the rela gene product , atp : gtp 3'-pyrophosphotransferase ( stringent factor ) has been isolated in homogeneous form from an escherichia coli strain polyploid for this gene at a yield of 1 mg/100 g cells and at a specific activity in a ribosome-activated assay at 37 degrees c of 120 mumol guanosine pentaphosphate formed min-1 mg protein-1 .
C0007634
cells
C0035553
ribosome