Team:ETH Zurich/Modeling/Parameters

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|style="font-size:2em; height: 30px" class="modeling"|Parameters
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= Modeling - Parameters =
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{|class="linkMap modelingTitle" align="right"
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'''Of course, our models do not work without parameters, and in our case, there are quite a lot of them. In order to keep track of all of their respective values and units, we gathered them in a series of tables on this page.'''
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{{:Team:ETH Zurich/Templates/SectionEnd}}
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|style="border-left: none;"|[[#Single-Cell Model|Single-Cell Model]]
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{{:Team:ETH Zurich/Templates/SectionStart}}
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|[[#Microfluidics Model|Microfluidics Model]]
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|[[#Combined Model|Combined Model]]
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= Single-Cell Model =
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|colspan="2"|'''Of course, our models do not work without parameters, and in our case, there are quite a lot of them. In order to keep track of all of their respective values and units, we gathered them in a series of tables on this page.'''
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{|class="roundContainer"
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== Single-Cell Model ==
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a. - assumption
a. - assumption
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{|style="margin: 1em auto 1em auto; " class="wikitable sortable"
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{|style="margin: 1em auto 1em auto; width: 80%;" class="wikitable sortable"
!Parameter
!Parameter
!Description
!Description
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|-
|-
|α<sub>TetR</sub>
|α<sub>TetR</sub>
-
|TetR production rate
+
|TetR max. production rate
-
|3.93 μM/min
+
|3.93 μM/min, updated to 1 μM/min
|[[Team:ETH_Zurich/Modeling/References#Ref5|[5]]]
|[[Team:ETH_Zurich/Modeling/References#Ref5|[5]]]
|-
|-
|α<sub>C</sub>
|α<sub>C</sub>
-
|CI production rate
+
|CI max. production rate
|1 μM/min
|1 μM/min
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|-
|-
|α<sub>L1</sub>
|α<sub>L1</sub>
-
|LacI production rate
+
|LacI max. production rate
|1 μM/min
|1 μM/min
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|-
|-
|α<sub>L2</sub>
|α<sub>L2</sub>
-
|LacI<sub>M1</sub> production rate
+
|LacI<sub>M1</sub> max. production rate
|1 μM/min
|1 μM/min
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|-
|-
|α<sub>G</sub>
|α<sub>G</sub>
-
|GFP production rate
+
|GFP max. production rate
|2 μM/min
|2 μM/min
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|-
|-
|α<sub>LuxI</sub>
|α<sub>LuxI</sub>
-
|LuxI production rate
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|LuxI max. production rate
|1 μM/min
|1 μM/min
-
|[[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
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|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
-
|-
+
-
|α<sub>LuxI</sub>
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-
|LuxI production rate
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-
|1 μM/min
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-
|[[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
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-
|-
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-
|α<sub>LuxI</sub>
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-
|LuxI production rate
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-
|1 μM/min
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-
|[[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
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|-
|-
|k<sub>s1</sub>
|k<sub>s1</sub>
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|ρ<sub>R</sub>
|ρ<sub>R</sub>
|LuxR-AHL dimerization rate
|LuxR-AHL dimerization rate
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|0.5 1/μM<sup>3</sup>min
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|0.5 1/(μM<sup>3</sup>*min)
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|[[Team:ETH_Zurich/Modeling/References#Ref1|[1]]]
|-
|-
|α<sub>RFP</sub>
|α<sub>RFP</sub>
-
|RFP production rate
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|RFP max. production rate
|1 μM/min
|1 μM/min
|a.
|a.
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|β<sub>T</sub>
|β<sub>T</sub>
|TetR repression coefficient
|TetR repression coefficient
-
|0.01 μM
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|0.01 μM, updated to 0.1 μM/min
|a.
|a.
|-
|-
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|1.352
|1.352
|[[Team:ETH_Zurich/Modeling/References#Ref5|[5]]]
|[[Team:ETH_Zurich/Modeling/References#Ref5|[5]]]
 +
|-
 +
|n<sub>7</sub>
 +
|XylR cooperativity coefficient
 +
|5
 +
|[[Team:ETH_Zurich/Modeling/References#Ref5|[6]]]
|-
|-
|η
|η
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|-
|-
|a<sub>XylR</sub>
|a<sub>XylR</sub>
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|XylR production rate
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|XylR max. production rate
-
|95.5 uM/min
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|95.5 μM/min
-
|[[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
+
|[[Team:ETH_Zurich/Modeling/References#Ref7|[6]]]
|-
|-
-
|n6
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|γ<sub>XylRi</sub>
-
|Xylene cooperativity coefficient
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|XylRi degradation rate
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|2
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-
|[[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
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-
|-
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-
|γ<sub>XylR</sub>
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-
|XylR degradation rate
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|0.03553 1/min
|0.03553 1/min
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|a.
+
|[[Team:ETH_Zurich/Modeling/References#Ref7|[6]]]
|-
|-
-
|K<sub>Xyl</sub>
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|γ<sub>XylRa</sub>
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|Xylene activation coefficient
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|XylRa degradation rate
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|40 uM
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|0.04527 1/min
-
|[[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
+
|[[Team:ETH_Zurich/Modeling/References#Ref7|[6]]]
|-
|-
|K<sub>XylR</sub>
|K<sub>XylR</sub>
|XylR activation coefficient
|XylR activation coefficient
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|1.419*10-3 uM
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|1.419*10-3 μM
|[[Team:ETH_Zurich/Modeling/References#Ref6|[6]]]
|[[Team:ETH_Zurich/Modeling/References#Ref6|[6]]]
|-
|-
-
|n7
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|r<sub>XylR</sub>
-
|XylR cooperativity coefficient
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|XylRi oligomerization constant
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|5
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|0.04315e-3 1/(μM*min)
 +
|[[Team:ETH_Zurich/Modeling/References#Ref6|[6]]]
 +
|-
 +
|r<sub>RXylR</sub>
 +
|XylRa dissociation constant
 +
|0.1301e-3 1/(μM*min)
|[[Team:ETH_Zurich/Modeling/References#Ref6|[6]]]
|[[Team:ETH_Zurich/Modeling/References#Ref6|[6]]]
|}
|}
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{{:Team:ETH Zurich/Templates/SectionEnd}}
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{|class="roundContainer"
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{{:Team:ETH Zurich/Templates/SectionStart}}
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|
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== Microfluidics Model ==
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= Diffusion Model =
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{|style="margin: 1em auto 1em auto; " class="wikitable sortable"
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{|style="margin: 1em auto 1em auto; width: 80%;" class="wikitable sortable"
!Parameter
!Parameter
!Description
!Description
!Value
!Value
!Reference
!Reference
 +
|-
 +
|z<sub>end</sub>
 +
|Microfluidics channel length
 +
|5 cm
 +
|[[Team:ETH_Zurich/Modeling/Microfluidics#Cell Density|Choice in diffusion model]]
 +
|-
 +
|R<sub>Channel</sub>
 +
|Microfluidics channel radius
 +
|1 mm
 +
|[[Team:ETH_Zurich/Modeling/Microfluidics#Cell Density|Choice in diffusion model]]
|-
|-
|V<sub>eColi</sub>
|V<sub>eColi</sub>
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|e. Coli average volume
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|''E. coli'' average volume
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|5 μm<sup>3</sup>
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|2 μm<sup>3</sup>
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|TODO
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|[[Team:ETH_Zurich/Modeling/References#Ref13|[13]]] [[Team:ETH_Zurich/Modeling/References#Ref14|[14]]]
|-
|-
|cd<sub>OD600, undiluted</sub>
|cd<sub>OD600, undiluted</sub>
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|e. Coli Cell Density at OD<sub>600</sub> = 1
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|''E. coli'' Cell Density at OD<sub>600</sub> = 1
-
|1e8 1/ml
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|1e9 1/ml
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|TODO
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|[[Team:ETH_Zurich/Modeling/References#Ref13|[13]]] [[Team:ETH_Zurich/Modeling/References#Ref16|[16]]]
|-
|-
|c<sub>Dilution</sub>
|c<sub>Dilution</sub>
|Dilution of cell culture in microfludics channel
|Dilution of cell culture in microfludics channel
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|0.01
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|1/8
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|TODO: Choice in Microfluidics Model
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|[[Team:ETH_Zurich/Modeling/Microfluidics#Cell Density|Choice in diffusion model]]
|-
|-
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|cdRel<sub>OD600, undiluted</sub>
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|style="white-space: nowrap;"|cdRel<sub>OD600, undiluted</sub>
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|Relative e. Coli Cell Density at OD<sub>600</sub> = 1, undiluted
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|Relative ''E. coli'' Cell Density at OD<sub>600</sub> = 1, undiluted
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|0.0125
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|0.001
-
|TODO: Derivation in Microfluidics Model
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|[[Team:ETH_Zurich/Modeling/Microfluidics#Cell Density|Derived from V<sub>eColi</sub>, cd<sub>OD600, undiluted</sub>]]
|-
|-
|cdRel<sub>OD600, diluted</sub>
|cdRel<sub>OD600, diluted</sub>
-
|Relative e. Coli Cell Density at OD<sub>600</sub> = 1, diluted
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|Relative ''E. coli'' Cell Density at OD<sub>600</sub> = 1, diluted
|0.000125
|0.000125
-
|TODO: Derivation in Microfluidics Model
+
|[[Team:ETH_Zurich/Modeling/Microfluidics#Cell Density|Derived from cdRel<sub>OD600, undiluted</sub>, c<sub>Dilution</sub>]]
 +
|-
 +
|C<sub>Agarose</sub>
 +
|Scaling coefficient for diffusion of small molecules in agarose instead of water
 +
|0.9
 +
|a.
|-
|-
|D<sub>AcAl</sub>
|D<sub>AcAl</sub>
|Acetaldehyde Diffusion Constant
|Acetaldehyde Diffusion Constant
|1.23e-5 cm<sup>2</sup>/s
|1.23e-5 cm<sup>2</sup>/s
-
|TODO
+
|[[Team:ETH_Zurich/Modeling/References#Ref8|[8]]]
|-
|-
|m<sub>AcAl</sub>
|m<sub>AcAl</sub>
|Acetaldehyde Molecular Weight
|Acetaldehyde Molecular Weight
|44.05316 u
|44.05316 u
-
|TODO
+
|[[Team:ETH_Zurich/Modeling/References#Ref8|[8]]]
 +
|-
 +
|K<sub>cat,AcAl</sub>
 +
|Specific enzyme activity of acetaldehyde dehydrogenase in ''E. coli''
 +
|14.1 μmol/(min*mg)
 +
|[[Team:ETH_Zurich/Modeling/References#Ref10|[10]]] [[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|-
 +
|[E]<sup>T</sup>
 +
|Mean acetaldehyde dehydrogenase enzyme concentration in ''E. coli''
 +
|1.6659 kg/m<sup>3</sup>
 +
|[[Team:ETH_Zurich/Modeling/Microfluidics#Estimation of vmax.2CAcAl|Estimation from cell extract]], [[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|-
 +
|v<sub>max,AcAl</sub>
 +
|Maximum reaction rate for acetaldehyde dehydrogenase degrading acetaldehyde
 +
|0.02349 M/min
 +
|[[Team:ETH_Zurich/Modeling/Microfluidics#Estimation of vmax.2CAcAl|Estimation from cell extract]], [[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|-
 +
|K<sub>M,AcAl</sub>
 +
|Michaelis-Menten constant for acetaldehyde dehydrogenase degrading acetaldehyde
 +
|10 μM
 +
|[[Team:ETH_Zurich/Modeling/References#Ref10|[10]]] [[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|-
 +
|m<sub>ADH</sub>
 +
|Molecular mass of acetaldehyde dehydrogenase
 +
|33442 u
 +
|[[Team:ETH_Zurich/Modeling/References#Ref12|[12]]]
 +
|-
 +
|n<sub>ADH</sub>
 +
|Mean number of acetaldehyde dehydrogenase protein molecules per ''E. coli'' cell
 +
|style="white-space: nowrap;"|28512.2, rounded to 30000
 +
|[[Team:ETH_Zurich/Modeling/Microfluidics#Estimation of vmax.2CAcAl|Estimation from cell extract]], [[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|-
 +
|[ADH]<sub>Extract</sub>
 +
|acetaldehyde dehydrogenase concentration in ''E. coli'' cell extract
 +
|19 mg/ml
 +
|[[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|-
 +
|dil<sub>Extract</sub>
 +
|''E. coli'' cell extract dilution
 +
|1/12
 +
|[[Team:ETH_Zurich/Modeling/References#Ref11|[11]]]
 +
|}
 +
 
 +
{{:Team:ETH Zurich/Templates/SectionEnd}}
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{{:Team:ETH Zurich/Templates/SectionStart}}
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= Combined Model =
 +
{|style="margin: 1em auto 1em auto; width: 80%;" class="wikitable sortable"
 +
!Parameter
 +
!Description
 +
!Value
 +
!Reference
|-
|-
|D<sub>AHL</sub>
|D<sub>AHL</sub>
|AHL Diffusion Constant
|AHL Diffusion Constant
|4.9e-6 cm<sup>2</sup>/s
|4.9e-6 cm<sup>2</sup>/s
-
|TODO
+
|[[Team:ETH_Zurich/Modeling/References#Ref9|[9]]]
|-
|-
|m<sub>AHL</sub>
|m<sub>AHL</sub>
|AHL Molecular Weight
|AHL Molecular Weight
-
|213.13 u
+
|297.38990 u
-
|TODO
+
|[[Team:ETH_Zurich/Modeling/References#Ref15|[15]]]
-
|}
+
|-
-
 
+
|γ<sub>AHL,ext</sub>
-
|}
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|AHL cell-external degradation
-
{|class="roundContainer"
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|8.0225e-006/s
-
|
+
|Derived from 1 day half-life at pH 7 [[Team:ETH_Zurich/Modeling/References#Ref7|[7]]]
-
 
+
-
== Combined Model ==
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|}
|}
 +
{{:Team:ETH Zurich/Templates/SectionEnd}}
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{{:Team:ETH Zurich/Templates/HeaderNewEnd}}

Latest revision as of 13:36, 28 October 2011

Can you feel the smoke tonight?
 

Contents

Modeling - Parameters

Of course, our models do not work without parameters, and in our case, there are quite a lot of them. In order to keep track of all of their respective values and units, we gathered them in a series of tables on this page.

Single-Cell Model

a. - assumption

Parameter Description Value Reference
αTetR TetR max. production rate 3.93 μM/min, updated to 1 μM/min [5]
αC CI max. production rate 1 μM/min [1]
αL1 LacI max. production rate 1 μM/min [1]
αL2 LacIM1 max. production rate 1 μM/min [1]
αG GFP max. production rate 2 μM/min [1]
αLuxI LuxI max. production rate 1 μM/min [1]
ks1 AHLi production rate 0.01 1/min [2]
ρR LuxR-AHL dimerization rate 0.5 1/(μM3*min) [1]
αRFP RFP max. production rate 1 μM/min a.
βAcA Acetaldehyde repression coefficient 7.124 μM [5]
βT TetR repression coefficient 0.01 μM, updated to 0.1 μM/min a.
βC CI repression coefficient 0.008 μM [1]
βL LacI repression coefficient 0.8 μM [1]
θR LuxR-AHL repression coefficient 0.01 μM [1]
γTetR TetR degradation rate 0.0692 1/min a.
γC CI degradation rate 0.0692 1/min [1]
γL LacI degradation rate 0.0231 1/min [1]
γG GFP degradation rate 0.0692 1/min [1]
γLuxI LuxI degradation rate 0.0167 1/min [3]
ks0 AHLi degradation rate 1 1/min [2]
kse AHLe degradation rate 1 1/min [2]
γR LuxR-AHL degradation rate 0.0231 1/min [1]
γRFP RFP degradation rate 0.0041 1/min [4]
n1 LacI cooperativity coefficient 2 [1]
n2 CI cooperativity coefficient 2 [1]
n3 TetR cooperativity coefficient 2 [2]
n4 LuxR-AHL cooperativity coefficient 1 [1]
n5 AlcR-AcA cooperativity coefficient 1.352 [5]
n7 XylR cooperativity coefficient 5 [6]
η Diffusion rate across the cell membrane 2 [2]
ηext Average diffusion rate for all cells 1 [2]
N Number of cells 1 a.
aXylR XylR max. production rate 95.5 μM/min [6]
γXylRi XylRi degradation rate 0.03553 1/min [6]
γXylRa XylRa degradation rate 0.04527 1/min [6]
KXylR XylR activation coefficient 1.419*10-3 μM [6]
rXylR XylRi oligomerization constant 0.04315e-3 1/(μM*min) [6]
rRXylR XylRa dissociation constant 0.1301e-3 1/(μM*min) [6]


Diffusion Model

Parameter Description Value Reference
zend Microfluidics channel length 5 cm Choice in diffusion model
RChannel Microfluidics channel radius 1 mm Choice in diffusion model
VeColi E. coli average volume 2 μm3 [13] [14]
cdOD600, undiluted E. coli Cell Density at OD600 = 1 1e9 1/ml [13] [16]
cDilution Dilution of cell culture in microfludics channel 1/8 Choice in diffusion model
cdRelOD600, undiluted Relative E. coli Cell Density at OD600 = 1, undiluted 0.001 Derived from VeColi, cdOD600, undiluted
cdRelOD600, diluted Relative E. coli Cell Density at OD600 = 1, diluted 0.000125 Derived from cdRelOD600, undiluted, cDilution
CAgarose Scaling coefficient for diffusion of small molecules in agarose instead of water 0.9 a.
DAcAl Acetaldehyde Diffusion Constant 1.23e-5 cm2/s [8]
mAcAl Acetaldehyde Molecular Weight 44.05316 u [8]
Kcat,AcAl Specific enzyme activity of acetaldehyde dehydrogenase in E. coli 14.1 μmol/(min*mg) [10] [11]
[E]T Mean acetaldehyde dehydrogenase enzyme concentration in E. coli 1.6659 kg/m3 Estimation from cell extract, [11]
vmax,AcAl Maximum reaction rate for acetaldehyde dehydrogenase degrading acetaldehyde 0.02349 M/min Estimation from cell extract, [11]
KM,AcAl Michaelis-Menten constant for acetaldehyde dehydrogenase degrading acetaldehyde 10 μM [10] [11]
mADH Molecular mass of acetaldehyde dehydrogenase 33442 u [12]
nADH Mean number of acetaldehyde dehydrogenase protein molecules per E. coli cell 28512.2, rounded to 30000 Estimation from cell extract, [11]
[ADH]Extract acetaldehyde dehydrogenase concentration in E. coli cell extract 19 mg/ml [11]
dilExtract E. coli cell extract dilution 1/12 [11]


Combined Model

Parameter Description Value Reference
DAHL AHL Diffusion Constant 4.9e-6 cm2/s [9]
mAHL AHL Molecular Weight 297.38990 u [15]
γAHL,ext AHL cell-external degradation 8.0225e-006/s Derived from 1 day half-life at pH 7 [7]


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