Shishido, E., Emori, Y., Saigo, K. (1991). Identification of seven novel protein-tyrosine kinase genes of Drosophila by the polymerase chain reaction.  FEBS Lett. 289(2): 235--238.

FBrf0053997

Research paper

We used the polymerase chain reaction to identify 7 novel tyrosine-kinase genes (dtk1 to -7) in Drosophila melanogaster, dtk4 coded for a part of the kinase catalytic domain nearly identical in sequence to that of the human receptor for insulin-like growth factor 1, whereas sequences encoded by dtk1 and dtk2 were highly homologous to that of the chicken fibroblast growth factor receptor.