Team:TU Delft/24 April 2010 content

From 2010.igem.org

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==Session 8==
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=Session 8=
Now it’s not if we like the idea anymore (otherwise it wouldn’t be a chosen idea), but how could we accomplish it? How feasible is it? What BioBricks do we expect to make with this?
Now it’s not if we like the idea anymore (otherwise it wouldn’t be a chosen idea), but how could we accomplish it? How feasible is it? What BioBricks do we expect to make with this?
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<h3>1. Oil removal</h3>
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===1. Oil removal===
* Hydrocarbon degradation
* Hydrocarbon degradation
* Oil sand processing gives wastewater with allot of oil (bitumen) => Convert this wastewater into something valuable
* Oil sand processing gives wastewater with allot of oil (bitumen) => Convert this wastewater into something valuable
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Split into 3 teams:
Split into 3 teams:
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<h4> Hydrocarbon degradation</h4>
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* Genes for enzymes that degrade various aromatic compounds are known
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'''Hydrocarbon degradation'''
* Maybe start with Benzoic acid & Alkenes?
* Maybe start with Benzoic acid & Alkenes?
* Probably the most work of all the teams, but others could help once they are done
* Probably the most work of all the teams, but others could help once they are done
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* Be careful whether the intermediates may be toxic
* Be careful whether the intermediates may be toxic
* Sugar metabolism is no longer necessary in E.coli
* Sugar metabolism is no longer necessary in E.coli
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<h4> Salt tolerance</h4>
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'''Salt tolerance'''
* Give the other team a strain of E.coli that can handle salt.
* Give the other team a strain of E.coli that can handle salt.
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* Article: gene that helps in salt resistance (sea levels, NaCl) but function isn’t really understood
 
* Biobrick 2009; not clear whether it works or not?
* Biobrick 2009; not clear whether it works or not?
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<h4> Overcoming mass transfer </h4>
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'''Overcoming mass transfer'''
* Adding an emulsifier to make the oil soluble?
* Adding an emulsifier to make the oil soluble?
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* Peptide production made of Leucine & Glutamic acid (paper) with an export mechanism
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* Production of hydrophilic/hydrophobic peptide?
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* Production of hydrophilic/hydrophobic peptide
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<h4> Extra features</h4>
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'''Extra features'''
* We are making allot of acetyl CoA, so why not produce something useful?
* We are making allot of acetyl CoA, so why not produce something useful?
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* Biofuel? Propanol/ethanol/biodiesel? There are some biobricks for this… but no Exporter? (Biobrick)
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* Biofuel? Propanol/ethanol/biodiesel? There are some biobricks for this… but no Exporter? (Biobrick), PHA/PHB
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* PHA/PHB
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* What about working at higher temperatures? Ethanol vaporization
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'''Other points'''
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<h4> Other points </h4>
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* Money / many biobricks / lot of literature
* Money / many biobricks / lot of literature
* Is E.coli the bug to go with?
* Is E.coli the bug to go with?
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'''Vote: Yes (8/8)'''
'''Vote: Yes (8/8)'''
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<h3>2. Algae bloom /nitrate reduction</h3>
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===2. Algae bloom /nitrate reduction===
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* Fumarate reductase is the only difference between the aerobic and anaerobic paths?
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* A mutated FNR can induce the nitrate consumption under aerobic conditions
* A mutated FNR can induce the nitrate consumption under aerobic conditions
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* But there is also an E.coli strain that can reduce nitrite & nitrate under aerobic conditions
 
* Biobrick for nitrite sensor
* Biobrick for nitrite sensor
* E.coli would probably be outcompeted by the algae? Depends on the carbon source
* E.coli would probably be outcompeted by the algae? Depends on the carbon source
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* Appealing idea to switch on and off the aerobic/anaerobic pathways…
 
* Some enzymes will be inhibited by oxygen
* Some enzymes will be inhibited by oxygen
'''Vote: No (0/8)'''
'''Vote: No (0/8)'''
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<h3>3. Appetite inhibitor</h3>
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===3. Appetite inhibitor===
* Caerulein
* Caerulein
* Combination with circadian clock for times of production and non-production?
* Combination with circadian clock for times of production and non-production?
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* Combination with cell differentiation for part of the MOs to produce (and maybe die), while the others don’t produce the peptide.
 
* Regulation is definitely necessary
* Regulation is definitely necessary
* Couple it to blood sugar levels? Not really possible to sensor something in the blood from within the gut?
* Couple it to blood sugar levels? Not really possible to sensor something in the blood from within the gut?
'''Vote: No (3/8)'''
'''Vote: No (3/8)'''
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<h3>4. Circadian Clocks / oscillators</h3>
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===4. Circadian Clocks / oscillators===
* Oscillations are easy to come by
* Oscillations are easy to come by
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* Maybe too simple as a project on its own?
 
* Tool for another project?
* Tool for another project?
* Hard to accurately predict the actual frequency; could only occur through true labwork
* Hard to accurately predict the actual frequency; could only occur through true labwork

Latest revision as of 19:04, 2 August 2010

Contents

Session 8

Now it’s not if we like the idea anymore (otherwise it wouldn’t be a chosen idea), but how could we accomplish it? How feasible is it? What BioBricks do we expect to make with this?

1. Oil removal

  • Hydrocarbon degradation
  • Oil sand processing gives wastewater with allot of oil (bitumen) => Convert this wastewater into something valuable
  • Salinity, pH, mass transfer problems

Split into 3 teams:

Hydrocarbon degradation

  • Maybe start with Benzoic acid & Alkenes?
  • Probably the most work of all the teams, but others could help once they are done
  • Most likely an aerobic process (most likely none of the enzymes are oxygen sensitive)
  • Be careful whether the intermediates may be toxic
  • Sugar metabolism is no longer necessary in E.coli

Salt tolerance

  • Give the other team a strain of E.coli that can handle salt.
  • Biobrick 2009; not clear whether it works or not?

Overcoming mass transfer

  • Adding an emulsifier to make the oil soluble?
  • Production of hydrophilic/hydrophobic peptide?

Extra features

  • We are making allot of acetyl CoA, so why not produce something useful?
  • Biofuel? Propanol/ethanol/biodiesel? There are some biobricks for this… but no Exporter? (Biobrick), PHA/PHB

Other points

  • Money / many biobricks / lot of literature
  • Is E.coli the bug to go with?
  • We don’t necessarily have to put all 4 projects into one strain, but we can start with 4 and maybe if we have time we could try to.
  • Good project that represents Delft (mass transfer etc.)
  • There are no biobricks for hydrocarbon degradation!

Vote: Yes (8/8)

2. Algae bloom /nitrate reduction

  • A mutated FNR can induce the nitrate consumption under aerobic conditions
  • Biobrick for nitrite sensor
  • E.coli would probably be outcompeted by the algae? Depends on the carbon source
  • Some enzymes will be inhibited by oxygen

Vote: No (0/8)

3. Appetite inhibitor

  • Caerulein
  • Combination with circadian clock for times of production and non-production?
  • Regulation is definitely necessary
  • Couple it to blood sugar levels? Not really possible to sensor something in the blood from within the gut?

Vote: No (3/8)

4. Circadian Clocks / oscillators

  • Oscillations are easy to come by
  • Tool for another project?
  • Hard to accurately predict the actual frequency; could only occur through true labwork
  • Frequency would be dependent on the concentrations of the compounds as well as the growth rates for these also determine the degradation etc.
  • How could you change affinity constants? (Kai system)
  • Biobrick for Kai is already available, but how can you influence the frequency without trial-and-error?
  • There is literature that could help make a model…

Vote: No (3/8)