Cyanobacterial RNA thermometer

The first cyanobacterial RNA thermometer (RNAT) Hsp17 was found in the 5'UTR of Synechocystis heat shock hsp17 mRNA.^[1] Further study demonstrated that cyanobacteria commonly use RNATs to control the translation of their heat shock genes. HspA is a homolog of Hsp17 in thermophilic Thermosynechococcus elongatus. Two more thermometers were found in the 5'UTRs of mesophilic cyanobacteria A. variabilis and Nostoc sp. The first RNAT called avashort was shown to regulate translation by masking the AUG translation start site. The second RNAT called avalong, as it has an extended initial hairpin, might involve tertiary interactions and has similarities to the ROSE element.^[2]

Avashort 5' UTR thermometer
Predicted secondary structure and sequence conservation of PinT small RNA
Identifiers
Rfam	RF02699
Other data
Domain(s)	Bacteria
GO	GO:0009266 ,GO:0045974
SO	SO:0005836,SO:0000204
PDB structures	PDBe

Avalong 5' UTR thermometer
Predicted secondary structure and sequence conservation of PinT small RNA
Identifiers
Rfam	RF02698
Other data
Domain(s)	Bacteria
GO	GO:0009266 ,GO:0045974
SO	SO:0005836,SO:0000204
PDB structures	PDBe