Lineage for Family d.212.1.2: TonB
- Root: SCOP 1.65
Class d: Alpha and beta proteins (a+b) [53931] (234 folds) 
Fold d.212: TolA/TonB C-terminal domain [74652] (1 superfamily)
beta(2)-alpha-beta; 2 layers, alpha/beta; left-handed beta-alpha-beta unit in unswapped monomerSuperfamily d.212.1: TolA/TonB C-terminal domain [74653] (2 families) 
Family d.212.1.2: TonB [64326] (1 protein)
Segment-swapped dimer; forms single coiled antiparallel beta-sheet
Protein:
TonB [64327] (1 species) Species Escherichia coli [TaxId:562] [64328] (1 PDB entry)
More info for Family d.212.1.2: TonB
Timeline for Family d.212.1.2: TonB:
- Family d.212.1.2: TonB first appeared in SCOP 1.57, called Family d.191.1.1: Dimeric C-terminal domain of membrane protein TonB
- Family d.212.1.2: TonB appears in SCOP 1.63
- Family d.212.1.2: TonB appears in SCOP 1.67
- Family d.212.1.2: TonB appears in the current release, SCOPe 2.08