Lineage for Species: Aquifex aeolicus [TaxId: 63363]

1. Root: SCOPe 2.08

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

3. Fold d.218: Nucleotidyltransferase [81302] (1 superfamily) core: alpha-beta-turn-beta-X-beta-(alpha); mixed beta-sheet, order of core strands: 123

4. Superfamily d.218.1: Nucleotidyltransferase [81301] (16 families)

5. Family d.218.1.4: Poly A polymerase head domain-like [82661] (2 proteins) overlaps with the N-terminal part of Pfam PF01743; this family is distinct from eukaryotic PAPs insert X in the core is an alpha-beta(2) unit; contains two extra C-terminal strands; mixed 7-stranded sheet, order: 7612543

6. Protein Poly A polymerase PcnB [110931] (1 species)

7. Species Aquifex aeolicus [TaxId:63363] [110932] (1 PDB entry) Uniprot O66728 443-824