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一般描述
Polynuclotide phosphorlyase in spinach chloroplasts acts as a exonuclease and a poly(A) polymerase.
应用
Polynucleotide phosphorylase has been used in a study to discover that a major function of PNPase is the synthesis of CDP. It has also been used in a study to investigate the enzyme responsible for RNA 3′-tail synthesis in S. coelicolor.
生化/生理作用
Polynucleotide phosphorylase (PNPase) is a bifunctional enzyme with a phosphorolytic 3′ to 5′ exoribonuclease activity and a 3′-terminal oligonucleotide polymerase activity.
Polynucleotide phosphorylase localizes to the intermembrane space of mitochondria and has a critical function in regulating mitochondrial homeostasis in human cells.
单位定义
One unit will polymerize 1.0 μmole of ADP, releasing 1.0 μmole of inorganic phosphate in 15 minutes, at pH 9.1 at 37 °C.
Supplied as a solution in 20 mM Hepes buffer pH 7.9, 0.1 mM EDTA, 2 mM DTT, 12.5 mM MgCl2, 60 mM KCl, 20% (w/v) Glycerol
储存分类代码
12 - Non Combustible Liquids
WGK
WGK 1
闪点(°F)
Not applicable
闪点(°C)
Not applicable
法规信息
常规特殊物品
历史批次信息供参考:
分析证书(COA)
Lot/Batch Number
Patricia Bralley et al.
Microbiology (Reading, England), 152(Pt 3), 627-636 (2006-03-04)
As in other bacteria, 3'-tails are added post-transcriptionally to Streptomyces coelicolor RNA. These tails are heteropolymeric, and although there are several candidates, the enzyme responsible for their synthesis has not been definitively identified. This paper reports on three candidates for
A Danchin
DNA research : an international journal for rapid publication of reports on genes and genomes, 4(1), 9-18 (1997-02-28)
Genome comparison permits identification of chromosome regions conserved during evolution. Bacillus subtilis and Escherichia coli are so distant that there exists very few conserved landmarks in their genome organisation. Analysis of the conserved cmk rpsA cluster pinpointed the importance of
G G Liou et al.
Proceedings of the National Academy of Sciences of the United States of America, 98(1), 63-68 (2001-01-03)
RNase E isolated from Escherichia coli is contained in a multicomponent "degradosome" complex with other proteins implicated in RNA decay. Earlier work has shown that the C-terminal region of RNase E is a scaffold for the binding of degradosome components
Elinne Becket et al.
Journal of bacteriology, 194(20), 5613-5620 (2012-08-21)
Polynucleotide phosphorylase (PNP) plays a central role in RNA degradation, generating a pool of ribonucleoside diphosphates (rNDPs) that can be converted to deoxyribonucleoside diphosphates (dNDPs) by ribonucleotide reductase. We report here that spontaneous mutations resulting from replication errors, which are
Martín Vargas-Suárez et al.
Biochimie, 95(2), 400-409 (2012-10-31)
RNA-binding proteins (RNPs) participate in diverse processes of mRNA metabolism, and phosphorylation changes their binding properties. In spinach chloroplasts, 24RNP and 28RNP are associated with polynucleotide posphorylase forming a complex on charge of pre-mRNA 3'-end maturation. Here, we tested the
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