Fold: Microbial ribonucleases

single helix packs against antiparallel beta-sheet

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: Microbial ribonucleases
   single helix packs against antiparallel beta-sheet

Superfamilies:

1. Microbial ribonucleases (1)
   1. Microbial ribonucleases (11)
      1. RNase Sa
         1. Streptomyces aureofaciens (12)
      2. RNase F1
         1. Fusarium moniliforme (4)
      3. RNase T1
         1. Aspergillus oryzae (54)
         2. Aspergillus niger (1)
      4. RNase U2
         1. Ustilago sphaerogena (1)
      5. Barnase/Binase
         1. Bacillus amyloliquefaciens (33)
            Barnase
         2. Bacillus intermedius (2)
            Binase
      6. RNase Ms
         1. Molsin (Aspergillus saitoi) (2)
      7. RNase St
         1. Streptomyces erythreus (1)
      8. Ribotoxin
         cytotoxic ribonuclease
         1. Fungus (Aspergillus restrictus), restrictocin (1)
         2. Fungi (Aspergillus giganteus), alpha-Sarcin (1)