Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 1246-1251

Zeitschrift: Nucleic Acids Research

Bandnummer: 24

Heftnummer: 7

ISSN: 0305-1048

Open Access Status: Green

DOI Link: https://doi.org/10.1093/nar/24.7.1246

Verlag: Oxford University Press

Abstract: 
The large subunit ribosomal RNA of the purple bacterium Rhodobacter capsulatus shows fragmentation into pieces of 14 and 16S, both fragments forming the functional equivalent of intact 23S rRNA, An RNA-processing step removes an extra stem-loop structure from the 23S rRNA [Kordes,E, Jock,S,, Fritsch,J., Bosch,F, and Klug,G, (1994) J, Bacteriol,, 176, 1121-1127], Taking advantage of the fragmentation deficient mutant strain Fm65, we used genetic complementation to find the mutated gene responsible for this aberration, It was identified as the Rhodobacter homologue to me from Escherichia coli encoding endoribonuclease III (RNase III), The predicted protein has 226 amino acids with a molecular weight of 25.5 kDa, It shares high homology with other known RNase III enzymes over the full length, In particular it shows the double-stranded RNA-binding domain (dsRBD) motif essential for binding of dsRNA substrates. The Fm65 mutant has a frame shift mutation resulting in complete loss of the dsRBD rendering the enzyme inactive, The cloned Rhodobacter enzyme can substitute RNase III activity in an RNase III deficient E,coli strain, Contrary to E,coli, the Rhodobacter me is in one operon together with the lep gene encoding the leader peptidase.

Harvard-Zitierstil: Rauhut, R., Jager, A., Conrad, C. and Klug, G. (1996) Identification and analysis of the rnc gene for RNase III in Rhodobacter capsulatus, Nucleic Acids Research, 24(7), pp. 1246-1251. https://doi.org/10.1093/nar/24.7.1246

APA-Zitierstil: Rauhut, R., Jager, A., Conrad, C., & Klug, G. (1996). Identification and analysis of the rnc gene for RNase III in Rhodobacter capsulatus. Nucleic Acids Research. 24(7), 1246-1251. https://doi.org/10.1093/nar/24.7.1246