SSU rRNA: Difference between revisions

{{Short description|One of the two major RNA components of the ribosome}}

{{missing information|structure (universal)|date=December 2020}}

'''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 protein]]s, the SSU rRNA forms the small subunit of the ribosome. It is encoded by SSU-[[ribosomal DNA|rDNA]].

{{Infobox rfam

| Symbol = SSU

| Rfam_clan = CL00111

}}

==Characteristics==

| [[16S ribosomal RNA|16S]]

|<ref>{{cite web | url = https://www.ncbi.nlm.nih.gov/nuccore/J01859.1 | title= ''Escherichia coli'' 16S ribosomal RNA | date= 13 June 2017 }}</ref>

|<ref>{{cite web | url = https://www.ncbi.nlm.nih.gov/nuccore/M38280.1 | title= ''Halobacterium salinarum'' 16S ribosomal RNA | date= 7 August 1991 }}</ref>

| [[18S ribosomal RNA|18S]]

|<ref>{{cite web | url = https://www.ncbi.nlm.nih.gov/nuccore/M10098.1 | title= ''Homo sapiens'' 18S ribosomal RNA (nuclear) | date= 2 May 1986 }}</ref>

|<ref name="NCBI NC_012920">''Homo sapiens'' mitochondrion, complete genome. [https://www.ncbi.nlm.nih.gov/nuccore/NC_012920.1 "Revised Cambridge Reference Sequence (rCRS): accession NC_012920"], ''[[National Center for Biotechnology Information]]''. Retrieved on 20 February 2017.</ref><ref>{{cite journal | vauthors = Anderson S, Bankier AT, Barrell BG, de Bruijn MH, Coulson AR, Drouin J, Eperon IC, Nierlich DP, Roe BA, Sanger F, Schreier PH, Smith AJ, Staden R, Young IG | display-authors = 6| title = Sequence and organization of the human mitochondrial genome | journal = Nature | volume = 290 | issue = 5806 | pages = 457–465 | date = April 1981 | pmid = 7219534 | doi = 10.1038/290457a0 | bibcode = 1981Natur.290..457A | s2cid = 4355527 }}</ref>

|<ref>{{cite web | url = https://www.ncbi.nlm.nih.gov/nuccore/NC_000932.1 | title= ''Arabidopsis thaliana'' 16S ribosomal RNA (chloroplast) | date= 26 September 2019 }}</ref>

SSU rRNA sequences are widely used for determining [[Phylogenetics|evolutionary relationships]] among organisms, since they are of ancient origin and are found in all known forms of life.<ref name="Woese_1990">{{cite journal | vauthors = Woese CR, Kandler O, Wheelis ML | title = Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 87 | issue = 12 | pages = 4576–4579 | date = June 1990 | pmid = 2112744 | pmc = 54159 | doi = 10.1073/pnas.87.12.4576 | bibcode = 1990PNAS...87.4576W | authorlink1 = Carl Woese | doi-access = free }}</ref>

== See also ==

== References ==

{{Ribosome subunits}}