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Ribonuclease II (RNase II), encoded by the rnb gene, is one of the two major Escherichia coli exonucleases involved in mRNA degradation. Some of the ribonucleases implicated in this process have recently been shown to be inter-regulated. In this paper we studied the effects of the endonucleases RNase E and RNase III in rnb expression. We have shown that RNase E cleaves the rnb message internally:...
The degradation of mRNA plays a central role in the control of protein synthesis. In Escherichia coli, the rnb gene encodes ribonuclease II (RNase II), one of the two main exonucleases involved in mRNA decay. We have constructed strain CMA201, in which the rnb promoter region and the gene were deleted from the chromosome and replaced by a tet r cassette. This is the first rnb absolute deletion...
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