Biology:RPS4X

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

40S ribosomal protein S4, X isoform is a protein that in humans is encoded by the RPS4X gene.[1][2][3]

Ribosomes, organelles that catalyze protein synthesis, consist of a small 40S subunit and a large 60S subunit. Together these subunits are composed of 4 RNA species and approximately 80 structurally distinct proteins. This gene encodes ribosomal protein S4, a component of the 40S subunit. Ribosomal protein S4 is the only ribosomal protein known to be encoded by more than one gene, namely this gene and ribosomal protein S4, Y-linked (RPS4Y). The 2 isoforms encoded by these genes are not identical, but are functionally equivalent. Ribosomal protein S4 belongs to the S4E family of ribosomal proteins. This gene is not subject to X-inactivation. It has been suggested that haploinsufficiency of the ribosomal protein S4 genes plays a role in Turner syndrome; however, this hypothesis is controversial. As is typical for genes encoding ribosomal proteins, there are multiple processed pseudogenes of this gene dispersed through the genome.[3]

References

  1. "Molecular cloning of the human gene, CCG2, that complements the BHK-derived temperature-sensitive cell cycle mutant tsBN63: identity of CCG2 with the human X chromosomal SCAR/RPS4X gene". J Cell Sci 100 (1): 35–43. Apr 1992. doi:10.1242/jcs.100.1.35. PMID 1795030. 
  2. "Structure and function of ribosomal protein S4 genes on the human and mouse sex chromosomes". Mol Cell Biol 14 (4): 2485–92. Apr 1994. doi:10.1128/mcb.14.4.2485. PMID 8139551. 
  3. 3.0 3.1 "Entrez Gene: RPS4X ribosomal protein S4, X-linked". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=6191. 

Further reading