Table 2. Distribution of the different MAPK activation loop motifs in different groups of fungal MAPKs.

The activation loop T-E-Y and T-G-Y motifs are distributed in all four groups. The activation loop motif T-S-Y is unique to group A. The activation loop motif T-H-Y is distributed in groups A and B. The activation loop motifs S-D-Y, S-E-Y, T-T-Y and T-I-Y are unique to group D, while the K-G-Y motif is unique to groups A and C.

Fungal MAPK Groups	Activation loop motifs
Group A (red)	TEY, TGY, TNY, KGY, THY, TSY
Group B (lime)	TEY, TGY, TQY, THY,
Group C (magenta)	TEY, TGY, TNY, KGY
Group D (blue)	TEY, TGY, TIY, TTY, SEY, SDY