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612 right i.hinners at
Tue Feb 15 06:58:49 EST 2000

Hi Gareth,
Promega sells BL21s called codon plus
there are two types,one type for GC rich, one type for AT rich genomes

Hope it helps, Ina

Gareth wrote:

> Anyone heard of a bacterial strain that's been enhanced for mammalian
> protein expression with tRNA's more suitable for the human codon
> frequency.
> Can't remember the companies name that sells them, but our labs starting
> up some protein expression, and although I've been quite happy with
> BL21's etc in the past. I was wondering if there was anything better out
> there.
> Thanks
> Gareth Phillips, PhD
> Dept. Pediatrics
> University of Chicago

Ina Hinners
Secretory Pathways Laboratory
44 Lincolns Inn Fields
WC2A 3PX London
email: I.Hinners at

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