Results 41 to 50 of about 737,390 (249)

Magnetic interactions in transition metal doped ZnO : An abinitio study

, 2006
We calculate the nature of magnetic interactions in transition-metal doped ZnO using the local spin density approximation and LSDA+\textit{U} method of density functional theory.
A. Onodera, D. Norton, G. Sawatsky, J. Kanamori, J. Kim, Nicola A. Spaldin, Priya Gopal, S. Hüfner, V. E. Wood, Y. W. Heo   +9 more
core   +1 more source

Metal Ion availability in mitochondria [PDF]

BioMetals, 2007
Transition metal ions are required for many aspects of mitochondrial physiology. Copper, iron, manganese and zinc are cofactors in metalloenzymes and metalloproteins within the organelle. Little is known how cells maintain optimal pools of these metal ions for mitochondrial function. This review documents the available literature on mitochondrial metal
Pierrel, Fabien, Cobine, Paul A, Winge, Dennis R   +2 more
openaire   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Experimental study on the recovery of nitrogen and phosphorus from electroplating wastewater by struvite crystallization method

Gongye shui chuli
The nitrogen and phosphorus in electroplating wastewater were recovered using struvite crystallization method. The effects of pH, concentration of heavy metal ions and mass concentration of fluoride ions on the removal of nitrogen and phosphorus in ...
SUN Cairui, OUYANG Zhu, CAO Lu, HU Ying, HUANG Haiming, WANG Bingqian, LONG Kehua, TAO Leyao   +7 more
doaj   +1 more source

Effect Of Zinc Cations On The Kinetics Of Supramolecular Assembly And The Chirality Of Porphyrin J-Aggregates [PDF]

, 2017
Dilute aqueous solutions of anionic meso-4-sulfonatophenyl-porphyrin (TPPS) extract zinc(ii) ions from glass or quartz surfaces at room temperature and efficiently form the corresponding metal complex (ZnTPPS). The partial or complete formation of ZnTPPS
Castriciano, M. A., Monsù Scolaro, L, Pasternack, Robert F., Pollicino, G., Romeo, A., Zagami, R.   +5 more
core   +3 more sources

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

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

Role of Water Molecules to the Electronic States of M-DNA

Crystals, 2015
Various kinds of roles of the water molecules in the electronic states of the complexes of metal ions (M) and deoxyribonucleic acid (DNA) are reviewed. Divalent metal ions M like Fe, Mn, Zn and so on, form Metal-DNA complexes (M-DNA) with each metal ion ...
Kenji Mizoguchi, Hirokazu Sakamoto
doaj   +1 more source

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

Removal of Heavy Metal Ions Using the Fungus

Adsorption Science & Technology, 2003
The potential use of the fungus Penicillium canescens for the removal of cadmium, lead, mercury and arsenic ions from aqueous solutions was evaluated in this study. Equilibrium biosorption of the heavy metal ions was attained in 4 h. The binding of heavy
Ridvan Say, Nalan Yilmaz, Adil Denizli
doaj   +1 more source