Files in this Data Supplement:

• Supplemental file 1 - Fig. S1 (Endonucleolytic cleavage steps leading to generation of mature rRNA species from a common 35S rRNA nucleolar precursor), S2 (Sedimentation profiles of Rrp7p-, Pwp2p-, and Nan1p-MYC in wild-type cells), S3 (Nop7p forms large preribosomal particles independently of Nan1p), S4 (Proteomic analysis of subunits of the 90S preribosomal particle), and S5 (Nan1p and Pwp2p do not require Rrp5p to form large preribosomal particles); references and legends for Fig. S1 to S6; and Table S1 (S. cerevisiae strains used in this study)
  Zipped PDF document, 3.5MB.
• Supplemental file 2 - Fig. S6 (Pair-wise interactions found among 90S particle proteins)
  Zipped Excel document, 6K.