Fig. 1

Domain structure of the four classes of CID proteins. Classes are denoted by letters (a, b, c and d), and subclasses by letters and a subsequent number (1 or 2). Representing A. thaliana CID orthologs defining each subclass or the G. max ortholog in subclass A2 are indicated. The schematic representation of relevant domains proposed for each class is depicted. The sequence LOGO for the PAM2 domain generated on each class are aligned together and enclosed by a rectangle; highly conserved residues are denoted at the top by an asterisk. PAE1, PAM2 Associated Element 1 [21]; acidic, rich in acidic amino acids [13]; IqQRP, a highly conserved signature [21]; GmERD15-TFD, Transcription Factor Domain predicted in G. max GmERD15 (Glyma02g42860) [23]; Lsm, Like RNA splicing domain Sm1 and Sm2, LsmAD, Lsm Associated Domain [18]; CUE, Coupling of Ubiquitin conjugation to ER degradation domain [24]; DUF1771, Domain of Unknown Function; SMR, Small MutS-Related domain [13]; RRM, RNA Recognition Motif [13]