Illustration of domain structure and phosphorylation sites of THOC5. A: Arrangement of potential functional domains in THOC5. NLS: nuclear localization signal; WWB: potential binding site for proteins with WW-domains; PEST: potential PEST domain; LZ: potential leucine zipper; p: phosphorylation sites. Conserved domain (more than 50% amino acid identity in a 10 amino acids or longer stretch) between mouse THOC5 (683 amino acids long: 683AA) and Drosophila melanogaster (Drosophila) (616AA), C. elegans (599AA) or S. pombe (200 AA) THOC5 is shown as grey boxes. Numbers represent amino acid numbers from mouse THOC5. B: An alignment of the key regions among mouse, human, Xenopus tropicalis (Xenopus), Danio rerio, Drosophila, C.elegans and S. pombe. C: Summary table of phosphorylation sites of THOC5.