Fig. 3

Origin of the calmodulin-like domain (CaM-LD) of the X monophyly genes. a The CaM-LD of the X monophyly genes was closely related to the CML IIIs as shown in the phylogenetic tree based on 89 protein sequences. Node supporting values from left to right: near maximum likelihood, maximum likelihood, Bayesian method. b The structures of the CaM-LD of the X monophyly genes shared two specific motifs at the C-terminal shown in the red box. The CBLs shared three motifs (in a light purple box) with CMLs, the X monophyly genes (in dark purple box) with a completely reversed order