The technical data sheet for this product states that sterile solutions can be stored at 2–8 °C for up to 2 years. Freezing of the solution is not recommended, and repeated freeze/thaw cycles should be avoided.
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| Größe/SKU | Verfügbarkeit | Preis |
|---|---|---|
25 mg | Warenkorb auf Verfügbarkeit prüfen | € 120,00 |
100 mg | Warenkorb auf Verfügbarkeit prüfen | € 368,00 |
500 mg | Warenkorb auf Verfügbarkeit prüfen | € 1.330,00 |
1 g | Warenkorb auf Verfügbarkeit prüfen | € 2.030,00 |
Über diesen Artikel
Produktname
Poly-L-Lysin -hydrobromid, mol wt 30,000-70,000
form
powder
Quality Segment
mol wt
30,000-70,000
technique(s)
bioconjugation: suitable, cell culture | mammalian: suitable
impurities
<10% water (Karl Fischer)
color
white to faint yellow
solubility
water: 50 mg/mL, clear, colorless to light yellow (50 mg/mL, water, Clear, Colorless to light yellow
)
functional group
amine, carboxylic acid
storage temp.
−20°C
SMILES string
Cl.NCCCCC(N)C(O)=O
InChI
1S/C18H38N6O4/c19-10-4-1-7-13(22)16(25)23-14(8-2-5-11-20)17(26)24-15(18(27)28)9-3-6-12-21/h13-15H,1-12,19-22H2,(H,23,25)(H,24,26)(H,27,28)/t13-,14-,15-/m0/s1
InChI key
WBSCNDJQPKSPII-KKUMJFAQSA-N
General description
Poly-L-Lysin, das aus der natürlich vorkommenden Aminosäure L-Lysin gewonnen wird, ist in verschiedenen Formen erhältlich. Dies ermöglicht eine individuelle Anpassung in Bezug auf das Molekulargewicht und die Form. Als synthetisches, positiv geladenes Polymer ist es in zwei Enantiomeren vorhanden, Poly-D-Lysin und Poly-L-Lysin, die beide ihre einzigartigen Anwendungen haben.
In der Formulierungsforschung erweist sich Poly-L-Lysin als wertvoll bei der Verabreichung von Nukleinsäuren. Seine positive Ladung, die auf dem ε-Amin an seiner Seitenkette bei physiologischem pH zurückzuführen ist, ermöglicht es, Plasmid-DNA effektiv auf der Grundlage der Salzkonzentration zu kondensieren. Poly-L-Lysin scheint für den Gentransport geeignet zu sein, unmodifizierte Versionen wurden jedoch mit einer geringen Transfektionseffizienz und Zytotoxizität in Verbindung gebracht.
Zusammenfassend lässt sich sagen, dass Poly-L-Lysin eine vielseitige Lösung in der Zellkultur- und Formulierungsforschung bietet, die die Zelladhäsion verbessert, den Gentransport ermöglicht und wesentlich zu Fortschritten der Forschung in den Bereichen Biochemie und Zellbiologie beiträgt.
Application
Biochem/physiol Actions
Features and Benefits
- Kann in der Forschung in den Bereichen Metabolomik und Biochemie verwendet werden
- Hochwertige Verbindung, geeignet für verschiedene Forschungsanwendungen
Preparation Note
Analysis Note
Other Notes
Disclaimer
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description mol wt 30,000-70,000 | description mol wt ≥300,000 | description mol wt 70,000-150,000 by viscosity | description mol wt 70,000-150,000, lyophilized powder, γ-irradiated, BioXtra, suitable for cell culture |
| form powder | form powder | form solid | form lyophilized powder |
| functional group carboxylic acid, amine | functional group - | functional group - | functional group - |
| technique(s) cell culture | mammalian: suitable, bioconjugation: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable |
| storage temp. −20°C | storage temp. −20°C | storage temp. −20°C | storage temp. −20°C |
| Quality Level 300 | Quality Level 200 | Quality Level 300 | Quality Level 200 |
| impurities <10% water (Karl Fischer) | impurities - | impurities - | impurities - |
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Lagerklasse
11 - Combustible Solids
WGK
WGK 3
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
PSA (Persönliche Schutzausrüstung)
Eyeshields, Gloves, type N95 (US)
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What is the stability of this product once in solution and frozen in -20 in aliquots? how long can it last without repeated freeze that cycles?
1 answer-
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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What could explain the observed weak pH-dependent fluorescence in buffer solutions of the poly-L-lysine product used in fluorescence studies? The fluorescence appears to originate from the polymer itself rather than a small molecule contaminant, which is unexpected considering the structure of poly-L-lysine. Is there something in the product's preparation that might contribute to this fluorescence?
1 answer-
To the best of our knowledge, the production of P2636 Poly-L-Lysine does not involve any compounds that would be categorized as fluorophores.
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