Small subunit ribosomal ribonucleic acid (SSU rRNA) is the smaller of the two major RNA components of the ribosome.Associated with a number of ribosomal proteins, the SSU rRNA forms the small subunit of the ribosome. It is encoded by SSU-rDNA.

SSU rRNA
Identifiers
SymbolSSU
RfamCL00111
Other data
PDB structuresPDBe

Characteristics edit

Characteristics of the SSU rRNA for exemplary species.
TypeSSU rRNA sizeSpeciesLengthAccessionReference
Bacterial (Prokaryotic)16SEscherichia coli1,541 ntJ01859.1[1]
Archaeal (Prokaryotic)16SHalobacterium salinarum1,473 ntM38280.1[2]
Eukaryotic18SHomo sapiens1,969 ntM10098.1[3]
Mitochondrial12SHomo sapiens954 ntNC_012920.1[4][5]
Plastid16SArabidopsis thaliana1,491 ntNC_000932.1[6]

Use in phylogenetics edit

SSU rRNA sequences are widely used for determining evolutionary relationships among organisms, since they are of ancient origin and are found in all known forms of life.[7]

See also edit

  • LSU rRNA: the large subunit ribosomal ribonucleic acid.

References edit

  1. ^ "Escherichia coli 16S ribosomal RNA". 13 June 2017.
  2. ^ "Halobacterium salinarum 16S ribosomal RNA". 7 August 1991.
  3. ^ "Homo sapiens 18S ribosomal RNA (nuclear)". 2 May 1986.
  4. ^ Homo sapiens mitochondrion, complete genome. "Revised Cambridge Reference Sequence (rCRS): accession NC_012920", National Center for Biotechnology Information. Retrieved on 20 February 2017.
  5. ^ Anderson S, Bankier AT, Barrell BG, de Bruijn MH, Coulson AR, Drouin J, et al. (April 1981). "Sequence and organization of the human mitochondrial genome". Nature. 290 (5806): 457–465. Bibcode:1981Natur.290..457A. doi:10.1038/290457a0. PMID 7219534. S2CID 4355527.
  6. ^ "Arabidopsis thaliana 16S ribosomal RNA (chloroplast)". 26 September 2019.
  7. ^ Woese CR, Kandler O, Wheelis ML (June 1990). "Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya". Proceedings of the National Academy of Sciences of the United States of America. 87 (12): 4576–4579. Bibcode:1990PNAS...87.4576W. doi:10.1073/pnas.87.12.4576. PMC 54159. PMID 2112744.