Team:Imperial College/Resistance

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=Chloramphenicol Resistance Assay=
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{{Imperial/StartPage2}}
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This protocol is designed for use with Chloramphenicol and the chloramphenicol acetyltransferase gene, however it may work well for characterising other antibiotic resistance genes, particularly if the antibiotic concentrations are optimised.
 
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==Materials==
 
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{{Imperial/Box1|Chloramphenicol Resistance Assay|
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This protocol is designed for use with chloramphenicol and the chloramphenicol acetyltransferase gene, however it may work well for characterising other antibiotic resistance genes, particularly if the antibiotic concentrations are optimised.
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======Materials======
50ml tube
50ml tube
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Spreaders
Spreaders
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======Method======
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==Method==
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*Chloramphenicol concentrations used in this assay were; 5μg/ml, 10μg/ml, 20μg/ml, 30μg/ml, 40μg/ml, 50μg/ml, 75μg/ml, 100μg/ml, 150μg/ml and 200μg/ml.
*Chloramphenicol concentrations used in this assay were; 5μg/ml, 10μg/ml, 20μg/ml, 30μg/ml, 40μg/ml, 50μg/ml, 75μg/ml, 100μg/ml, 150μg/ml and 200μg/ml.
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# Make 4 LB agar plates (depending on how many repeats you want) at each chloramphenicol concentration.
# Make 4 LB agar plates (depending on how many repeats you want) at each chloramphenicol concentration.
# Transfer  approxiamtely 10ml of LB into the 50ml tube and chloramphenicol to a concentration of 5μg/ml.
# Transfer  approxiamtely 10ml of LB into the 50ml tube and chloramphenicol to a concentration of 5μg/ml.
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# Grow plates in the incubator or on the bench overnight.
# Grow plates in the incubator or on the bench overnight.
# Check plates for growth after 24 hours and note the approximate precentage of the plate covered in cells.
# Check plates for growth after 24 hours and note the approximate precentage of the plate covered in cells.
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======Results======
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==Results==
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This was used to test chloraphemicol acetyltransferase activity and resistance infered.
This was used to test chloraphemicol acetyltransferase activity and resistance infered.
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These results can be accessed [https://2008.igem.org/wiki/index.php?title=Team:Imperial_College/CAT here].
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These results can be accessed [https://2008.igem.org/wiki/index.php?title{{equals}}Team:Imperial_College/CAT here].
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<br><hr>{{Imperial/EndPage|Protocols|Protocols}}

Latest revision as of 00:33, 30 October 2008


Chloramphenicol Resistance Assay

This protocol is designed for use with chloramphenicol and the chloramphenicol acetyltransferase gene, however it may work well for characterising other antibiotic resistance genes, particularly if the antibiotic concentrations are optimised.

Materials

50ml tube

An antibiotic resistant bacterium

Chloramphenicol

LB agar

LB medium

Lots of plates

Spreaders

Method
  • Chloramphenicol concentrations used in this assay were; 5μg/ml, 10μg/ml, 20μg/ml, 30μg/ml, 40μg/ml, 50μg/ml, 75μg/ml, 100μg/ml, 150μg/ml and 200μg/ml.
  1. Make 4 LB agar plates (depending on how many repeats you want) at each chloramphenicol concentration.
  2. Transfer approxiamtely 10ml of LB into the 50ml tube and chloramphenicol to a concentration of 5μg/ml.
  3. Innoculate the flask with resistant bacterial strain and grow overnight
  4. The following morning, plate 50μl of the bacterial solution onto 2 plates per concentration, 100μl onto the third plate at each concentration and 150μl onto the final plates.
  5. Grow plates in the incubator or on the bench overnight.
  6. Check plates for growth after 24 hours and note the approximate precentage of the plate covered in cells.
Results

This was used to test chloraphemicol acetyltransferase activity and resistance infered.

These results can be accessed here.