This domain has been shown to bind preferentially to dsRNA [1]. The domain is found in SUA5 Swiss:P32579 as well as HypF and YrdC Swiss:P45748. It has also been shown to be required for telomere recombniation in yeast.

1: The structure of the yrdC gene product from Escherichia coli reveals a new fold and suggests a role in RNA binding. Teplova M, Tereshko V, Sanishvili R, Joachimiak A, Bushueva T, Anderson WF, Egli M; Protein Sci 2000;9:2557-2566. PMID:11206077

2: The universal YrdC/Sua5 family is required for the formation of threonylcarbamoyladenosine in tRNA. El Yacoubi B, Lyons B, Cruz Y, Reddy R, Nordin B, Agnelli F, Williamson JR, Schimmel P, Swairjo MA, de Crecy-Lagard V; Nucleic Acids Res. 2009;37:2894-2909. PMID:19287007

3: The Sua5 protein is essential for normal translational regulation in yeast. Lin CA, Ellis SR, True HL; Mol Cell Biol. 2010;30:354-363. PMID:19884342

4: Sua5p is required for telomere recombination in Saccharomyces cerevisiae. Meng FL, Chen XF, Hu Y, Tang HB, Dang W, Zhou JQ; Cell Res. 2010;20:495-498. PMID:20309016