ABSTRACT
We discus s i n thi s chapte r some specifi c protein s tha t no t onl y ar e important i n
their o w n righ t but als o provid e in their diversity some insigh t into th e function -
ing o f th e comple x gen e regulator y syste m tha t exist s i n mor e comple x eukary -
otic organisms .
