The Cyano-S1 RNA motif (originally named the Cyano-30S motif) is a conserved
RNA
Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes. RNA and deoxyribonucleic acid ( DNA) are nucleic acids. Along with lipids, proteins, and carbohydra ...
structure present in some species of
Cyanobacteria
Cyanobacteria (), also known as Cyanophyta, are a phylum of gram-negative bacteria that obtain energy via photosynthesis. The name ''cyanobacteria'' refers to their color (), which similarly forms the basis of cyanobacteria's common name, blu ...
.
Cyano-S1 RNAs are consistently found upstream of genes encoding
ribosomal protein S1, a subunit of the
ribosome
Ribosomes ( ) are macromolecular machines, found within all cells, that perform biological protein synthesis (mRNA translation). Ribosomes link amino acids together in the order specified by the codons of messenger RNA (mRNA) molecules to ...
. Therefore, they are presumed to be
ribosomal protein leader
A ribosomal protein leader is a mechanism used in cells to control the cellular concentration of a protein that forms a part of the ribosome, and to make sure that the concentration is neither too high nor too low. Ribosomal protein leaders are RNA ...
s, i.e.,
cis-regulatory elements to which the ribosomal protein S1 binds, thereby controlling its
expression levels.
See also
*
Cyano-2 RNA motif
The Cyano-2 RNA motif is a conserved RNA structure identified by bioinformatics. Cyano-2 RNAs are found in Cyanobacterial species classified within the genus ''Synechococcus''. Many terminal loops in the two conserved stem-loops contain the nuc ...
*
Yfr2
Yfr2 (cYanobacterial functional RNA-2 later published as Cyano-1 RNA motif) is a family of non-coding RNAs. Members of the Yrf2 family have been identified in almost all studied species of cyanobacteria. The family was identified through a bioinf ...
*
Yfr1
Yfr1 is a Cyanobacterial functional RNA that was identified by a comparative genome based screen for RNAs in cyanobacteria. Further analysis has shown that the RNA is well conserved and highly expressed in cyanobacteria. and is required for gr ...
References
Ribosomal protein leader
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