Fig. 3

Predicted topological structure of each of the NCX family members in Arabidopsis and rice. Here, all the members are divided into clades according to phylogenetic relationship among Arabidopsis and rice NCX families (as shown in Additional file 1: Figure S1 and in Fig. 3). Topological structures were generated using Protter v1.0 (see Methods). For splice variants possessing a similar predicted topological architecture, only a single model for the topology has been provided. Red colored N-terminal regions in a few NCX proteins represent putative signal peptides. Finger-like projections are loops joining N- and C-terminus groups of TMS, these loops may act as EF hand. The box at the top-left is a schematic representation of the plasma membrane (shown as orange bar) with the extra- and the intra-cellular regions specified