- The trkB tyrosine protein kinase is a receptor for brain-derived neurotrophic factor and neurotrophin-3. Klein, R., Nanduri, V., Jing, S.A., Lamballe, F., Tapley, P., Bryant, S., Cordon-Cardo, C., Jones, K.R., Reichardt, L.F., Barbacid, M. Cell (1991)