Tertiary structure-based identification of putative MoBP proteins in Arabidopsis. Ribbon representations of Arabidopsis proteins At5g11950 (Protein Data Bank code 1YDH, chain B) (A) and At2g37210 (Protein Data Bank code 2A33, chain B) (B). C, ribbon representation of Chlamydomonas MCP (code 2IZ5, chain A). D, superposition of 1YDH chain B (red), 2A33 chain B (green), and 2IZ5 chain A (gray). Figures were generated by use of EBI-SSM (20) and rendered using the VMD Molecular Graphics Viewer (30). E, sequence alignment of Arabidopsis proteins At5g11950 and At2g37210 with Chlamydomonas MCP. The alignment was generated with ClustalW. Identical residues are shaded in black and similar residues are shaded in gray.