This presumed domain is found at the C-terminus of the S. cerevisiae SRP40 protein Swiss:P32583 and its homologues. SRP40/nopp40 is a chaperone involved in nucleocytoplasmic transport. SRP40 is also a suppressor of mutant AC40 subunit of RNA polymerase I and III.

1: Comparison of the rat nucleolar protein nopp140 with its yeast homolog SRP40. Differential phosphorylation in vertebrates and yeast. Meier UT; J Biol Chem 1996;271:19376-19384. PMID:8702624

2: The Srp40 protein plays a dose-sensitive role in preribosome assembly or transport and depends on its carboxy-terminal domain for proper localization to the yeast nucleoskeleton. Ikonomova R, Sommer T, Kepes F; DNA Cell Biol 1997;16:1161-1173. PMID:9364927