Lineage for Species: Salmonella phage SETP3 [TaxId: 424944]

1. Root: SCOPe 2.08

2. Class c: Alpha and beta proteins (a/b) [51349] (148 folds)

3. Fold c.52: Restriction endonuclease-like [52979] (4 superfamilies) core: 3 layers, a/b/a; mixed beta-sheet of 5 strands, order 12345; strands 2 &, in some families, 5 are antiparallel to the rest

4. Superfamily c.52.1: Restriction endonuclease-like [52980] (37 families)

5. Family c.52.1.35: Virus-type replication-repair nuclease (VRR-Nuc) [310663] (3 proteins) Pfam PF08774

6. Protein stNUC [310832] (1 species)

7. Species Salmonella phage SETP3 [TaxId:424944] [311101] (1 PDB entry)