Search Results - "Kamiya, Katsumasa"
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Structural and functional characterization of nylon hydrolases
Published in Methods in enzymology (2021)“…Biodegradation of synthetic polymers is recognized as a useful way to reduce their environmental load and pollution, loss of natural resources, extensive…”
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ON-OFF switching mechanism of resistive-random-access-memories based on the formation and disruption of oxygen vacancy conducting channels
Published in Applied physics letters (13-02-2012)“…We study the ON-OFF switching mechanism of oxide-based resistive-random-access-memories using theoretical calculations. Electron deficient vacancies (V O ) up…”
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3
A density functional study on the pKa of small polyprotic molecules
Published in International journal of quantum chemistry (05-09-2014)“…The pKa values of several biologically important small molecules in aqueous solution, such as salicylic acid, histamine, and dopamine, were determined by…”
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4
Charge-dependent oxygen vacancy diffusion in Al2O3-based resistive-random-access-memories
Published in Applied physics letters (26-08-2013)“…We theoretically study an oxygen vacancy (VO) diffusion in Al2O3-based resistive-random-access-memories (ReRAMs). We find that the activation energy of VO…”
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5
Identifying antibiotics based on structural differences in the conserved allostery from mitochondrial heme-copper oxidases
Published in Nature communications (08-12-2022)“…Antimicrobial resistance (AMR) is a global health problem. Despite the enormous efforts made in the last decade, threats from some species, including…”
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6
Imparting As(III) Responsiveness to the Choline Response Transcriptional Regulator BetI
Published in ACS omega (09-04-2024)“…The development of a low-cost and user-friendly sensor using microorganisms to monitor the presence of As(III) on earth has garnered significant attention. In…”
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Author Correction: Identifying antibiotics based on structural differences in the conserved allostery from mitochondrial heme-copper oxidases
Published in Nature communications (21-12-2022)Get full text
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8
Generalized mechanism of the resistance switching in binary-oxide-based resistive random-access memories
Published in Physical review. B, Condensed matter and materials physics (08-04-2013)“…We report that V sub(O) cohesion-isolation transition caused by carrier injection/removal is a generalized resistance switching mechanism of binary-oxide-based…”
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Intrinsic origin of negative fixed charge in wet oxidation for silicon carbide
Published in Applied physics letters (21-05-2012)“…We demonstrate on the basis of first-principles calculations that the formation of carbonate-like moiety in SiO 2 could be the intrinsic origin of negative…”
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Vacancy Cohesion-Isolation Phase Transition Upon Charge Injection and Removal in Binary Oxide-Based RRAM Filamentary-Type Switching
Published in IEEE transactions on electron devices (01-10-2013)“…We report on the electronic roles in filamentary-type switching of binary oxide-based resistive random access memories using ab initio calculations. We show…”
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Unraveling the degradation of artificial amide bonds in nylon oligomer hydrolase: from induced-fit to acylation processes
Published in Physical chemistry chemical physics : PCCP (01-01-2015)“…To elucidate how the nylon oligomer hydrolase (NylB) acquires its peculiar degradation activity towards non-biological amide bonds, we inspected the underlying…”
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A QM/MM study of nitric oxide reductase-catalysed N2O formation
Published in Molecular physics (16-02-2014)“…Nitrous oxide (N 2 O), with a greenhouse effect 300 times that of CO 2 , is increasingly eliminated into the atmosphere. Using a hybrid quantum…”
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13
Possible Mechanism of Proton Transfer through Peptide Groups in the H-Pathway of the Bovine Cytochrome c Oxidase
Published in Journal of the American Chemical Society (08-08-2007)“…The peptide group connecting Tyr440 and Ser441 of the bovine cytochrome c oxidase is involved in a recently proposed proton-transfer path (H-path) where, at…”
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14
Energetics and Electronic Structures of Alkanes Adsorbed on Carbon Nanotubes
Published in Japanese Journal of Applied Physics (01-04-2013)“…We report on total-energy electronic-structure calculations based on the density functional theory performed on linear alkanes [C n H 2n+2 with $n = 1$ to 8]…”
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15
Energetics and Electronic Structures of Alkanes and Polyethylene Adsorbed on Graphene
Published in Japanese Journal of Applied Physics (01-06-2013)“…We report on total-energy electronic-structure calculations performed for linear alkanes [C n H 2n+2 with $n=1$ to 8] and polyethylene of infinite length, both…”
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Mutations affecting the internal equilibrium of the reaction catalyzed by 6‐aminohexanoate‐dimer hydrolase
Published in FEBS letters (01-09-2016)“…The enzyme 6‐aminohexanoate‐dimer hydrolase catalyzes amide synthesis. The yield of this reverse reaction in 90% t‐butyl alcohol was found to vary drastically…”
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Spatially restricted substrate-binding site of cortisol-synthesizing CYP11B1 limits multiple hydroxylations and hinders aldosterone synthesis
Published in Current research in structural biology (01-01-2021)“…Human cytochromes P45011β (CYP11B1) and P450aldo (CYP11B2) are monooxygenases that synthesize cortisol through steroid 11β-hydroxylation and aldosterone…”
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18
Theoretical study of Si-based ionic switch
Published in Applied physics letters (14-05-2012)“…We studied the formation/dissolution of a silver (Ag) filament in a silicon (Si) layer through the first-principles calculations. We found these processes take…”
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Interstitial oxygen induced Fermi level pinning in the Al2O3-based high-k MISFET with heavy-doped n-type poly-Si gates
Published in AIP advances (01-10-2013)“…We study the origin of substantial threshold voltage (Vth) shifts observed in Al2O3-based MISFETs with n+poly-Si gate, by focusing on the effect of an…”
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Geometries and Electronic Structures of Diamond Nanoparticles
Published in Japanese Journal of Applied Physics (01-01-2012)Get full text
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