10109045001
Roche
Pyruvate Kinase (PK)
from rabbit muscle
Sinônimo(s):
PK
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About This Item
Preço e disponibilidade não estão disponíveis no momento.
Produtos recomendados
fonte biológica
rabbit muscle
Nível de qualidade
Formulário
solution
atividade específica
~200 units/mg protein (At 25 °C with PEP as the substrate.)
embalagem
pkg of 1 mL (10 mg)
fabricante/nome comercial
Roche
pH ideal
7.0-7.5
Condições de expedição
dry ice
temperatura de armazenamento
−20°C (−15°C to −25°C)
Categorias relacionadas
Descrição geral
Pyruvate kinase has a molar mass of 237,000 and exists as a tetramer. Each polypeptide chain of this tetramer has a molar mass of 57,200. The enzyme contains two identical catalytic particles called protomers. Each of these protomers contains two polypeptide chains. Each protomer contains one site each for Mn2+ and phosphoenolpyruvate.[1]
Especificidade
Specific activity: Approximately 200 U/mg at +25°C with PEP as the substrate.
Aplicação
Pyruvate Kinase (PK) has been used in the kinase assay.[4]
Ações bioquímicas/fisiológicas
Pyruvate kinase catalyzes the irreversible conversion of P-enolpyruvate and ADP to pyruvate and ATP with the utilization of a proton. The first step is the transfer of phosphate group from P-enolpyruvate to ADP with the formation of bound enolate of pyruvate and ATP. In the second step, a proton is added to enolate to generate the keto form of pyruvate. The enzyme also exhibits other activities, such as ATP- and bicarbonate-dependent ATPase, phosphorylation of fluoride and hydroxylamine, ATP-dependent phosphorylation of glycolate, and decarboxylation of oxaloacetate.[5]
Qualidade
Contaminants: <0.001% GK, <0.002% HK, “NADH oxidase”, and ATPase, each, <0.01% enolase, LDH, and myokinase, each.
forma física
Solution in 50% glycerol (v/v), pH approximately 6
Nota de preparo
Activator: PK requires Mg2+ (or Mn2+, Co2+) and K+ (or NH4+, Rb+) for full activity.
Outras notas
For life science research only. Not for use in diagnostic procedures.
Código de classe de armazenamento
12 - Non Combustible Liquids
Classe de risco de água (WGK)
WGK 1
Ponto de fulgor (°F)
No data available
Ponto de fulgor (°C)
No data available
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