This entry represents the OB fold of single-stranded DNA binding protein Ssb from archaea and its homologues from mammals and plants. Members of this entry have a simple domain organisation consisting of a single DNA-binding OB fold coupled to a flexible C-terminal tail [1-3]. The ssDNA recognition is modulated by base-stacking of three key aromatic residues in archaeal Ssb, in contrast with the OB domain of the human homologue hSSB1 [3].

1: Insights into ssDNA recognition by the OB fold from a structural and thermodynamic study of Sulfolobus SSB protein. Kerr ID, Wadsworth RI, Cubeddu L, Blankenfeldt W, Naismith JH, White MF; EMBO J. 2003;22:2561-2570. PMID:12773373

2: The structural basis of DNA binding by the single-stranded DNA-binding protein from Sulfolobus solfataricus. Gamsjaeger R, Kariawasam R, Gimenez AX, Touma C, McIlwain E, Bernardo RE, Shepherd NE, Ataide SF, Dong Q, Richard DJ, White MF, Cubeddu L; Biochem J. 2015;465:337-346. PMID:25367669

3: Structural basis of SOSS1 complex assembly and recognition of ssDNA. Ren W, Chen H, Sun Q, Tang X, Lim SC, Huang J, Song H; Cell Rep. 2014;6:982-991. PMID:24630995