This regions is found specifically in PRP19-like protein. The region represented by this family covers the sequence implicated in self-interaction and a coiled-coiled motif [1]. PRP19-like proteins form an oligomer that is necessary for spliceosome assembly [1].

1: SNEV is an evolutionarily conserved splicing factor whose oligomerization is necessary for spliceosome assembly. Grillari J, Ajuh P, Stadler G, Loscher M, Voglauer R, Ernst W, Chusainow J, Eisenhaber F, Pokar M, Fortschegger K, Grey M, Lamond AI, Katinger H; Nucleic Acids Res. 2005;33:6868-6883. PMID:16332694