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10108626001

Roche

Poly(A)

lyophilized, suitable for PCR, pkg of 100 mg

Synonym(s):

Poly(A), Polyadenylic acid

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About This Item

UNSPSC Code:
41105600

description

Polyadenylic acid

Quality Level

100

form

lyophilized

mol wt

700-3500 kDa

packaging

pkg of 100 mg

manufacturer/tradename

Roche

concentration

0.5 mg/mL (Working concentration)

technique(s)

PCR: suitable

color

white

solubility

water: soluble

absorbance ratio

A290/260 nm 0.03-0.05
A280/260 nm 0.28-0.32
A250/260 nm 0.86-0.90

storage temp.

2-8°C

General description

Poly(A) is used as a carrier for quantitative precipitation of DNA and RNA.

Application

Poly(A) has been used for droplet digital PCR (ddPCR) assay.
Polyadenylic acid (Poly(A)) to inhibit Exo1′s exonuclease activity. It has also been used as a carrier to resuspend lyophilized gBlocks.

Biochem/physiol Actions

Polyadenylic acid (Poly(A)) tails present at 3′ end are produced in the cell nucleus. It contains ~250 nucleotides in mammalian cells. Poly(A) regulates mRNA decay and the initiation of translation. Cytoplasmic poly(A) extension modulates translation.

Quality

Typical analysis:
2.3μmol/mg Poly(A) (from absorbance) in relation to one mononucleotide unit. Chromatographically homogeneous.
Absorbance determination A250/A260, A280/A260, A290/A260

Sequence

Chain Length 2.100 to 10.000 nucleotides

Unit Definition

1 A260 unit corresponds to 40 μg ssRNA.

Physical form

Lyophilizate, potassium salt

Preparation Note

Working concentration: 0.5 mg/ml
A concentration of 0.5 mg/ml is recommended.
Working solution: 0.5 mg/ml is recommended.

Other Notes

For life science research only. Not for use in diagnostic procedures.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Poly (A) tail length is controlled by the nuclear poly (A)-binding protein regulating the interaction between poly (A) polymerase and the cleavage and polyadenylation specificity factor
Kuhn U, et al.
The Journal of Biological Chemistry, 284(34), 22803-22814 (2009)
Yuichiro Miyaoka et al.
Scientific reports, 6, 23549-23549 (2016-04-01)
Precise genome-editing relies on the repair of sequence-specific nuclease-induced DNA nicking or double-strand breaks (DSBs) by homology-directed repair (HDR). However, nonhomologous end-joining (NHEJ), an error-prone repair, acts concurrently, reducing the rate of high-fidelity edits. The identification of genome-editing conditions that
Poly (ADP-ribose)-binding promotes Exo1 damage recruitment and suppresses its nuclease activities
Cheruiyot A, et al.
DNA Repair, 35, 106-115 (2015)
Kengo Watanabe et al.
Nature communications, 12(1), 1353-1353 (2021-03-03)
Cells are under threat of osmotic perturbation; cell volume maintenance is critical in cerebral edema, inflammation and aging, in which prominent changes in intracellular or extracellular osmolality emerge. After osmotic stress-enforced cell swelling or shrinkage, the cells regulate intracellular osmolality
Peiguo Yang et al.
Cell, 181(2), 325-345 (2020-04-18)
The mechanisms underlying ribonucleoprotein (RNP) granule assembly, including the basis for establishing and maintaining RNP granules with distinct composition, are unknown. One prominent type of RNP granule is the stress granule (SG), a dynamic and reversible cytoplasmic assembly formed in

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