2022”

Posted: 26.07.2022
Someone made a presentation, someone listened, and Boris flew a kite.

Boris B. Kharkov

https://events.spbu.ru/events/translational-biomedicine-2022

https://events.spbu.ru/eventsContent/events/2022/%D0%A1%D0%B1%D0%BE%D1%80%D0%BD%D0%B8%D0%BA%20%D1%82%D0%B5%D0%B7%D0%B8%D1%81%D0%BE%D0%B2%20%D0%BA%D0%BE%D0%BD%D1%84%20%D0%98%D0%A2%D0%91%D0%9C%202022.pdf

Read more »

Tags:

Amber22 is now available!

Posted: 27.04.2022
Version 22 of the Amber software suite represents a significant update from version 20.

D.A. Case, H.M. Aktulga, K. Belfon, I.Y. Ben-Shalom, J.T. Berryman, S.R. Brozell, D.S. Cerutti, T.E. Cheatham, III, G.A. Cisneros, V.W.D. Cruzeiro, T.A. Darden, R.E. Duke, G. Giambasu, M.K. Gilson, H. Gohlke, A.W. Goetz, R. Harris, S. Izadi, S.A. Izmailov, K. Kasavajhala, M.C. Kaymak, E. King, A. Kovalenko, T. Kurtzman, T.S. Lee, S. LeGrand, P. Li, C. Lin, J. Liu, T. Luchko, R. Luo, M. Machado, V. Man, M. Manathunga, K.M. Merz, Y. Miao, O. Mikhailovskii, G. Monard, H. Nguyen, K.A. O’Hearn, A. Onufriev, F. Pan, S. Pantano, R. Qi, A. Rahnamoun, D.R. Roe, A. Roitberg, C. Sagui, S. Schott-Verdugo, A. Shajan, J. Shen, C.L. Simmerling, N.R. Skrynnikov, J. Smith, J. Swails, R.C. Walker, J. Wang, J. Wang, H. Wei, R.M. Wolf, X. Wu, Y. Xiong, Y. Xue, D.M. York, S. Zhao, and P.A. Kollman

https://ambermd.org/doc12/Amber22.pdf

Read more »

Tags: , , ,

Weak nuclear spin singlet relaxation mechanisms revealed by experiment and computation

Posted: 23.03.2022
The ability of nuclear spin singlet order (SO) to exhibit lifetimes much longer than spin lattice relaxation times has motivated the investigation into the use of such states as information or polarization storage vehicles. Potential applications include imaging, the study of slow kinetic or dynamic processes, or the study of weak relaxation mechanisms.

B. Kharkov, X. Duan, J. Rantaharju, M. Sabba, M.H. Levitt, J.W. Canary, A. Jerschow

https://pubs.rsc.org/en/content/articlelanding/2022/cp/d1cp05537b

Read more »

Tags:

Modeling a unit cell: crystallographic refinement procedure using the biomolecular MD simulation platform Amber

Posted: 23.12.2021
Flowchart illustrating the functionalities and interactions of the new Amber module kXrayEnergy.

Oleg Mikhailovskii, Yi Xue, and Nikolai R. Skrynnikov.

https://doi.org/10.1107/S2052252521011891.

Read more »

Tags: ,

The Role of Rotational Motion in Diffusion NMR Experiments on Supramolecular Assemblies: Application to Sup35NM Fibrils

Posted: 23.04.2021

Dr. Boris B. Kharkov, Ivan S. Podkorytov, Dr. Stanislav A. Bondarev, Dr. Mikhail V. Belousov, Vladislav A. Salikov, Prof. Dr. Galina A. Zhouravleva, Prof. Dr. Nikolai R. Skrynnikov

https://doi.org/10.1002/anie.202102408

Read more »

Tags: , , ,

Histone H4 tails in nucleosomes: a fuzzy interaction with DNA

Posted: 24.02.2021

Sevastyan O. Rabdano, Matthew D. Shannon, Sergei A. Izmailov, Nicole Gonzalez Salguero, Mohamad Zandian, Rudra N. Purusottam, Michael G. Poirier, Nikolai R. Skrynnikov and Christopher P. Jaroniec

https://doi.org/10.1002/anie.202012046

Read more »

Tags: , ,

← Earlier