The rne gene and ribonuclease E

The cloned rne + gene complements temperature sensitive RNase E mutations and directs the synthesis of a polypeptide. In vitro the RNA transcribed from the rne gene directs the synthesis of a number of polypeptides, one of which is identical in size to the in vivo product of the rne gene. A rabbit r...

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Veröffentlicht in:Biochimie 1993, Vol.75 (6), p.473-479
Hauptverfasser: Miczak, A., Apirion, D.
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Apirion, D.
description The cloned rne + gene complements temperature sensitive RNase E mutations and directs the synthesis of a polypeptide. In vitro the RNA transcribed from the rne gene directs the synthesis of a number of polypeptides, one of which is identical in size to the in vivo product of the rne gene. A rabbit reticulocyte cell free extract programmed with this RNA produced RNase E activity. Thus, it is evident that the rne gene is the structural gene for RNase E. However, the in vivo product of the cloned RNase E gene is more thermolabile than the chromosomal gene product. When cells containing the rne plasmid were treated with chloramphenicol, the pre-existing RNase E became less heat labile with time. This leads to the suggestion that in the cell RNase E undergoes post-translational modification(s).
doi_str_mv 10.1016/0300-9084(93)90113-7
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language eng
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source MEDLINE; Elsevier ScienceDirect Journals
subjects Animals
Biological and medical sciences
DNA, Bacterial - genetics
Endoribonucleases - genetics
Enzyme Stability
Escherichia coli - enzymology
Escherichia coli - genetics
Fundamental and applied biological sciences. Psychology
Gene Expression
Genes. Genome
Hot Temperature
Molecular and cellular biology
Molecular genetics
Plasmids
post-translational changes
Rabbits
Reticulocytes - metabolism
RNase E
temperature sensitivity
Transcription, Genetic
title The rne gene and ribonuclease E
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