Table 1. Individual sRNA and asRNA regulators discussed in this review.
| Name | Organism | Targets | Comments | Ref. |
|---|---|---|---|---|
| RSs0680a | R. sphaeroides | likely C1 metabolism genes | inducible by 1O2, O2‒ and heat | 24 , 39 |
| RSs1543 | R. sphaeroides | n.k. | inducible by 1O2, O2‒ and heat | 39 |
| RSs2461 | R. sphaeroides | n.k. | inducible by 1O2, O2‒ and heat | 24 , 39 |
| RSs0019 | R. sphaeroides | likely sulfur metabolism genes | inducible by 1O2 | 24 |
| RSs0682 | R. sphaeroides | n.k. | most abundant sRNA | 24 |
| RSs2430, PcrZ | R. sphaeroides | bchN mRNA (light independent protochlorophyllide reductase) and puc2A mRNA (pigment binding protein) | induced under low oxygen tension | 40 |
| SyR1 or PsrR1 | Synechocystis 6803 | likely several targets in the photosynthetic apparatus | strongly inducible by high light | 23 |
| IsrR | Synechocystis 6803 | isiA negative regulator | involved in iron stress response, codegradation with target mRNA | 61 , 62 |
| As_flv4 | Synechocystis 6803 | flv4, flv4-flv2 operon negative regulator | involved in the response to shifts in inorganic carbon supply | 65 |
| PsbA2R, PsbA3R | Synechocystis 6803 | positive regulator of psbA2 and psbA3 mRNA stability | expression is co-stimulated with target mRNAs by light | 66 |
| α-furA | Anabaena 7120, Microcystis aeruginosa PCC7806 | furA negative regulator | involved in the integration of iron and redox stress responses | 77 , 78 |
| NsiR1 | Anabaena 7120 | n.k. | inducible by nitrogen depletion in developing heterocysts | 43 |
| Yfr1 | Prochlorococcus MED4, Synechococcus elongatus PCC 6301, many other | outer membrane proteins PMM1119 and PMM1121 (P. MED4); sodium-dependent bicarbonate transporter SbtA (S. elongatus) | very abundant sRNA | 20 , 57 , 58 , 60 |
The first column gives the name of the respective sRNA or asRNA, the second the organisms in which it has been found, the third the regulatory targets (n.k., not known), followed by additional relevant observations and respective references (Ref.).