title: Why ppGpp?
mesh_terms: D000227:Adenine Nucleotides / Q000502:physiology*; D018407:Bacterial Physiological Phenomena; D004734:Energy Metabolism; D006150:Guanine Nucleotides / Q000502:physiology*; D006159:Guanosine Tetraphosphate / Q000502:physiology*; D013171:Spores, Bacterial / Q000502:physiology
chemical_list: D000227:Adenine Nucleotides; D006150:Guanine Nucleotides; D006159:Guanosine Tetraphosphate