Refolding, 18kDa- should not be problem.
"jocelyne matgelin" <jocelyne.mathelin at u-bourgogne.fr> wrote in message
news:9e43adef.0402130550.111ec4d1 at posting.google.com...
> I try to espress a 18KD protein (from calycins family) in pET-22b
> vector with BL21(DE3) strain, in order to obtain the protein of
> interest in the periplasmic space (for disulfide bonds formation).
> After several esperiments, I obtain my protein only in inclusion
> I tried different temperatures, with or without induction with IPTG at
> different concentrations, short or long time culture.
> What can I do now?