Laurent Duret (duret at evoserv.univ-lyon1.fr) wrote:
: For example, a protein gene may have evolved by fusion of two genes, exchange of exon,
: etc. This mode of evolution is frequently observed, particularly among higher eukaryotes (probably because of the interuption of genes by introns). For a recent
: review, see Patthy 1994, Curr. Opin. Struct. Biol. 4:383-392.
: Suppose that protein AB arose by fusion of protein A and protein B, that protein
: AC arose by fusion of protein A and protein C and that protein BC arose by fusion of
: protein B and protein C.
: AB, AC and BC share homology. However, these homology relationships can not be
: represented by a tree.
I'm a bit confused, do you mean the DNA sequences or do you mean the actual
protein itself? If you mean the actual protein then I agree that tracing
the ancestry of each of the components forming the holoprotein would be
incredibly complicated.
Andy.
--
:90lingan at wave.scar.utoronto.ca :::::::::::::::::::::::::::::::::::::::::
: "I guess I'll have to tell Skinner that the suspect *is* a giant worm.":
:::::::::::::::::::::::::::::::::::::::::: --Muldur from "The X-Files" :::
