Files in this Data Supplement:

• Supplemental file 1 - Fig. S1 (Sequence alignment of RNase III signature motifs with KREN3)
  Zipped JPEG document, 164K.
• Supplemental file 2 - Legend to Fig. S1
  MS Word document, 24K.
• Supplemental file 3 - Supplemental text
  MS Word document, 45K.
• Supplemental file 4 - Table S1 (Oligonucleotide sequences used for cloning and real-time PCR)
  MS Word document, 51K.