FIG. 4.

Alignment of SMU-2 and its homologs. The alignment was adapted from individual pairwise alignments made with the ClustalW program. Similar residues are boxed; identical residues in two or more homologs are shaded. A complete cDNA of the Drosophila homolog, CG18005, was sequenced by us. A cDNA corresponding to the Arabidopsis homolog, At2g26460, was sequenced by The Institute for Genomic Research. The RED domain of human RED is underlined. The positions of the mn416 and mn610 mutations and the insertion site for GFP are indicated.