RocR, a novel regulatory protein controlling arginine utilization in Bacillus subtilis, belongs to the NtrC/NifA family of transcriptional activators.

Abstract excerpt

Bacillus subtilis can use ammonium and various amino acids as sole nitrogen sources. The utilization of arginine or ornithine is abolished in a sigma L-deficient strain of B. subtilis, indicating that one or several genes involved in this pathway are transcribed by a sigma L-RNA polymerase holoenzyme. Three B. subtilis genes, called rocA, rocB, and rocC, which seem to form an operon, were found near the sacTPA...

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