In article <331128D9.65CC at gwis2.circ.gwu.edu>, zpyu at gwis2.circ.gwu.edu wrote:
> Do any elements (such as circular DNA) exist in the world that can like
> in bacteria or yeasts but can replicate and express themselves
> independent of their hosts?
No.
Reason - take a look at any basic biochemistry textbook at what is
required for metabolite production, transcription, translation, DNA
replication et cetera.
Closest thing to it are in vitro models where components are added back to
create a cell-free expression system (eg. reticulocyte system).
Cheers
Karl the hepB guy
--
Karl Fischer
tyr-2 at bones.biochem.ualberta.ca
