A6132
Apyrase from potatoes
ATPase ≥3.0 units/mg protein, lyophilized powder
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Adenosine 5′-diphosphatase, Adenosine 5′-triphosphatase
Recommended Products
biological source
potato
Quality Level
type
Grade I
form
lyophilized powder
ATPase activity
≥3.0 units/mg protein
composition
Protein, 30-60%
storage temp.
−20°C
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Application
Apyrase is used to hydrolyze nucleoside triphosphates and diphosphates. Apyrase, from Sigma, has been used in inhibition studies of platelet-aggregation .
At least two isoenzymes are found in different varieties of S. tuberosum: one with a high ATPase/ADPase ratio (∼10) and another with a low ratio (∼1).
Reaction: ATP → ADP+Pi → AMP+2Pi.
Reaction: ATP → ADP+Pi → AMP+2Pi.
Biochem/physiol Actions
Apyrase is found in all eukaryotes and some prokaryotes. Apyrase, from potato, has a crucial role in regulating growth and development. Apyrase is involved in the inactivation of synaptic ATP as a neurotransmitter following nerve stimulation and in the inhibition of ADP induced platelet aggregation to prevent thrombosis . Divalent metal ions are required for activity and best activity is observed with calcium ion at 5 mM.
Packaging
Sold on the basis of ATPase units.
Other Notes
Mixture of high and low ratio isoenzymes.
Unit Definition
One unit will liberate 1.0 micromole of inorganic phosphorus per minute at pH 6.5 at 30 °C
Physical form
Partially purified, lyophilized powder containing potassium succinate
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Certificates of Analysis (COA)
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The Journal of experimental biology, 198(Pt 8), 1809-1815 (1995-08-01)
Kinesin is a motor protein that converts chemical energy derived from ATP hydrolysis into mechanical work to transport cellular components along microtubules. We studied the properties of ATP-dependent microtubule-kinesin sliding with two different in vitro assay systems. In one assay
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Rhamnogalacturonan I (RG-I) is a major plant cell wall pectic polysaccharide defined by its repeating disaccharide backbone structure of [4)-α-D-GalA-(1,2)-α-L-Rha-(1,]. A family of RG-I:Rhamnosyltransferases (RRT) has previously been identified, but synthesis of the RG-I backbone has not been demonstrated in
The Journal of cell biology, 103(4), 1279-1288 (1986-10-01)
We have tried to specify a widespread hypothesis on the requirement of ATP for exocytosis (membrane fusion). With Paramecium tetraurelia cells, synchronously (approximately 1 s) exocytosing trichocysts, ATP pools have been measured in different strains, including wild type cells, "non-discharge"
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