Dyrk, a dual specificity protein kinase with unique structural features whose activity is dependent on tyrosine residues between subdomains VII and VIII. - Kentrup ,H.; Becker ,W.; Heukelbach ,J.; Wilmes ,A.; Schurmann ,A.; Huppertz ,C.; Kainulainen ,H.; Joost ,H.G. (J Biol Chem, 1996)