This domain is found at the N-terminus of fungal cell division control protein 13 (CDC13). It has an OB type fold. It is involved in dimerisation of CDC13 and in interaction of CDC13 with the catalytic subunit of DNA polymerase alpha, Pol1 [1].

1: Structural bases of dimerization of yeast telomere protein Cdc13 and its interaction with the catalytic subunit of DNA polymerase alpha. Sun J, Yang Y, Wan K, Mao N, Yu TY, Lin YC, DeZwaan DC, Freeman BC, Lin JJ, Lue NF, Lei M; Cell Res. 2011;21:258-274. PMID:20877309