Inorganic Pyrophosphatase, yeast
Inorganic Pyrophosphatase, yeast

The Pyrophosphatase, inorganic (PPase) catalyzes the hydrolysis of inorganic pyrophosphate to two orthophosphates
 
Name Cat# Size Concentration Price Qty
Inorganic Pyrophosphatase, yeast
PI-100
25 units
100 U/ml
$96.00
Inorganic Pyrophosphatase, yeast
PI-200
100 units
100 U/ml
$288.00
Inorganic Pyrophosphatase, yeast
PI-OEM
Any Size
please inquire

Description:
The Pyrophosphatase, inorganic (PPase) catalyzes the hydrolysis of inorganic pyrophosphate to two orthophosphates. The enzyme requires a divalent metal cation, with Mg2+ conferring the highest activity.

Application:
- High yield synthesis of RNA by in vitro transcription(1,2)
- DNA polymerization reactions: preventing accumulation of pyrophosphate(3, 4)
- Removal of contaminant PPi in reagents used for SNP genotyping by methods based on the detection of pyrophosphate(5)

Source:
E. coli cells with a cloned ppa gene of Sacharomyces cerevisiae.

Unit Definition:
One unit is the amount of enzyme that will generate 1 µmol of phosphate per minute from inorganic pyrophosphate under standard reaction conditions (a 10 minute reaction at 25°C in 100 mM Tris-HCL, [pH 7.2], 2 mM MgCl2 and 2 mM PPi in a reaction volume of 0.5 ml).

Storage Conditions:
20 mM Tris-HCl
100 mM KCl
1 mM Dithiothreitol
0.1 mM EDTA
50% Glycerol
pH 8.0 @ 25°C

Recommended Storage Condition: -20°C

References:
1. Cooperman, B.S., The mechanism of action of yeast inorganic pyrophosphatase, Meth. Enzymol., 87, 526-548, 1982.
2. Cunningham, P.R. and Ofengand, J., Use of inorganic pyrophostase to improve the yield of in vitro transcription reactions catalyzed by T7 RNA polymerase, Biotechniques, 9, 713-714, 1990.
3. Tabor, S., Richardson, C.C., DNA sequence analysis with a modified bacteriophage T7 DNA polymerase. Effect of pyrophosphorolysis and metal ions, J. Biol. Chem., 265, 8322-8328, 1990.
4. Dean, B.F., et al., Rapid amplification of plasmid and phage DNA using phi29 DNA polymerase and multiply-primed Rolling Circle amplification, Genome Res., 11, 1095-1099, 2001.
5. Zhou, G.H., et al., Quantitative detection of single nucleotide polymorphisms for a pooled sample by a bioluminometric assay coupled with modified primer extension reactions (BAMPER), Nucleic Acids Res., 29, E93, 2001.



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