Figure 2.
Alignment of the hinge 1 region and adjacent regions of NR3 in C. subsalsa with NR2 in C. subsalsa, NR1 of Heterosigma akashiwo, NRs of four other representative algal species, Thalassiosira pseudonana, Phaeodactylum tricornutum, Dunaliella salina, and Chlamydomonas reinhardtii, as well as NRs in higher plants, Glycine max, Nicotina tabacum, and Zea mays. The single underlined sequences indicate the adjacent domains, showing the absence of the cytb-5 binding domain in NR3 (indicated by grey arrow). The double underlined sequences indicate the motif containing the serine phosphorylation site for 14-3-3 protein binding in NR3 and NRs in higher plants (indicated by black arrow). The identical residues in all sequences are marked by *; the highly and weakly conserved residues are marked by : and ., respectively.