This invention relates to an isolated nucleic acid fragment encoding a cholinephosphate
cytidylyltransferase. The invention also relates to the construction of a chimeric
gene encoding all or a portion of the cholinephosphate cytidylyltransferase, in
sense or antisense orientation, wherein expression of the chimeric gene results
in production of altered levels of the cholinephosphate cytidylyltransferase in
a transformed host cell.