Figure 1.

Alignment of the predicted sequences of the C. reinhardtii Rh1 and Rh2 proteins with the sequence of human erythrocyte RhAG (A) and their percent sequence identity with all known human Rh proteins (B). Residues that are identical in any two of the proteins are shaded and the Rh1 peptide against which antiserum was raised (residues 485–506) is indicated in blue italics. The dotted box at the N terminus encloses a predicted chloroplast transit peptide for Rh1 and a possible transit peptide for Rh2 (ExPASy Molecular Biology Server, Swiss Institute of Bioinformatics; http://ca.expasy.org/tools/#ptm). Putative transmembrane spanning segments (3) are underlined in red.