SSU rRNA

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

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.

{{Infobox rfam

| Symbol = SSU

| Rfam_clan = CL00111

}}

Characteristics

class="wikitable sortable" style="text-align: center;"

|+ Characteristics of the SSU rRNA for exemplary species.

!Type

!SSU rRNA size

!Species

!Length

!Accession

!Reference

Bacterial (Prokaryotic)

| 16S

| Escherichia coli

| 1,541 nt

| J01859.1

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

Archaeal (Prokaryotic)

| 16S

| Halobacterium salinarum

| 1,473 nt

| M38280.1

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

Eukaryotic

| 18S

| Homo sapiens

| 1,969 nt

| M10098.1

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

Mitochondrial

| 12S

| Homo sapiens

| 954 nt

| NC_012920.1

|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.{{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 }}

Plastid

| 16S

| Arabidopsis thaliana

| 1,491 nt

| NC_000932.1

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

Use in phylogenetics

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.{{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 }}

References

Category:Ribosomal RNA

Category:Protein biosynthesis

SSU rRNA

Characteristics

Use in phylogenetics

See also

References