scholarly journals The role of backward reactions in a stochastic model of catalytic reaction networks

2013 ◽  
Author(s):  
Alessandro Filisetti ◽  
◽  
Alex Graudenzi ◽  
Chiara Damiani ◽  
Marco Villani ◽  
...  
Keyword(s):  
Stochastic Model ◽  
Catalytic Reaction ◽  
Reaction Networks

scholarly journals A stochastic model of catalytic reaction networks in protocells

2014 ◽  
Vol 13 (3) ◽  
pp. 367-377 ◽  
Author(s):  
Roberto Serra ◽  
Alessandro Filisetti ◽  
Marco Villani ◽  
Alex Graudenzi ◽  
Chiara Damiani ◽  
...  
Keyword(s):  
Stochastic Model ◽  
Catalytic Reaction ◽  
Reaction Networks

scholarly journals A model of protocell based on the introduction of a semi-permeable membrane in a stochastic model of catalytic reaction networks

2013 ◽  
Vol 130 ◽  
pp. 70-73
Author(s):  
Roberto Serra ◽  
Alessandro Filisetti ◽  
Alex Graudenzi ◽  
Chiara Damiani ◽  
Marco Villani
Keyword(s):  
Stochastic Model ◽  
Catalytic Reaction ◽  
Reaction Networks ◽  
Permeable Membrane

scholarly journals Role of redox-inactive metals in controlling the redox potential of heterometallic manganese–oxido clusters

2021 ◽  
Author(s):  
Keisuke Saito ◽  
Minesato Nakagawa ◽  
Manoj Mandal ◽  
Hiroshi Ishikita
Keyword(s):  
Photosystem Ii ◽  
Redox Potential ◽  
Quantum Chemical Calculations ◽  
Catalytic Reaction ◽  
Quantum Chemical ◽  
Ionic Radius ◽  
Redox Potentials ◽  
Oxygen Evolving ◽  
Highest Occupied Molecular Orbitals

AbstractPhotosystem II (PSII) contains Ca2+, which is essential to the oxygen-evolving activity of the catalytic Mn4CaO5 complex. Replacement of Ca2+ with other redox-inactive metals results in a loss/decrease of oxygen-evolving activity. To investigate the role of Ca2+ in this catalytic reaction, we investigate artificial Mn3[M]O2 clusters redox-inactive metals  [M] ([M]  = Mg2+, Ca2+, Zn2+, Sr2+, and Y3+), which were synthesized by Tsui et al. (Nat Chem 5:293, 2013). The experimentally measured redox potentials (Em) of these clusters are best described by the energy of their highest occupied molecular orbitals. Quantum chemical calculations showed that the valence of metals predominantly affects Em(MnIII/IV), whereas the ionic radius of metals affects Em(MnIII/IV) only slightly.

scholarly journals Instability of CII is needed for efficient switching between lytic and lysogenic development in bacteriophage 186

2020 ◽  
Vol 48 (21) ◽  
pp. 12030-12041
Author(s):  
Iain M Murchland ◽  
Alexandra Ahlgren-Berg ◽  
Julian M J Pietsch ◽  
Alejandra Isabel ◽  
Ian B Dodd ◽  
...  
Keyword(s):  
Stochastic Model ◽  
Transcriptional Activator ◽  
Uv Treatment ◽  
Prophage Induction ◽  
In Vivo Degradation

Abstract The CII protein of temperate coliphage 186, like the unrelated CII protein of phage λ, is a transcriptional activator that primes expression of the CI immunity repressor and is critical for efficient establishment of lysogeny. 186-CII is also highly unstable, and we show that in vivo degradation is mediated by both FtsH and RseP. We investigated the role of CII instability by constructing a 186 phage encoding a protease resistant CII. The stabilised-CII phage was defective in the lysis-lysogeny decision: choosing lysogeny with close to 100% frequency after infection, and forming prophages that were defective in entering lytic development after UV treatment. While lysogenic CI concentration was unaffected by CII stabilisation, lysogenic transcription and CI expression was elevated after UV. A stochastic model of the 186 network after infection indicated that an unstable CII allowed a rapid increase in CI expression without a large overshoot of the lysogenic level, suggesting that instability enables a decisive commitment to lysogeny with a rapid attainment of sensitivity to prophage induction.

An algorithm for evaluating reaction rates of catalytic reaction networks with strong diffusion limitations

2001 ◽  
Vol 25 (9-10) ◽  
pp. 1185-1198 ◽  
Author(s):  
Sergio P. Bressa ◽  
Néstor J. Mariani ◽  
Néstor O. Ardiaca ◽  
Germán D. Mazza ◽  
Osvaldo M. Martı́nez ◽  
...  
Keyword(s):  
Catalytic Reaction ◽  
Reaction Rates ◽  
Reaction Networks ◽  
Diffusion Limitations ◽  
Strong Diffusion

On the Role of Different Adsorption and Reaction Sites on Supported Nanoparticles during a Catalytic Reaction:  NO Decomposition on a Pd/Alumina Model Catalyst†

2004 ◽  
Vol 108 (38) ◽  
pp. 14244-14254 ◽  
Author(s):  
V. Johánek ◽  
S. Schauermann ◽  
M. Laurin ◽  
Chinnakonda S. Gopinath ◽  
J. Libuda ◽  
...  
Keyword(s):  
Catalytic Reaction ◽  
Model Catalyst ◽  
No Decomposition ◽  
Supported Nanoparticles

scholarly journals A stochastic model of autocatalytic reaction networks

2011 ◽  
Vol 131 (2) ◽  
pp. 85-93 ◽  
Author(s):  
Alessandro Filisetti ◽  
Alex Graudenzi ◽  
Roberto Serra ◽  
Marco Villani ◽  
Rudolf M. Füchslin ◽  
...  
Keyword(s):  
Stochastic Model ◽  
Autocatalytic Reaction ◽  
Reaction Networks

MODELLING THE ROLE OF IMMUNITY IN MACROPARASITE INFECTIONS

1995 ◽  
Vol 03 (02) ◽  
pp. 379-387 ◽  
Author(s):  
MO YANG HYUN ◽  
FRANCISCO ANTONIO BEZERRA COUTINHO ◽  
EDUARDO MASSAD
Keyword(s):  
Stochastic Model

A stochastic model is proposed to analyse the role of immunity processes in modulating the infection by macroparasites, with applications in schistosomiasis.

Sign in / Sign up

Export Citation Format

Share Document