1. Staphylococcal nuclease [50199] (1) 2. Bacterial enterotoxins [50203] (2) 3. TIMP-like [50242] (3) 4. Heme chaperone CcmE [82093] (1) 5. gp5 N-terminal domain-like [69255] (1) 6. Hypothetical protein YgiW [101756] (1) 7. Nucleic acid-binding proteins [50249] (16) 8. Inorganic pyrophosphatase [50324] (1) 9. MOP-like [50331] (3) 10. CheW-like [50341] (1) 11.TM0957-like [141318] (1) extra N-terminal region and large insertion after strand 3 together form an alpha-helical subdomain 12.NfeD domain-like [141322] (1) close structural similarity to some members of the Nucleic acid-binding OB-fold proteins, possibly related to this superfamily 13. BC4932-like [159121] (1) 14. HupF/HypC-like [159127] (1) contains extra C-terminal helix packed against the beta-barrel side 15. EutN/CcmL-like [159133] (1) homohexameric unit 16. HIN-2000 domain-like [159141] (1) duplication: tandem repeat of two OB-fold domains