|  | Class d: Alpha and beta proteins (a+b) [53931] (385 folds) | 
|  | Fold d.306: YefM-like [143119] (1 superfamily) core: beta-alpha(2)-beta(2)-alpha; mixed beta-sheet, order:123, strands 1 and 2 are parallel; forms compact dimer with a single beta-sheet; | 
|  | Superfamily d.306.1: YefM-like [143120] (2 families)  | 
|  | d.306.1.1: YefM-like [143121] (2 proteins) antitoxin component of the YefM/YoeB-like system; binds to the toxin component wia extra C-terminal tail, unstructured in the free state, but adopting a RelB-like conformation in the bound state automatically mapped to Pfam PF02604 | 
|  | d.306.1.0: automated matches [191570] (1 protein) not a true family | 
Timeline for Superfamily d.306.1: YefM-like: