Polynucleotide phosphorylase: Not merely an RNase but a pivotal post-transcriptional regulator.

Abstract:

:Almost 60 years ago, Severo Ochoa was awarded the Nobel Prize in Physiology or Medicine for his discovery of the enzymatic synthesis of RNA by polynucleotide phosphorylase (PNPase). Although this discovery provided an important tool for deciphering the genetic code, subsequent work revealed that the predominant function of PNPase in bacteria and eukaryotes is catalyzing the reverse reaction, i.e., the release of ribonucleotides from RNA. PNPase has a crucial role in RNA metabolism in bacteria and eukaryotes mainly through its roles in processing and degrading RNAs, but additional functions in RNA metabolism have recently been reported for this enzyme. Here, we discuss these established and noncanonical functions for PNPase and the possibility that the major impact of PNPase on cell physiology is through its unorthodox roles.

journal_name

PLoS Genet

journal_title

PLoS genetics

authors

Cameron TA,Matz LM,De Lay NR

doi

10.1371/journal.pgen.1007654

subject

Has Abstract

pub_date

2018-10-11 00:00:00

pages

e1007654

issue

10

eissn

1553-7390

issn

1553-7404

pii

PGENETICS-D-18-01283

journal_volume

14

pub_type

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