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Any constituent part of cytosol, that part of the cytoplasm that does not contain membranous or particulate subcellular components. Either of the two ribonucleoprotein complexes that associate to form a ribosome. Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. A ribosome that is found in the cytosol of the cell. The cytosol is that part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. Examples of this component are found in Mus musculus, and in Bacterial and Archaeal species. The small subunit of the ribosome that is found in the cytosol of the cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components. Examples of this component are found in Mus musculus, and in Bacterial and Archaeal species. The smaller of the two subunits of a ribosome. An intracellular organelle, about 200 A in diameter, consisting of RNA and protein. It is the site of protein biosynthesis resulting from translation of messenger RNA (mRNA). It consists of two subunits, one large and one small, each containing only protein and RNA. Both the ribosome and its subunits are characterized by their sedimentation coefficients, expressed in Svedberg units (symbol: S). Hence, the prokaryotic ribosome (70S) comprises a large (50S) subunit and a small (30S) subunit, while the eukaryotic ribosome (80S) comprises a large (60S) subunit and a small (40S) subunit. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site). Ribosomes from prokaryotes, eukaryotes, mitochondria, and chloroplasts have characteristically distinct ribosomal proteins. The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: cytosolic small ribosomal subunit
Acc: GO:0022627
Aspect: Cellular Component
Desc: The small subunit of the ribosome that is found in the cytosol of the cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components. Examples of this component are found in Mus musculus, and in Bacterial and Archaeal species.
Synonyms:
  • GO:0005843
  • GO:0009283
  • 40S ribosomal subunit
  • 30S ribosomal subunit
  • prokaryotic small ribosomal subunit
  • GO:0030499
  • GO:0030873
  • eukaryotic ribosomal SSU
Proteins in PDR annotated with:
   This term: 323 [Search]
   Term or descendants: 323 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0022627 - cytosolic small ribosomal subunit (interactive image map)

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