30S

Svedberg

A svedberg is a non-SI physical unit used for sedimentation coefficients.  It characterizes the behaviour of a particle type in sedimentation processes, notably centrifugation.  The svedberg is technically a measure of time, and is defined as exactly 10-13 seconds A svedberg (symbol S, sometimes...

is the smaller subunit of the 70S ribosome

Ribosome

A ribosome is a component of cells that assembles the twenty specific amino acid molecules to form the particular protein molecule determined by the nucleotide sequence of an RNA molecule....

of prokaryote

Prokaryote

The prokaryotes are a group of organisms that lack a cell nucleus , or any other membrane-bound organelles. The organisms that have a cell nucleus are called eukaryotes. Most prokaryotes are unicellular, but a few such as myxobacteria have multicellular stages in their life cycles...

s. It is a complex of ribosomal RNA and ribonucleoproteins that functions in mRNA translation. It includes the subunit 16S

16S ribosomal RNA

16S ribosomal RNA is a component of the 30S subunit of prokaryotic ribosomes. It is approximately 1.5kb in length...

, which is composed entirely of ribosomal RNA.

The 30S subunit is the site of inhibition for antibiotics such as tetracycline and aminoglycosides.

External links

• 16S rRNA, BioMineWiki
• http://pathmicro.med.sc.edu/mayer/antibiot.htm