Literature summary for 3.1.13.1 extracted from

Germain, A.; Kim, S.H.; Gutierrez, R.; Stern, D.B.
Ribonuclease II preserves chloroplast RNA homeostasis by increasing mRNA decay rates, and cooperates with polynucleotide phosphorylase in 3 end maturation (2012), Plant J., 72, 96-971.

Search for more literature for 3.1.13.1

Organism

Organism	UniProt	Comment	Textmining
Arabidopsis thaliana	Q6NQJ6	-	-

Synonyms

Synonyms	Comment	Organism
Ribonuclease R	-	Arabidopsis thaliana
RNR1	-	Arabidopsis thaliana

General Information

General Information	Comment	Organism
physiological function	mutants lacking both ribonuclease RNR1 and polynucleotide phosphorylase exhibit embryo lethality. Combination of a RNR1 null mutation with weak polynucleotide phosphorylase mutant alleles leads to chlorotic plants which display a global reduction in RNA abundance. The enzymes catalyze a two-step maturation of mRNA 3' ends, with RNR1 polishing 3' termini created by polynucleotide phosphorylase. The bulky quaternary structure of polynucleotide phosphorylase compared with RNR1 may explain this activity split between the two enzymes. The RNR1 single mutant overaccumulates most mRNA species when compared with the wild type. The excess mRNAs in RNR1 are often present in non-polysomal fractions, and mostly show a substantial increase in stability	Arabidopsis thaliana

Use of this online version of BRENDA is free under the CC BY 4.0 license. See terms of use for full details.

Release 2023.1 (January 2023)