CRK1N stimulated filamentous and invasive growth in S. cerevisiae. (A) Colony morphologies of isogenic wild-type (WT; CG31), ste7/ste7 (HLY351), ste12/ste12 (HLY352), tec1/tec1 (HLY2002), phd1/phd1 ste12/ste12 (L6235), and flo8/flo8 (HLY852) strains carrying vector (left) or CRK1N (right) grown on SLAD at 30°C for 4 days. (B) Total and invasive growth of wild-type (L5528), ste7 (HLY367), ste12 (HLY362), tec1 (HLY2000), and flo8 (HLY850) strains carrying a vector (left) or CRK1N (right) after 5 days of growth on SC−Ura.