04942078001
Roche
Dispase® II (neutral protease, grade II)
lyophilized, from bacterial, Roche, pkg of 5 × 1 g
Sinonimo/i:
dissociating enzyme, neutral protease, tissue dissociating
About This Item
Prodotti consigliati
Origine biologica
bacterial
Livello qualitativo
Sterilità
non-sterile
Forma fisica
lyophilized
Attività specifica
≥0.8 units/mg protein (37 °C, casein as substrate, pH 7.5)
Confezionamento
pkg of 5 × 1 g
Produttore/marchio commerciale
Roche
pH ottimale
6.0-8.5
applicazioni
sample preparation
Categorie correlate
Descrizione generale
Specificità
Applicazioni
Caratteristiche e vantaggi
- Rapid, effective, yet gentle agent that liberates cells with minimal cell damage
- Maintains cell membrane integrity
- Non-mammalian source - free of mycoplasma and animal virus contamination
- Extremely stable to influences of temperature, pH, and interference by serum components
- Easily inactivated by chelating agents or by dilution
- Delivers higher activity and convenience
Definizione di unità
A practical comparison of Roche units of Dispase® II with those cited in the Japanese literature (where Dispase® concentrations of 1,000 to 2,000 units/ml are not uncommon) suggests that one Roche unit equals approximately 600 Japanese units of dispase.
One unit of Roche Applied Science Dispase® equals 181 protease units (PU) measured as release of amino acids equivalent to 1 μg tyrosine per min and ml at pH 7.5 and +37 °C.
Nota sulla preparazione
Inhibitors: EDTA, EGTA, Hg2+, other heavy metals. Dispase is not inhibited by serum.
Working concentration: 0.6 to 2.4 U/ml
Working solution: Preparation of stock and working solutions:
To produce a 10 mg/ml stock solution, dissolve the lyophilized Dispase® II enzyme in HEPES-buffered saline (50 mM HEPES/KOH pH 7.4, 150 mM NaCl). To produce the working solution, dilute the above stock solution with the culture medium for the isolated cells, at a final concentration of 0.6 to 2.4 U/ml. Note that concentrations higher than 2.4 U/ml are not recommended. For best results, filter the working solution using a 0.22 μm filter membrane.
Storage conditions (working solution): -15 to -25 °C
The reconstituted stock solution is stable at 2 to 8 °C for 2 weeks. For storage up to 2 months the stock solution should be frozen in aliquots. Avoid repeated freezing and thawing! The working solution diluted with PBS is stable at 2 to 8 °C for 3 days.
Stoccaggio e stabilità
Altre note
Note legali
Avvertenze
Danger
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Organi bersaglio
Respiratory system
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
does not flash
Punto d’infiammabilità (°C)
does not flash
Certificati d'analisi (COA)
Cerca il Certificati d'analisi (COA) digitando il numero di lotto/batch corrispondente. I numeri di lotto o di batch sono stampati sull'etichetta dei prodotti dopo la parola ‘Lotto’ o ‘Batch’.
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