Results 41 to 50 of about 288,566 (269)
How Cobalt and Iron Doping Determine the Oxygen Evolution Electrocatalytic Activity of NiOOH
Cell Reports Physical Science, 2020 Summary: The 3d transition metals have been investigated as active centers in NiOOH to catalyze oxygen evolution reaction (OER); however, questions about the mechanism remain.
Yuhai Dou +13 more
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 +5 more
wiley +1 more source
NanomaterialsMagnetic 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
Intense green luminescence in Mn-doped gallogermanate nanostructured glass
Materials Research Express, 2022 Mn-activated optical materials have been demonstrated to be promising for various applications such as light-emitting device, tunable lasers and smart sensors.
Xiaoyun Xu, Yingying Xing, Ziyue Yang
doaj +1 more source
pH‐mediated activation of the lysosomal arginine sensor SLC38A9
FEBS Letters, EarlyView.Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley +1 more source
FEBS Letters, EarlyView.An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley +1 more source
FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley +1 more source
Transitional Phenomenon in Metal Cutting
Bulletin of JSME, 1960 Abstract To analyze the metal cutting mechanism in the transitional cutting stage after first contact between the cutting tool and the work material, the theory of pseudo-steady plastic flow was applied. Determining the relation between friction angle on tool face and cutting time by cutting test, the change of cutting mechanism during the transitional
OKUSHIMA, Keiji, HITOMI, Katsundo
openaire +3 more sources
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source
The charge percolation mechanism and simulation of Ziegler-Natta polymerizations. Part III. Oxidation states of transition metals [PDF]
Journal of the Serbian Chemical Society, 2006 The oxidation state of the transition metal (Mt) active centre is the most disputable question in the polymerization of olefins by Ziegler-Natta (ZN) and metallocene complexes.
Pilić Branka +5 more
doaj +1 more source