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Enzymatic synthesis of polynucleotides. II. Distribution of polynucleotide phosphorylase.
The Journal of biological chemistry, 2002 D O, BRUMMOND, M, STAEHELIN, S, OCHOA
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RNA oxidation: Role of polynucleotide phosphorylase in the quality control of oxidized RNA
JoLS, Journal of Life Sciences, 2021Reactive oxygen species is one of the most common cellular RNA damaging agents in living organisms. A growing number of studies show a strong correlation between oxidatively damaged RNA and human diseases, predominantly age-related neurodegenerative ...
Sulochan Malla, Alexander Kwakye
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Mechanism of polynucleotide phosphorylase
Biochemistry, 1989The de novo polymerization of RNA initiated by polynucleotide phosphorylase from nucleoside diphosphates was examined. End group analysis performed under conditions designed to specifically end label the polymer revealed no evidence for a 5'-pyrophosphate-terminated polymer.
M, Sulewski +3 more
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Human polynucleotide phosphorylase: location matters
Trends in Cell Biology, 2007Human polynucleotide phosphorylase (hPNPase) is an RNA-processing enzyme induced in response to type I interferons and during terminal differentiation and cellular senescence. hPNPase was thought to contribute to cellular senescence through its RNA-degrading activity in the cytosol; however, recent studies show that hPNPase localizes to the ...
Hsiao-Wen, Chen +2 more
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Photometric Assay for Polynucleotide Phosphorylase
Analytical Biochemistry, 1999Polynucleotide phosphorylase (PNPase) is a prokaryotic enzyme that catalyzes phosphorolysis of polynucleotides with release of NDPs. It is also believed to play a key role in turnover of prokaryotic transcripts, thus regulating gene expression. At the moment, only radioisotopic methods are available for assaying PNPase in crude extracts; these involve ...
L, Fontanella +5 more
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Polynucleotide phosphorylase from plant cells
Plant Cell Reports, 1984The isolation of polynucleotide phosphorylase (EC 2. 7. 7. 8) from suspension cultured plant cells of parsley (Petroselinum sativum) and from tomato seedlings (Lycopersicon esculentum) is described. The procedure includes an ultracentrifugation step, a glycerol density gradient centrifugation and preparative gel electrophoresis under nondenaturing ...
E, Schumacher-Wittkopf +2 more
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Polynucleotide Phosphorylase and the T3SS
2007Low temperatures as well as encounters with host phagocytes are two stresses that have been relatively well studied in many species of bacteria. The exoribonuclease polynucleotide phosphorylase (PNPase) has previously been shown to be required by several species of bacteria, including Yersinia, for low-temperature growth. We have shown that PNPase also
Jason A, Rosenzweig, Kurt, Schesser
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The origin of polynucleotide phosphorylase domains
Molecular Phylogenetics and Evolution, 2004In this report, we document the presence of polynucleotide phosphorylase (PNPase) in the animal eukaryotes. These proteins contain several domains, including 2 RNase PH domains (PNPase 1 and PNPase 2) which are closely related functionally and in sequence similarity to ribonuclease PH (RPH) protein.
Magdalena, Leszczyniecka +3 more
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