|  | Class d: Alpha and beta proteins (a+b) [53931] (234 folds) | 
|  | Fold d.150: 4'-phosphopantetheinyl transferase [56213] (1 superfamily) beta-alpha(3)-beta(2) motif | 
|  | Superfamily d.150.1: 4'-phosphopantetheinyl transferase [56214] (2 families)  possibly related to the IspF (d.79.5) and YjgF-like superfamilies (d.79.1) | 
|  | d.150.1.1: 4'-Phosphopantetheinyl transferase SFP [56215] (1 protein) monomeric; tandem duplication of beta-alpha(3)-beta(2) motif | 
|  | d.150.1.2: Holo-(acyl carrier protein) synthase ACPS [64418] (1 protein) forms trimers with three closely packed beta-sheets similar to tose of IspF | 
Timeline for Superfamily d.150.1: 4'-phosphopantetheinyl transferase: