Because Crp-cAMP binds to the flhDC promoter region and interacts with RNA polymerase to activate transcription, the cAMP-dependent catabolite repression systems of E. coli and Serratia marcescens are ...
Serratia marcescens can produce a red pigment called prodigiosin (particularly at lower incubation temperatures, around 25°C). Such pigments can provide quick visual clues but should always be ...
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