SCOP 1.71: Protein: TonB

Lineage for Protein: TonB

Root: SCOP 1.71
Class d: Alpha and beta proteins (a+b) [53931] (286 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 non-swapped monomer
Superfamily d.212.1: TolA/TonB C-terminal domain [74653] (2 families)
Family d.212.1.2: TonB [64326] (1 protein)
isolated domain can form different segment-swapped dimers depending on the fragment length
Protein TonB [64327] (1 species)

Species:

Escherichia coli [TaxId:562] [64328] (3 PDB entries)
1. Domains for 1ihr:
  1. Domain d1ihra_: 1ihr A: [62392]
  2. Domain d1ihrb_: 1ihr B: [62393]
    forms segment-swapped dimer with a single coiled antiparallel beta-sheet
    complexed with br
2. Domain for 1qxx:
  - Domain d1qxxa_: 1qxx A: [96564]
    forms segment-swapped dimer with a single coiled antiparallel beta-sheet
3. Domains for 1u07:
  1. Domain d1u07a_: 1u07 A: [112902]
  2. Domain d1u07b_: 1u07 B: [112903]
    significant structural changes compared to shorter C-terminal fragments; monomer is structurally similar to the TolA domain

More info for Protein TonB from d.212.1.2: TonB

Timeline for Protein TonB from d.212.1.2: TonB:

Protein TonB from d.212.1.2: TonB first appeared in SCOP 1.57, called Protein Dimeric C-terminal domain of membrane protein TonB from d.191.1.1: Dimeric C-terminal domain of membrane protein TonB
Protein TonB from d.212.1.2: TonB appears in SCOP 1.69
Protein TonB from d.212.1.2: TonB appears in SCOP 1.73
Protein TonB from d.212.1.2: TonB appears in the current release, SCOPe 2.08