Kozak and IRES sequnces same thing?

[Dr Mark Watson]

Hi All

I am wondering what the differnce in function is between a Kozak
sequence and an Internal Ribosome Entry Site (IRES).  Does anyone know?
Do they do the same thing?  can one substitute for another?

Thanks All

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Dr Mark W Watson, Department of Microbiology
http://adrenalin.microbiol.uwa.edu.au/sigfile.html
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