A further 27 kinases were bound with %control < 10. Kd values for 16 kinases were determined and found to be below 100 nM. These included TXK (10 nM). Src family kinase Lck inhibitor 2 inhibited 48 kinases with %control < 1 (33 of them tyrosine kinases, almost half of the 71 tyrosine kinases in the panel) [2].