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Table 6 Experimental information for concentrations and changes under starvation

From: Cell cycle control and environmental response by second messengers in Caulobacter crescentus

Variables Nutrient-rich Nutrient-starved Species Reference
(p)ppGpp 50 μM - E.coli [11]
  10-30 μM millimolar B.subtilis [22]
GTP 900 μM - E.coli [16]
  - 3-fold drop (arginine starved) B.subtilis [21]
  1000-3000 μM - B.subtilis [17]
  - 3-fold drop (glucose starved) marine Vibrio [57]
GDP 100 μM - E.coli [16]
  - 14-fold drop (arginine starved) B.subtilis [21]
GMP 24 μM - E.coli [58]
[pppGpp]:[GTP] ratio ≈0.1 ≈0.3 (arginine starved) B.subtilis [38]
  0.08 - E.coli [59]
[ppGpp]:[GTP] ratio ≈0.25 ≈1.2 (arginine starved) B.subtilis [38]
  0.16 - E.coli [59]
  ≈0.1 ≈1.5 (arginine starved) C.crescentus [20]
   ≈2.5 (glucose starved)   
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