Table 3.
Classification of Class IV-Su(var) proteins
| Class | Type | Domain Architecture | Species | Extra Domains | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| At | Os | Pa | Sm | Pp | Mp | Nm | Kf | Mr | Mpu | Ot | Ol | Cv | Cr | Vc | Cp | |||||
| IV | IV-1 | 1A | SRA-PreSET-SET | + | + | + | + | + | – | + | + | – | + | – | – | + | + | + | – | DUF3574, Treacle, PPR, Pinin_SDK, COG3440 |
| 1B | SRA-SET | – | – | – | – | – | – | – | – | – | + | – | – | + | – | – | – | |||
| 1C | SRA-PreSET-SET-SET | – | – | – | – | – | – | – | – | – | – | – | – | – | + | – | – | |||
| IV-2 | 2A | PreSET-SET | + | + | + | + | + | + | + | + | – | + | – | – | – | – | – | – | LaMG, COG5281 | |
| 2B | PHD-PreSET-SET | – | – | – | + | – | – | – | – | – | – | – | – | – | – | – | – | TPR | ||
| 2C | ZnF_C2H2-ZnF_C2H2-PreSET-SET-PostSET | – | – | – | – | – | + | – | – | – | – | – | – | – | – | – | – | |||
| 2D | WIYLD-PreSET-SET | + | + | + | – | – | + | – | – | – | – | – | – | – | – | – | – | DUF5102, CNDH2_M | ||
| 2E | PreSET-SET-PostSET | – | + | – | – | – | – | + | – | – | – | – | – | – | – | – | – | |||
| 2F | ZnF_PreSET-SET | – | + | + | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
| 2G | PreSET-AWS-SET | + | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
| IV-Orphan | SET | – | – | – | – | + | + | – | + | – | + | + | + | + | + | + | + | |||
Su(var) proteins were classified into 3 classes, Class IV-1, Class IV-2 and Class Orphan which were further divided into subclasses. The detailed domain arrangement with additional domains are shown. (At- Arabidopsis thaliana; Os-Oryza sativa; Pa-Picea abies; Sm-Selaginella meollendorffii; Pp-Physcomitrella patens; Mp-Marchantia polymorpha; Nm-Nitella mirabilis; Kf-Klebsormidium flaccidium; Mr.-Micromonas RCCC; Mpu-Micromonas pusila; Ot-Ostreococcus tauri; Ol-Ostreococcus lumiferans; Cv-Chlorella vulgaris; Cr-Chlamydomonas reinhardtii; Vc-Volvox carteri; Cp-Cyanophora paradoxa. Plus sign (+) and minus sign (−) indicate presence and absence of an above mentioned domain architecture