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一般說明
Polynuclotide phosphorlyase in spinach chloroplasts acts as a exonuclease and a poly(A) polymerase.
應用
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.
單位定義
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
儲存類別代碼
12 - Non Combustible Liquids
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
分析證明 (COA)
輸入產品批次/批號來搜索 分析證明 (COA)。在產品’s標籤上找到批次和批號，寫有 ‘Lot’或‘Batch’.。
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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
Ruth Rott et al.
The Journal of biological chemistry, 278(18), 15771-15777 (2003-02-26)
The mechanism of RNA degradation in Escherichia coli involves endonucleolytic cleavage, polyadenylation of the cleavage product by poly(A) polymerase, and exonucleolytic degradation by the exoribonucleases, polynucleotide phosphorylase (PNPase) and RNase II. The poly(A) tails are homogenous, containing only adenosines in
Steven W Hardwick et al.
Open biology, 2(4), 120028-120028 (2012-06-23)
Polynucleotide phosphorylase (PNPase) is an exoribonuclease that cleaves single-stranded RNA substrates with 3'-5' directionality and processive behaviour. Its ring-like, trimeric architecture creates a central channel where phosphorolytic active sites reside. One face of the ring is decorated with RNA-binding K-homology
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
Yulia Redko et al.
Nucleic acids research, 41(1), 288-301 (2012-10-25)
Protein complexes directing messenger RNA (mRNA) degradation are present in all kingdoms of life. In Escherichia coli, mRNA degradation is performed by an RNA degradosome organized by the major ribonuclease RNase E. In bacteria lacking RNase E, the existence of
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