ESF1 is required for 18S rRNA synthesis in Saccharomyces cerevisiae

Nucleic Acids Res. 2004 Mar 31;32(6):1993-9. doi: 10.1093/nar/gkh518. Print 2004.


We report that Esf1p (Ydr365cp), an essential, evolutionarily conserved nucleolar protein, is required for the biogenesis of 18S rRNA in Saccharomyces cerevisiae. Depletion of Esf1p resulted in delayed processing of 35S precursor and a striking loss of 18S rRNA. Esf1p physically associated with ribosomal proteins and proteins involved in 18S rRNA biogenesis. Consistent with its role in 18S rRNA biogenesis, Esf1p also physically associated with U3 and U14 snoRNAs, but did not appear to be a core component of the SSU processome. These data indicate that Esf1p plays a direct role in early pre-rRNA processing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Conserved Sequence
  • Molecular Sequence Data
  • Nuclear Proteins / genetics
  • Nuclear Proteins / physiology*
  • RNA Precursors / chemistry
  • RNA Precursors / metabolism
  • RNA, Ribosomal, 18S / biosynthesis*
  • RNA, Ribosomal, 18S / chemistry
  • RNA, Small Nucleolar / metabolism
  • Ribosomal Proteins / metabolism
  • Saccharomyces cerevisiae / genetics*
  • Saccharomyces cerevisiae / metabolism
  • Saccharomyces cerevisiae Proteins / genetics
  • Saccharomyces cerevisiae Proteins / physiology*
  • Sequence Alignment


  • ESF1 protein, S cerevisiae
  • Nuclear Proteins
  • RNA Precursors
  • RNA, Ribosomal, 18S
  • RNA, Small Nucleolar
  • Ribosomal Proteins
  • Saccharomyces cerevisiae Proteins