Science Score: 57.0%

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    Found 4 DOI reference(s) in README
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  • Host: GitHub
  • Owner: Leth13
  • Language: MATLAB
  • Default Branch: main
  • Size: 93.8 KB
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Created over 2 years ago · Last pushed over 2 years ago
Metadata Files
Readme Citation

README.md

Quorum-sensing simulation of the Sin system of Sinorhizobium meliloti

This project contains three algorythms to simulate on Matlab the quorum sensing Sin system in Sinorhizobium meliloti.

Model

There are a total of 23 reactions characterizing the model.

The transcription and translation reactions were simplified in one reaction with one rate, beta.

Reaction Rates

The reaction rates are in the parameters.txt file. They were extracted from the data of Bettenworth et al. or, when information was lacking, assumed identical to the simulation of the LuxR/LuxI quorum sensing system of Vibrio fisheri in Buceta et al.. If new literature comes out about the actual rates of the S. meliloti species, it's advised to update them.

Deterministic simulations

The deterministic simulation is based on a set of ODES resolved by the ODEset solver of Matlab.

It needs all 15 reactions rates and the starting number of all metabolite/genes, except DNAexpr, which is an internal variable.

myode_full.m is the wild-type model of the Sin QS system.

myode_expr.m simulates a mutant lacking the expr gene by setting the internal variable DNAexpr = 0.

Stochastic simulation

SSA_QS.m contains a single-cell gillespie style simulation of the Sin QS system.

It needs all 15 reactions rates and the starting number of all metabolite/genes. The internal variable V, extracted from Xiongfeng et al., accounts for the statistical effect of the volume of the cell on reactions of one order or more.

function [SINIplot, SINRplot, EXPRstarplot, EXPRplot, timeplot, meantime] = SSA_QS(y, parameters, numberofcells, numberofreactions)

Mutants can be simulated by changing the values of the reactions rates or the genes.

Confronting simulations

See the file exampleconfrontingsimulations.m.

Frequency of SinI expression

We used the peakfinder function to calculate the frequency of pulses of expression of SinI.

See examplestatanalysis_pulses.m.

Credit

Owner

  • Login: Leth13
  • Kind: user

Citation (CITATION.cff)

cff-version: 1.2.0
message: "If you use this software, please cite it as below."
authors:
- family-names: "Marini"
  given-names: "Sara"
  orcid: "https://orcid.org/0009-0006-4112-0449"
title: "QS_Sinsystem_S.meliloti"
version: 1.0.0
date-released: 2023-12-10
url: "https://github.com/Leth13/QS_Sinsystem_S.meliloti"

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