I've seen it claimed that the original eukaryote that took on the
original endosymbiote was actually an Archea. I haven't heard how this
turned out, but if true, then there is an excellent example in the
Archea use isoprenoid ethers for membrane lipids, while Bacteria and
Eukarya use ester-linked fatty acids. The isoprenoids are built up with
4-carbon units, fatty acids with 2-carbon units. A lot is known about
these systems, so you would have data to work with.
>> I am looking for exemples where an eukaryote acquired a whole metabolic
> path (for exemple biosynthesis of a compound) from a prokaryote. I know
> of endosymbiosis but I would like exemple swhere there is nothing left
> of the endosymbiont ( cryptic or transient endosymbiosis ? )
>> Do you have any idea or reference ?
>> Thank you in advance
Technical writing, literature search, and data analysis at the interface
of chemistry and biology.
davidbhedrick at icx.net
David B. Hedrick
P.O. Box 16082
Knoxville, TN 37996