|  | Class d: Alpha and beta proteins (a+b) [53931] (224 folds) | 
|  | Fold d.104: Class II aaRS and biotin synthetases [55680] (1 superfamily) contains large mixed beta-sheet | 
|  | Superfamily d.104.1: Class II aaRS and biotin synthetases [55681] (2 families)  | 
|  | Family d.104.1.1: Class II aminoacyl-tRNA synthetase (aaRS)-like, catalyic domain [55682] (12 proteins) | 
|  | Protein Histidyl-tRNA synthetase (HisRS) [55688] (3 species) | 
|  | Species Thermus thermophilus [TaxId:274] [55691] (3 PDB entries) | 
|  | Domain d1adja2: 1adj A:2-325 [40737] Other proteins in same PDB: d1adja1, d1adjb1, d1adjc1, d1adjd1 | 
|  | Domain d1adjb2: 1adj B:2-325 [40738] Other proteins in same PDB: d1adja1, d1adjb1, d1adjc1, d1adjd1 | 
|  | Domain d1adjc2: 1adj C:2-325 [40739] Other proteins in same PDB: d1adja1, d1adjb1, d1adjc1, d1adjd1 | 
|  | Domain d1adjd2: 1adj D:2-325 [40740] Other proteins in same PDB: d1adja1, d1adjb1, d1adjc1, d1adjd1 complexed with so4 | 
|  | Domain d1adya2: 1ady A:2-325 [40741] Other proteins in same PDB: d1adya1, d1adyb1, d1adyc1, d1adyd1 | 
|  | Domain d1adyb2: 1ady B:2-325 [40742] Other proteins in same PDB: d1adya1, d1adyb1, d1adyc1, d1adyd1 | 
|  | Domain d1adyc2: 1ady C:2-325 [40743] Other proteins in same PDB: d1adya1, d1adyb1, d1adyc1, d1adyd1 | 
|  | Domain d1adyd2: 1ady D:2-325 [40744] Other proteins in same PDB: d1adya1, d1adyb1, d1adyc1, d1adyd1 complexed with ham, so4 | 
|  | Domain d1h4vb2: 1h4v B:2-325 [60625] Other proteins in same PDB: d1h4vb1 complexed with so4 | 
Timeline for Species Thermus thermophilus [TaxId:274] from d.104.1.1 Histidyl-tRNA synthetase (HisRS):