Difference between revisions of "Degradation of C2-R2"

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(Parameters)
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== Parameters ==
 
== Parameters ==
  
The parameter of this reaction is the degradation rate of C<sub>2</sub>R<sub>2</sub> (<math>d_{CR}</math>).
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The parameter of this reaction is the degradation rate of C<sub>2</sub>R<sub>2</sub> (<math>d_{CR}</math>). The parameter values were derived from proteomics studies on different proteins of ''S. coelicolor''.
  
{|class="wikitable"
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{|class="wikitable"  
 
! Name
 
! Name
 
! Value
 
! Value
 
! Units
 
! Units
! Origin
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! Value in previous GBL models <ref name="Mehra2008"> [http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0002724&representation=PDF S. Mehra, S. Charaniya, E. Takano, and W.-S. Hu. ''A bistable gene switch for antibiotic biosynthesis: The butyrolactone regulon in streptomyces coelicolor.'' PLoS ONE, 3(7), 2008.] </ref> <ref name="Chatterjee2011"> [http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0021974&representation=PDF A. Chatterjee, L. Drews, S. Mehra, E. Takano, Y.N. Kaznessis, and W.-S. Hu. ''Convergent transcription in the butyrolactone regulon in streptomyces coelicolor confers a bistable genetic switch for antibiotic biosynthesis.'' PLoS ONE, 6(7), 2011.] </ref>
! Remarks
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! Remarks-Reference
 
|-
 
|-
 
|<math>d_{CR}</math>
 
|<math>d_{CR}</math>
|<math>0.000833-0.001667</math> <ref name="Trötschel2013"> Trötschel C, Albaum SP, Poetsch A. ''Proteome turnover in bacteria: current status for Corynebacterium glutamicum and related bacteria.'' Microbial biotechnology. 2013;6(6):708-719.</ref>  
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|<math>8.3 \cdot 10^{-4}-0.0037 min^{-1}</math> <ref name="Trötschel2013"> [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3815937/pdf/mbt0006-0708.pdf Trötschel C, Albaum SP, Poetsch A. ''Proteome turnover in bacteria: current status for Corynebacterium glutamicum and related bacteria.'' Microbial biotechnology. 2013;6(6):708-719.]</ref> <ref name="Jayapal2010"> [http://pubs.acs.org/doi/pdf/10.1021/pr9007738 Jayapal KP, Sui S, Philp RJ, Kok YJ, Yap MG, Griffin TJ, Hu WS. ''Multitagging proteomic strategy to estimate protein turnover rates in dynamic systems.'' J Proteome Res. 2010 May 7;9(5):2087-97.]</ref>
| <math>min^{-1}</math>
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|<math> min^{-1} </math>  
| Degradation rates of proteins in ''S. coelicolor''  
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|<math>0.062 s^{-1}</math><ref name="Mehra2008"></ref>
based on radioactive decay
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<math>0.0031 s^{-1}</math><ref name="Chatterjee2011"></ref>
|
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(Range tested: <math>10^{-7}-10^{-1} s^{-1}</math>)
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(Bistability range: <math>0.061-0.17 s^{-1}</math><ref name="Mehra2008"></ref>
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and <math>0.0031-0.068 s^{-1}</math><ref name="Chatterjee2011"></ref>)
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|In a quantitative proteomics study on protein turnover rates in dynamic systems,  Jayapal et al. reported the degradation rates of 115 proteins in ''S. coelicolor'' cultures undergoing transition from exponential growth to stationary phase. The values were in the range <math>0.05-0.22 h^{-1} (8.3 \cdot 10^{-4}-0.0037 min^{-1}) </math> with a median of <math>0.097 h^{-1} (0.00162 min^{-1})</math>.
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[[Image:DR-text.png|center|thumb|350px|Jayapal et al. 2012<ref name="Jayapal2010"></ref>]]
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The full list of the proteins studied and their turnover rate constants can be found [http://kirschner.med.harvard.edu/files/bionumbers/List%20of%20Proteins%20Examined%20and%20Their%20Turnover%20Rate%20Constants.pdf here].
 
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Revision as of 19:32, 16 October 2015

The SCB-ScbR protein complex (C2R2) degrades.

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Chemical equation

C_{2}R_{2}\rightarrow \varnothing

Rate equation

 r= d_{CR}\cdot[C_{2}R_{2}]

Parameters

The parameter of this reaction is the degradation rate of C2R2 (d_{CR}). The parameter values were derived from proteomics studies on different proteins of S. coelicolor.

Name Value Units Value in previous GBL models [1] [2] Remarks-Reference
d_{CR} 8.3 \cdot 10^{-4}-0.0037 min^{-1} [3] [4]  min^{-1} 0.062 s^{-1}[1]

0.0031 s^{-1}[2]

(Range tested: 10^{-7}-10^{-1} s^{-1})

(Bistability range: 0.061-0.17 s^{-1}[1]

and 0.0031-0.068 s^{-1}[2])

In a quantitative proteomics study on protein turnover rates in dynamic systems, Jayapal et al. reported the degradation rates of 115 proteins in S. coelicolor cultures undergoing transition from exponential growth to stationary phase. The values were in the range 0.05-0.22 h^{-1} (8.3 \cdot 10^{-4}-0.0037 min^{-1}) with a median of 0.097 h^{-1} (0.00162 min^{-1}).
Jayapal et al. 2012[4]

The full list of the proteins studied and their turnover rate constants can be found here.

Parameters with uncertainty

The most plausible parameter value for the d_{CR} is decided to be  0.00118 min^{-1} and the confidence interval  1.41 . This means that the mode of the PDF is 0.00118 and the range where 95% of the values are found is between 0.8369\cdot 10^{-3} and 1.67 \cdot 10^{-3} min^{-1}.

The probability distribution for the parameter, adjusted accordingly in order to reflect the above values, is the following:

DCR.png

The location and scale parameters of the distribution are:

Parameter μ σ
d_{CR} -6.7120 0.174

References