title: Variation in guanosine 5' ,3'-tetraphosphate levels in Chromatium.
abstract: Chromatium produces guanosine 5' ,3'-tetraphosphate, but there appears to be no correlation between guanosine 5' ,3'-tetraphosphate concentration and the inability of the organism to grow in certain light-dark regimes.
mesh_terms: D002844:Chromatium / Q000254:growth & development / Q000378:metabolism*; D003624:Darkness; D006150:Guanine Nucleotides / Q000378:metabolism*; D006160:Guanosine Triphosphate / Q000378:metabolism; D008027:Light
chemical_list: D006150:Guanine Nucleotides; D006160:Guanosine Triphosphate