PROSITE documentation PDOC00560
Ribosomal protein L9 signature


Ribosomal protein L9 is one of the proteins from the large ribosomal subunit. In Escherichia coli, L9 is known to bind directly to the 23S rRNA. It belongs to a family of ribosomal proteins which, on the basis of sequence similarities [1,2], groups:

  • Eubacterial L9.
  • Cyanobacterial L9.
  • Plant chloroplast L9 (nuclear-encoded).
  • Red algal chloroplast L9.

As a signature pattern, we have selected a conserved region, located in the N-terminal section of these proteins.

Last update:

December 2004 / Pattern and text revised.


Technical section

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

RIBOSOMAL_L9, PS00651; Ribosomal protein L9 signature  (PATTERN)


1AuthorsHoffman D.W. Davies C. Gerchman S.E. Kycia J.H. Porter S.J. White S.W. Ramakrishnan V.
TitleCrystal structure of prokaryotic ribosomal protein L9: a bi-lobed RNA-binding protein.
SourceEMBO J. 13:205-212(1994).
PubMed ID8306963

2AuthorsOtaka E. Hashimoto T. Mizuta K. Suzuki K.
SourceProtein Seq. Data Anal. 5:301-313(1993).

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