Files in this Data Supplement:

• Supplemental file 1 - Fig. S1 (Purity of ADP examined by TLC)
  Zipped EPS document, 574 KB.
• Supplemental file 2 - Fig. S2 (BC1 RNA inhibits the duplex unwinding activity of eIF4A)
  Zipped EPS document, 586 KB.
• Supplemental file 3 - Fig. S3 (Duplex unwinding activity of eIF4A)
  Zipped EPS document, 685 KB.
• Supplemental file 4 - Fig. S4 (BC1 RNA binding to PABP)
  Zipped EPS document, 418 KB.
• Supplemental file 5 - Fig. S5 (BC1 RNA specifically stimulates eIF4A ATPase activity)
  Zipped EPS document, 2.0 MB.
• Supplemental file 6 - Fig. S6 (eIF4A and eIF4B synergistically enhance each other’s cross-linking to BC1 RNA)
  Zipped EPS document, 835 KB.
• Supplemental file 7 - Fig. S7 (eIF4A interactions with BC1 and eIF4GI_737–1116)
  Zipped EPS document, 661 KB.
• Supplemental file 8 - Fig. S8 (ATP and AMP-PNP stimulate BC1-eIF4A cross-linking)
  Zipped EPS document, 830 KB.
• Supplemental file 9 - Fig. S9 (No endogenous BC200 RNA is detected in HEK293 cells)
  Zipped EPS document, 539 KB.
• Supplemental file 10 - Fig. S10 (Secondary structure of BC1 RNA)
  Zipped EPS document, 5 KB.
• Supplemental file 11 - Supplemental text and legends to Fig. S1 to S10
  Zipped MS Word document, 11 KB.