Peter Hare asked about poly-adenylation sites in plants.
For the more than ten different mRNAs for which I have sequenced
cDNA clones only one or two genes had consistent poly-A addition sites.
of the others showed variability in the site of poly-A addition,
position by up to 50 bases. These range from EPSP synthase in tomato
some of the Arabidopsis cyclophilin genes. I would be interested to
there are any publications addressing this apparently common
csgasser at ucdavis.edu