Structural and sequence similarity between KASH domains and the PNS tail of AtWIP1. C termini of animal and fungal KASH proteins are aligned with the C terminus of AtWIP1. Extension of the TMD and the PNS tail are indicated below the alignment. ClustalX color is assigned to the alignment for convenient comparison. Ce, Caenorhabditis elegans; Dd, Dictyostelium discoideum; Dm, Drosophila melanogaster; Hs, Homo sapiens; Mm, Mus musculus; Sp, Schizosaccharomyces pombe.