Structural biology aims to understand the chemistry, interactions and basic biological functions governed by the three-dimensional structure of macromolecules. Knowledge of the 3-D structure of a protein can provide enormous basic scientific insight into the function of that protein, facilitating elucidation of its biochemical function and its interactions with other proteins, RNA, DNA, or membranes in the cell. X-ray crystallography and cryo-EM are the most prolific techniques for the structural analysis of proteins and protein complexes. Using X-ray crystallography and cryo-EM, we can now realize to the high-resolution range, up to atomic or even electronic details, enabling a full coverage understanding of macromolecules and their interactions. Current Projects 1. Structural studies of magnetosome associated proteins. Magnetotactic bacteria are a phylogenetically and morphologically diverse group of microorganisms that share an ability to create magnetosomes, biomineral organelles that sense geomagnetic fields and aid the bacteria to align themselves accordingly. The magnetosome organelle comprises aligned 30-50 nm iron oxide magnetite crystals, surrounded by a lipid bilayer membrane vesicle. There are several types of magnetosome-forming proteins all encoded by genes within a genomic island common to magnetotactic bacteria. These proteins include a set of incorporated membrane proteins that facilitate vesicle formation, vesicle localization and iron transport and a set of proteins that control magnetite formation and size. In my lab, we are tackling the structure-function relationships of these proteins. 2. Structural studies of cation diffusion facilitators (CDF), a special family of cation transporters. Cation diffusion facilitator (CDF) proteins constitute a group of heavy metal ion efflux transporters that participate in metal ion homeostasis and can be found in all domains of life. Members of the CDF protein family – functional in their dimeric form and comprising a transmembrane domain (TMD) and a cytoplasmic C-terminal domain (CTD) – exploi

Nonlinear optics, optical solitons, optical communications Dynamics of Bose-Einstein condensates and matter waves Nonlinear dynamical lattices Pattern formation in nonlinear dissipative media, Ginzburg-Landau equations Dynamics of long Josephson junct

Mathematics；Mathematical physics

Number Theory and Algebraic Geometry, more specifically themes related to arithmetic groups

Collision theory, quantum mechanical scattering, light scattering, nonlinear optics, electro-optics and quantum-optics, laser physics, atomic and molecular physics, chemical dynamics, dissociation of molecules, charge exchange processes, electron transpor

Organic Chemistry , Functions・Properties・Materials, Separation Refining and Identification

biology; biochemistry; structural ; electron microscopy

The conformations of ABC exporters in a lipid environment ABC exporters are molecular machines which use the energy of the cell to pump diverse chemicals across membranes. They participate in numerous biological processes, such as cell detoxification,

Hopf algebras and quantum groups and their applications to physics. Non-commutative ring theory.

We study the theory of ultracold quantum gases of bosons, fermions, and their mixtures. The current focus is on quantum, many-body dynamical effects in four paradigmatic systems: (a) Bosonic Josephson junctions and double-well atom interferometers (b) Ato

I will explain what fusion rules and supergroups are, why one might be interested in them from a physics point of view and what is known about them.

Dr. Heidersdorf studied Mathematics and Physics in Heidelberg and Orsay. He received his Ph.D. from Heidelberg in 2013. Subsequently, he was a Ross Assistant Professor at the Ohio State University, a researcher at the Max Planck Institute for Mathematics, and is currently a Postdoctoral Fellow at the University of Bonn.

Modern science is a Babel tower, the foundations of which are too often forgotten. Yet revolutions may occur when one takes seriously an essential question: ``Is it necessarily so?" Indeed a successful model is based on assumptions that are sufficient to explain existing data, but may not be necessary. That is the mathematical curse of experimental sciences, since one tends not to argue with success (or with what one has been taught) unless one is forced to. In 1960 Wigner (who in 1963 got the Nobel Prize in physics for ``the discovery and applications of fundamental symmetry principles") marvelled about ``the unreasonable effectiveness of mathematics in the natural sciences," referring mainly to physics. We shall briefly exemplify all this by first explaining how a posteriori relativity and quantum mechanics can be obtained from previously known theories using the mathematical theory of deformations, and by describing some main features of the (successful but probably incomplete) standard model of elementary particles, which arose from empirically guessed symmetries. Finally we indicate how, questioning its foundations, its symmetries could be obtained from those of relativity using deformations (including quantization), which poses hard mathematical problems and may eventually question more than half a century of particle physics. Complementing that approach by using the ``strings framework" is optional.

Lyon University, June 1958: Licencié ès-Sciences Mathématiques" (B.Sc.). Jerusalem (Hebrew University), July 1961: Master of Sciences. Paris University, 19 April 1968: Doctorat ès-Sciences Mathématiques" (D.Sc.) France, 1961 - 2003, Researcher (various levels and affiliations) with Centre National de la Recherche Scientifique. 2003 - present: Chercheur associé, Institut de Mathématiques de Bourgogne, and 2004 - 2010, Visiting Professor of mathematics at Keio University (Japan). 2010 - present: Visiting Research Fellow in mathematics, Rikkyo University, Tokyo. May 2002 -- present. Member of the Board of Governors, Ben Gurion University of the Negev (Israel). March 2004: Honorary Professor, Faculty of Physics, St.Petersburg State University, Russia.} Editor of Letters in Mathematical Physics (since 1999) and in a few other journals. Author or co-author of over 90 scientific publications (including two, on deformation quantization, with around 1000 citations and counting).

Boris Tsukerblat, Ph.D.(Kazan, USSR,1967), Dr. of Sciences in Theoretical and Mathematical Physics, Tartu, Estonia (1975), Corr. Member of the Academy of Sciences of Moldova (from 10094), Academy of Sciences of Moldova, Institute of Chemistry, Institute of Physics (1965-2002). Ben-Gurion University of the Negev, Department of Chemistry (from 2002). Invited Prof.: Univ. Valencia-1993-94, 1996-97, 2003-04, 2017-18; P.M. Curie Univ. 1997-98; Univ. Florence-1992-94. The main topics of research: molecular magnetism, symmetry in chemical applications, vibronic interactions and Jahn-Teller effect in molecules and crystals, spectroscopy of metal complexes and impurity centers in doped crystals. Author or co-author of over 400 scientific publications including four books (citations: 6670 , h=38-Google Scholar).

Molecular magnetism and molecule-based magnetic materials: exchange interactions, double exchange and mixed valence in metal clusters; molecular quantum cellular automata. Cooperative phenomena in molecule based magnets: charge and structural ordering in

In construction of the conformal invariant Lagrangian we restrict ourselves to the so-called Quadratic Gravity. Then, in the Riemannian geometry there exist only one suitable combination, namely, the square of the Weyl tensor (completely traceless part of the curvature tensor). The corresponding left-hand side of the field equations, the Bach tensor, is linear in the Weyl tensor itself and its second covariant derivatives. But, for any homogeneous and isotropic cosmological space-time (i.e., Robertson-Walker metric with arbitrary scale factor) the Weyl tensor is identically aero. Thus, any cosmological metric is the vacuum solution of the Weyl gravity in the framework of the Riemannian geometry – no matter at all! In 1919 Hermann Weyl invented a new geometry, which is now called the Weyl geometry. He introduced some 1-form and incorporated it into the connections by demanding that the new covariant derivative of the metric tensor coefficient equals this 1-form times that very coefficient. Then, he showed that in order these new connections to be conformal invariant, the 1-form must behave under the conformal transformation of the metric as the gauge field. It was the great discovery! How about the cosmology in the Weyl geometry? We started with construction the Lagrangian for the single particle moving in the given gravitational field in the Weyl geometry and discovered that there may exist some new interaction, absent in the Riemannian geometry (and, particularly, in General Relativity). This is due to the existence of the yet another invariant, namely, the contraction of the 1-form with the particle four-velocity vector. We called it “the invariant B”. And we were able to incorporate it into the Lagrangian for the perfect fluid. The cosmological principle requires that the Weyl 1-form should have only one (temporal) non-vanishing component depending only on the time coordinate. Hence, it can be removed by a suitable conformal transformation (also depending only on time). In such a gauge all possible functions of our new invariant B are converted into the se

Victor Berezin, PhD, Doctor of Sciences in Theoretical Physics. Senior Scientist in the Theoretical Physics Department of the Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russia (since 2nd of April, 1973). Relativist, the main works are dedicated to the theory of thin shells and double layers in General Relativity and its modifications - Quadratic Gravity and Weyl Geometry, and applications to the cosmological phase transitions, gravitational collapse (both classical and quantum). The author of more than 100 scientific papers and 4 monographies. One of the organizers of the series of the international "Quantum Gravity" seminars (1978 - 1995) and the editors of the corresponding Proceedings.

General Relativity and Gravitation; Black Hole Physics and Cosmology; Thin shells and double layers, theory and applications (classical and quantum);

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