P7768
Pyruvate Kinase from rabbit muscle
Type VII, buffered aqueous glycerol solution, 350-600 units/mg protein
Synonym(s):
ATP:pyruvate 2-O-phosphotransferase, PK
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About This Item
CAS Number:
MDL number:
UNSPSC Code:
12352204
eCl@ss:
32160410
NACRES:
NA.54
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type
Type VII
Quality Level
form
buffered aqueous glycerol solution
specific activity
350-600 units/mg protein
mol wt
237 kDa
concentration
2.0-20.0 mg/mL
foreign activity
lactic dehydrogenase and creatine phosphokinase ≤0.01%
phosphoglucomutase and myokinase ≤0.05%
storage temp.
2-8°C
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Application
Pyruvate kinase from Sigma has been used in the preparation of cell free extract from BL21 CP strain of E. coli culture for highly productive cell-free protein expression. The enzyme has been used to assay the pyruvate kinase activity by incubating with eluted DAPk (Death-associated protein kinase), a serine/threonine kinase that binds and activates pyruvate kinase.
Pyruvate kinase is an enzyme involved in glycolysis and is involved in gluconeogenesis. Product P7768 is from rabbit muscle and is provided in a buffered aqueous glycerol solution and has been used in PGM enzyme assays to determine phosphoglycerate mutase activity. Pyruvate kinase is also used to study pyruvate kinase (PK) deficiency.
Biochem/physiol Actions
Molecular Weight: 237 kDa and exists as a tetramer of four equal subunits of molecular weight 57 kDa.
Isoelectric Point: 7.6
Optimal pH: ∼7.5
Optimal Temperature: 25°C
ΕA280 = 0.54 for 1 mg(p)/ml, 1 cm path
Reported KM values are ATP (0.86 mM), pyruvate (10 mM), ADP (0.3 mM), and PEP (0.07 mM) in Tris buffer at pH 7.4 and 30 °C. Pyruvate kinase is highly specific for phosphoenolpyruvate, but can utilize other dinucleotide triphosphates as substrates in place of ATP including GTP, ITP, dATP, UTP, and CTP.
Isoelectric Point: 7.6
Optimal pH: ∼7.5
Optimal Temperature: 25°C
ΕA280 = 0.54 for 1 mg(p)/ml, 1 cm path
Reported KM values are ATP (0.86 mM), pyruvate (10 mM), ADP (0.3 mM), and PEP (0.07 mM) in Tris buffer at pH 7.4 and 30 °C. Pyruvate kinase is highly specific for phosphoenolpyruvate, but can utilize other dinucleotide triphosphates as substrates in place of ATP including GTP, ITP, dATP, UTP, and CTP.
Pyruvate kinase catalyzes the transfer of a phosphate group from phosphoenolpyruvate (PEP) to ADP. This transfer yields one molecule of pyruvate and one molecule of ATP. Molecular Weight: 237 kDa and exists as a tetramer of four equal subunits of molecular weight 57 kDa.
Isoelectric Point: 7.6
Optimal pH: ∼7.5
Isoelectric Point: 7.6
Optimal pH: ∼7.5
Unit Definition
One unit will convert 1.0 μmole of phospho(enol)pyruvate to pyruvate per min at pH 7.6 at 37 °C.
Physical form
Solution in 50% glycerol containing 0.01 M phosphate, pH 7.0
Analysis Note
Protein determined by biuret.
Storage Class
10 - Combustible liquids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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