... alsocontain a PAC motif, and conversely that all PAC-annotated A. thaliana proteins contain a PAS domain.Therefore, in the case of A. thaliana,thePASandPACmotifs are inseparable, indicating that ... R674–R677.4.Kasahara,M.,Swartz,T.E.,Olney,M .A. ,Onodera ,A. ,Mochizuki,N.,Fukuzawa,H.,Asamizu,E.,Tabata,S.,Kanegae,H., Takano, M., Christie, J.M., Nagatani, A. & Briggs, W.R.(2002) Photochemical properties ... future.3Arabidopsis,Escherichia,CaenorhabditisandAzotobacter– a case studySome of the PAS domains have been analysed in detail.We chose four representative organisms from the animal,bacterial and plant kingdoms, A. thaliana,...