Figure 1.

Alignment of domains of PRKs from different organisms. Odo sin, O. sinensis (accession no. Y08610); Phae tr, P. tricornutum (diatom, EST sequence data at http://avesthagen.sznbowler.com/); Tha ps, T. pseudonana (diatom, genome sequence data at http://genome.jgi-psf.org/thaps1/thaps1.home.html); Vau lit, Vaucheria litoralis (Xanthophyte, AF336986); Galdsu, G. sulphuraria (red alga, AJ012719); Syncyst, Synechocystis PCC6803 (MM77134); Chl rei, C. reinhardtii (M36123); Pis sat, Pisum sativum (Y11248); Ara th, Arabidopsis thaliana (X58149); and Spin ol, spinach (X07654). Numbers above the sequences and at the end of the lines indicate the respective amino acid positions. A, N-terminal region with the regulatory Cys residues. B, C-terminal regions containing additional Cys residues.