{PDOC00764}
{PS00996; RIBOSOMAL_S21E}
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* Ribosomal protein S21e signature *
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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.

-Consensus pattern: [LV]-Y-[IVC]-P-R-K-C-S-[SAT]
-Sequences known to belong to this class detected by the pattern: ALL.
-Other sequence(s) detected in Swiss-Prot: NONE.
-Last update: November 2005 / Pattern and text revised.

[ 1] Bhat K.S., Morrison S.G.
     "Primary structure of human ribosomal protein S21."
     Nucleic Acids Res. 21:2939-2939(1993).
     PubMed=8332502
[ 2] Suzuki K., Otaka E.
     "Cloning and nucleotide sequence of the gene encoding yeast ribosomal
     protein YS25."
     Nucleic Acids Res. 16:6223-6223(1988).
     PubMed=2899871
[ 3] Itoh T., Otaka E., Matsui K.A.
     "Primary structures of ribosomal protein YS25 from Saccharomyces
     cerevisiae and its counterparts from Schizosaccharomyces pombe and rat
     liver."
     Biochemistry 24:7418-7423(1985).
     PubMed=3910104

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