Alignment of the predicted amino acid sequence of SLC4s in P. tricornutum and T. pseudonana, and two human SLC4s. from Mechanisms of carbon dioxide acquisition and CO<sub>2</sub> sensing in marine diatoms: a gateway to carbon metabolism

The black and gray boxes indicate putative transmembrane helices (TM1-TM14) predicted by TMHMM and SOSUI, and the putative first methionine, respectively. ☆ and * show the three CO2 responsive PtSLC4s and putative chloroplast membranes-localized DIC transporters, respectively.