The budding yeast protein Stn1 is a DNA-binding protein which has specificity for telomeric DNA. Structural profiling has predicted an OB-fold [1]. This domain is the N-terminal part of the molecule, which adopts the OB fold. Protection of telomeres by multiple proteins with OB-fold domains is conserved in eukaryotic evolution [2].

1: RPA-like proteins mediate yeast telomere function. Gao H, Cervantes RB, Mandell EK, Otero JH, Lundblad V; Nat Struct Mol Biol. 2007;14:208-214. PMID:17293872

2: Protection of telomeres by a conserved Stn1-Ten1 complex. Martin V, Du LL, Rozenzhak S, Russell P; Proc Natl Acad Sci U S A. 2007;104:14038-14043. PMID:17715303

3: Telomere capping proteins are structurally related to RPA with an additional telomere-specific domain. Gelinas AD, Paschini M, Reyes FE, Heroux A, Batey RT, Lundblad V, Wuttke DS; Proc Natl Acad Sci U S A. 2009; [Epub ahead of print] PMID:19884503