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measure enzyme or RNA in bacteria?

Koen De Smet kds30
Fri Nov 3 08:06:29 EST 1995

I plan to monitor the activity/level of a number of enzymes 
and their end products in mycobacteria under different growth 
and stress conditions. What would be the best way? Should I go 
for enzyme activities, protein levels (Western blots) or RNA 
levels (Northern blots or RNAse protection assays)?

Some people have told me that all three options would 
basically give the same results, because control of expression 
levels is the main regulatory mechanism in bacteria, but other 
people have told me that this isn't always true.

Thanks beforehand for any advise or comments.


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