Nlk sequence and comparison to nmo. (A) Complete nucleotide and amino acid sequence of Nlk. Highlighted are Lys-155, the putative ATP-binding site; and Thr-286, Gln-287, and Glu-288, a putative phosphorylation/regulatory site. A glutamine, alanine, histidine, and proline-rich N-terminal region is underlined. (B) Comparison of the murine Nlk and the Drosophila nmo amino acid sequences. Lines between the two sequences indicate sequence identity. Double dots indicate conserved amino-acid residues, single dots indicate semiconserved residues.