7S RNA, containing 5S ribosomal RNA and the termination stem, is a specific substrate for the two RNA processing enzymes RNase III and RNase E

Biochemistry ◽  
1984 ◽  
Vol 23 (13) ◽  
pp. 2952-2957 ◽  
Author(s):  
Jozsef Szeberenyi ◽  
Monoj K. Roy ◽  
Hemant C. Vaidya ◽  
David Apirion
Keyword(s):  
Ribosomal Rna ◽  
Rna Processing ◽  
Specific Substrate ◽  
Rnase E ◽  
Rnase Iii ◽  
5S Ribosomal Rna ◽  
Processing Enzymes

scholarly journals Impact of PNPase on the transcriptome of Rhodobacter sphaeroides and its cooperation with RNase III and RNase E

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Daniel-Timon Spanka ◽  
Carina Maria Reuscher ◽  
Gabriele Klug
Keyword(s):  
Rhodobacter Sphaeroides ◽  
Rna Processing ◽  
Regulatory Networks ◽  
Organic Peroxide ◽  
Rna Degradation ◽  
Major Influence ◽  
Rnase E ◽  
Sequencing Data ◽  
Rnase Iii ◽  
Gram Negative

Abstract Background The polynucleotide phosphorylase (PNPase) is conserved among both Gram-positive and Gram-negative bacteria. As a core part of the Escherichia coli degradosome, PNPase is involved in maintaining proper RNA levels within the bacterial cell. It plays a major role in RNA homeostasis and decay by acting as a 3′-to-5′ exoribonuclease. Furthermore, PNPase can catalyze the reverse reaction by elongating RNA molecules in 5′-to-3′ end direction which has a destabilizing effect on the prolonged RNA molecule. RNA degradation is often initiated by an endonucleolytic cleavage, followed by exoribonucleolytic decay from the new 3′ end. Results The PNPase mutant from the facultative phototrophic Rhodobacter sphaeroides exhibits several phenotypical characteristics, including diminished adaption to low temperature, reduced resistance to organic peroxide induced stress and altered growth behavior. The transcriptome composition differs in the pnp mutant strain, resulting in a decreased abundance of most tRNAs and rRNAs. In addition, PNPase has a major influence on the half-lives of several regulatory sRNAs and can have both a stabilizing or a destabilizing effect. Moreover, we globally identified and compared differential RNA 3′ ends in RNA NGS sequencing data obtained from PNPase, RNase E and RNase III mutants for the first time in a Gram-negative organism. The genome wide RNA 3′ end analysis revealed that 885 3′ ends are degraded by PNPase. A fair percentage of these RNA 3′ ends was also identified at the same genomic position in RNase E or RNase III mutant strains. Conclusion The PNPase has a major influence on RNA processing and maturation and thus modulates the transcriptome of R. sphaeroides. This includes sRNAs, emphasizing the role of PNPase in cellular homeostasis and its importance in regulatory networks. The global 3′ end analysis indicates a sequential RNA processing: 5.9% of all RNase E-dependent and 9.7% of all RNase III-dependent RNA 3′ ends are subsequently degraded by PNPase. Moreover, we provide a modular pipeline which greatly facilitates the identification of RNA 5′/3′ ends. It is publicly available on GitHub and is distributed under ICS license.

Adenovirus infection retards ribosomal RNA processing

1989 ◽  
Vol 138 (1) ◽  
pp. 205-207 ◽  
Author(s):  
Susan H. Lawler ◽  
Robert W. Jones ◽  
Brian P. Eliceiri ◽  
George L. Eliceiri
Keyword(s):  
Ribosomal Rna ◽  
Rna Processing ◽  
Adenovirus Infection ◽  
Ribosomal Rna Processing

scholarly journals Elucidation of pathways of ribosomal RNA degradation: an essential role for RNase E

RNA ◽  
2016 ◽  
Vol 22 (8) ◽  
pp. 1163-1171 ◽  
Author(s):  
Shaheen Sulthana ◽  
Georgeta N. Basturea ◽  
Murray P. Deutscher
Keyword(s):  
Ribosomal Rna ◽  
Essential Role ◽  
Rna Degradation ◽  
Rnase E

PHYLOGENETIC RELATIONSHIPS IN GREEN PLANTS—A COMMENT ON THE USE OF 5S RIBOSOMAL RNA SEQUENCES BY BREMER ET AL.

Taxon ◽  
1988 ◽  
Vol 37 (1) ◽  
pp. 135-138 ◽  
Author(s):  
Kelly P. Steele ◽  
Kent E. Holsinger ◽  
Robert K. Jansen ◽  
David W. Taylor
Keyword(s):  
Ribosomal Rna ◽  
Phylogenetic Relationships ◽  
Rna Sequences ◽  
5S Ribosomal Rna ◽  
Green Plants ◽  
Ribosomal Rna Sequences

scholarly journals Knockout of the plastid RNase E leads to defective RNA processing and chloroplast ribosome deficiency

2010 ◽  
Vol 64 (5) ◽  
pp. 851-863 ◽  
Author(s):  
Michael Walter ◽  
Katrin Piepenburg ◽  
Mark Aurel Schöttler ◽  
Kerstin Petersen ◽  
Sabine Kahlau ◽  
...  
Keyword(s):  
Rna Processing ◽  
Rnase E ◽  
Defective Rna

scholarly journals Is wheat mitochondrial 5S ribosomal RNA prokaryotic in nature?

1981 ◽  
Vol 9 (14) ◽  
pp. 3523-3529 ◽  
Author(s):  
M.W. Gray ◽  
D.F. Spencer
Keyword(s):  
Ribosomal Rna ◽  
5S Ribosomal Rna
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