Results 51 to 60 of about 1,402,532 (353)

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Formation and Magnetic Properties of Transition Metal Atomic Chains on Monolayer MoS₂ Grain Boundaries: A First-Principles Study

Nanomaterials
Magnetic one-dimensional nanostructures show great potential in spintronics and can be used as basic building blocks for magnetic materials and devices with multiple functions. In this study, transition group atomic chains (V, Cr, Mn, Fe, Co, and Ni) are
Zhiyuan Li, Shuqing Yang, Yiren Wang
doaj   +1 more source

Monoclinic and Correlated Metal Phase in VO_2 as Evidence of the Mott Transition: Coherent Phonon Analysis

, 2006
In femtosecond pump-probe measurements, the appearance of coherent phonon oscillations at 4.5 THz and 6.0 THz indicating the rutile metal phase of VO_2 does not occur simultaneously with the first-order metal-insulator transition (MIT) near 68^oC.
Bong-Jun Kim, Byung-Gyu Chae, H. T. Kim, Hyun-Tak Kim, Kang-Jeon Han, Ki-Ju Yee, Kwang-Yong Kang, N. F. Mott, Sun Jin Yun, T. Dekorsy, Yong Wook Lee, Yong-Sik Lim   +11 more
core   +1 more source

Metal-Insulator Transition and Lattice Instability of Paramagnetic V2O3 [PDF]

, 2015
We determine the electronic structure and phase stability of paramagnetic V$_2$O$_3$ at the Mott-Hubbard metal-insulator phase transition, by employing a combination of an ab initio method for calculating band structures with dynamical mean-field theory.
Anisimov, V. I., Leonov, I., Vollhardt, D.   +2 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

True Superconductivity in a 2D "Superconducting-Insulating" System

, 2000
We present results on disordered amorphous films which are expected to undergo a field-tuned Superconductor-Insulator Transition. Based on low-field data and I-V characteristics, we find evidence of a low temperature Metal-to-Superconductor transition ...
A. Goldman, A. Kapitulnik, A. Yazdani, A.F. Hebard, Aharon Kapitulnik, B. L. Altshuler, B. Spivak, C.D. Chen, D. Das, D. Ephron, D. H. Lee, D. Shahar, D. Stauffer, Denis Dalidovich, E. Abrahams, E. Abrahams, E. Shimshoni, H.S.J. van der Zant, J. T. Chalker, J.A. Chervenak, J.B. Kortright, J.M. Graybeal, J.S. Urbach, K. Kim, K.B. Cooper, M. Feigel’man, M.C. Hellerqvist, M.P.A. Fisher, M.P.A. Fisher, M.V. Feigel’man, N. Markovic, N. Mason, Nadya Mason, S. Kivelson, S.L. Sondhi   +34 more
core   +1 more source

Electric Field Induced Collapse of Charge-Ordered Phase in Manganites [PDF]

, 2006
The colossal electroresistance in manganites is a concomitant of the electric field induced insulator-to-metal phase transition. A phenomenological phase transition model is proposed to study this electric field induced collapse of charge-ordered phase ...
Dong, S., Liu, J. -M., Wang, K. F., Wang, Y., Yuan, F., Zhu, C.   +5 more
core   +1 more source

Oligocyclopentadienyl Transition Metal Complexes [PDF]

Synlett, 2002
Synthesis, characterization, and reactivity studies of oligocyclopentadienyl transition metal complexes, namely those of fulvalene, tercyclopentadienyl, quatercyclopentadienyl, and pentacyclopentadienyl(cyclopentadienyl) are the subject of this account. Thermal-, photo-, and redox chemistries of homo- and heteropolynuclear complexes are described.
de Azevedo, Cristina G., Vollhardt, K. Peter C.   +1 more
openaire   +2 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

A mini-review of noble-metal-free electrocatalysts for overall water splitting in non-alkaline electrolytes

Materials Reports: Energy, 2021
Development of noble-metal-free materials with remarkable electrocatalytic water-splitting performance in acidic or neutral media has sparked considerable attention in recent years.
Jie Yu, Yawen Dai, Qijiao He, Dongqi Zhao, Zongping Shao, Meng Ni   +5 more
doaj   +1 more source