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Molecular stochastic simulations of chromatophore vesicles from Rhodobacter sphaeroides

Paper ID Volume ID Publish Year Pages File Format Full-Text
25462 43575 2007 17 PDF Available
Title
Molecular stochastic simulations of chromatophore vesicles from Rhodobacter sphaeroides
Abstract

A kinetic model is presented for photosynthetic processes under varying illumination based on the recently introduced steady state model of the photosynthetic chromatophore vesicles of the purple bacterium Rhodobacter sphaeroides. A stochastic simulation system is built up from independent copies of the different transmembrane proteins, each encapsulating its own set of binding sites and internal states. The proteins are then connected through pools for each of the metabolites.A number of steady state and time-dependent scenarios are presented showing that even under steady state conditions the stochastic model exhibits a different behavior than a continuous description. We find that the electronic coupling between the light harvesting complexes increases the efficiency of the core complexes which eventually allows the bacteria to bridge short illumination outages at already lower light intensities. Some new experiments are proposed by which the ΔpH dependent characteristic of the bc1 complex or the proton buffering capacity of the vesicle could be determined.

Keywords
Systems biology; Rhodobacter sphaeroides; Chromatophore vesicle; Stochastic simulation
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Molecular stochastic simulations of chromatophore vesicles from Rhodobacter sphaeroides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 129, Issue 2, 30 April 2007, Pages 212–228
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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