This domain family is found in eukaryotes, and is typically between 144 and 167 amino acids in length.

1: Identification of EloA-BP1, a novel Elongin A binding protein with an exonuclease homology domain. Tamura K, Miyata K, Sugahara K, Onishi S, Shuin T, Aso T; Biochem Biophys Res Commun. 2003;309:189-195. PMID:12943681