Lineage for Family d.67.1.1: Threonyl-tRNA synthetase (ThrRS), second 'additional' domain

1. Root: SCOPe 2.08

2. Class d: Alpha and beta proteins (a+b) [53931] (396 folds)

3. Fold d.67: RRF/tRNA synthetase additional domain-like [55185] (4 superfamilies) core: alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta

4. Superfamily d.67.1: ThrRS/AlaRS common domain [55186] (2 families) putative editing domain found in the N-terminal part of ThrRS, the C-terminal of AlaRS, and as a stand-alone protein; probable circular permutation of LuxS (d.185.1.2)

5. Family d.67.1.1: Threonyl-tRNA synthetase (ThrRS), second 'additional' domain [55187] (1 protein)