Lineage for Family e.8.1.9: Influenza virus PB1

1. Root: SCOPe 2.08

2. Class e: Multi-domain proteins (alpha and beta) [56572] (74 folds)

3. Fold e.8: DNA/RNA polymerases [56671] (1 superfamily) divided into morphological domains including "palm", "thumb" and "fingers"; the catalytic "palm" domain is conserved to all members

4. Superfamily e.8.1: DNA/RNA polymerases [56672] (9 families) "palm" domain has a ferredoxin-like fold, related to that of an adenylyl cyclase domain

5. Family e.8.1.9: Influenza virus PB1 [418791] (1 protein) Pfam PF00602; contains PB1-specific N-terminal and C-terminal extensions and long beta ribbon described in PubMed 25409142 Part of Pfam PF00604