PROSITE documentation PDOC00764
Ribosomal protein S21e signature


A number of eukaryotic ribosomal proteins can be grouped on the basis of sequence similarities. One of these families consists of:

  • Mammalian S21 [1].
  • Caenorhabditis elegans S21.
  • Plants S21.
  • Yeast S21 (Ys25) [2].
  • Fission yeast S28 [3].

These proteins have 82 to 87 amino acids. As a signature pattern, we selected a highly conserved nonapeptide in the N-terminal part of these proteins.

Last update:

November 2005 / Pattern and text revised.


Technical section

PROSITE method (with tools and information) covered by this documentation:

RIBOSOMAL_S21E, PS00996; Ribosomal protein S21e signature  (PATTERN)


1AuthorsBhat K.S. Morrison S.G.
TitlePrimary structure of human ribosomal protein S21.
SourceNucleic Acids Res. 21:2939-2939(1993).
PubMed ID8332502

2AuthorsSuzuki K. Otaka E.
TitleCloning and nucleotide sequence of the gene encoding yeast ribosomal protein YS25.
SourceNucleic Acids Res. 16:6223-6223(1988).
PubMed ID2899871

3AuthorsItoh T. Otaka E. Matsui K.A.
TitlePrimary structures of ribosomal protein YS25 from Saccharomyces cerevisiae and its counterparts from Schizosaccharomyces pombe and rat liver.
SourceBiochemistry 24:7418-7423(1985).
PubMed ID3910104

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