1. Anticodon-binding domain [50250] (7)  
barrel, closed; n=5, S=10
2. RecG "wedge" domain [69259] (1) 
3. DNA helicase RuvA subunit, N-terminal domain [50259] (3)  
barrel, closed; n=5, S=10
4. Single strand DNA-binding domain, SSB [50263] (17)  
barrel, closed; n=5, S=10
5. Myf domain [50277] (7) 
6. Cold shock DNA-binding domain-like [50282] (56)  
barrel, closed; n=5, S=8
7. TRAM domain [101768] (3)  
Pfam 01938
8. Hypothetical protein MTH1 (MT0001), insert domain [74955] (1) 
9. DNA ligase/mRNA capping enzyme postcatalytic domain [50307] (6) 
10. Phage ssDNA-binding proteins [50315] (5)  
barrel, open; n*=5, S*=8; the members' structures vary greater that those from cellular organisms
11. DNA replication initiator (cdc21/cdc54) N-terminal domain [89332] (1) 
12. RNA polymerase subunit RBP8 [50321] (1)  
duplication; contains tandem repeat of two incomplete OB-folds; forms a single barrel; n=8, S=10
13. RecO N-terminal domain-like [117204] (1)  
N-terminal part of Pfam 02565
14. TIP49 domain [141315] (1)  
N-terminal part of Pfam 06068; the RuvA-like OB-fold domain in RuvB-like eukaryotic proteins
15. SSO2064-like [159109] (1)  
Pfam 01796; DUF35; contains extra N-terminal zinc finger subdomain of the rubredoxin-like fold
16. RNB domain-like [159112] (3)  
Pfam 00773; RNase II catalytic domain; decorated OB-fold domain with extra C-terminal structures forming the active site