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Gene Review

RPS9  -  ribosomal protein S9

Homo sapiens

Synonyms: 40S ribosomal protein S9, S9
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High impact information on RPS9

  • The lem1 gene encodes a protein that is highly similar to the rice plastid 30S ribosomal protein S9 (PRPS9). lem1 maps to chromosome 1L and appears to be the only copy of prps9 in the maize genome [1].
  • A mutation in the nuclear-encoded plastid ribosomal protein S9 leads to early embryo lethality in maize [1].
  • A 48-d transplantation of animals into a polymetallic field contamination in the Lot river basin (Midi-Pyrénées region, France) showed that rpS9 gene regulation was correlated with the fluctuating cadmium and zinc water contents [2].
  • The rpS9 gene expression was studied by real-time reverse transcription-polymerase chain reaction [2].
  • Ribosomal subunit protein 9 (rps9) is a nuclearly encoded protein that resides in the apicoplast organelle of Toxoplasma gondii [3].

Biological context of RPS9

  • To explore a possible relationship between rp gene defects and human disease, we compared map positions of the rp genes and disease loci on chromosome 19, which led us to find RPS9 gene in the same interval as the gene for retinitis pigmentosa 11 [4].

Other interactions of RPS9

  • The housekeeping genes RPS9 and RPLP0 were applied to normalize differences in mRNA quality and quantity [5].

Analytical, diagnostic and therapeutic context of RPS9

  • To investigate proteins interacting with the rps9 leader sequence, parasites expressing rps9 leader constructs fused to a glutathione S-transferase (GST) reporter were prepared, and proteins associated with the leader constructs were purified from extracts by affinity chromatography [3].


  1. A mutation in the nuclear-encoded plastid ribosomal protein S9 leads to early embryo lethality in maize. Ma, Z., Dooner, H.K. Plant J. (2004) [Pubmed]
  2. Cdna cloning and gene expression of ribosomal S9 protein gene in the mollusk Corbicula fluminea: a new potential biomarker of metal contamination up-regulated by cadmium and repressed by zinc. Achard-Joris, M., Gonzalez, P., Marie, V., Baudrimont, M., Bourdineaud, J.P. Environ. Toxicol. Chem. (2006) [Pubmed]
  3. Cis and trans factors involved in apicoplast targeting in Toxoplasma gondii. Yung, S.C., Unnasch, T.R., Lang-Unnasch, N. J. Parasitol. (2003) [Pubmed]
  4. High-resolution mapping of ribosomal protein genes to human chromosome 19. Kenmochi, N., Ashworth, L.K., Lennon, G., Higa, S., Tanaka, T. DNA Res. (1998) [Pubmed]
  5. RAR-beta(1) overexpression in chromophobe renal cell carcinoma: a novel target for therapeutic intervention? Goelden, U., Ukena, S.N., Pfoertner, S., Hofmann, R., Buer, J., Schrader, A.J. Experimental oncology. (2005) [Pubmed]
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