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P7890

Sigma-Aldrich

Poli-L-lisina

mol wt 15,000-30,000 by viscosity

Sinonimo/i:

L-Lysine homopolymer hydrobromide

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About This Item

Numero CAS:
25988-63-0
Numero MDL:
MFCD00237230
Codice UNSPSC:
12352209
eCl@ss:
32160406
ID PubChem:
24898886
NACRES:
NA.26

Forma fisica

powder

Livello qualitativo

200

PM

15,000-30,000 by viscosity

Colore

white to off-white

applicazioni

cell analysis

Temperatura di conservazione

−20°C

Stringa SMILE

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
WBSCNDJQPKSPII-KKUMJFAQSA-N

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Categorie correlate

Applicazioni

Poly-L-lysine polymers can be used in promoting cell adhesion to solid substrates, conjugation to methotrexate for increased drug transport, microencapsulation of islets, cell microencapsulation technology, microarray glass slide coating, and chromosomal preparations. Lower molecular weight poly-L-lysine (30,000-70,000) is less viscuous in solution, but higher molecular weight versions provide more attachment sites per molecule.

Azioni biochim/fisiol

Poly-L-lysine is a nonspecific attachment factor for cells useful in promoting cell adhesion to solid substrates by enhancing electrostatic interaction between negatively charged ions of the cell membrane and the culture surface. When it is absorbed to the cell culture surface, poly-L-lysine functions to increase the number of positively charged sites available for cell binding. With cells that can digest poly-L-lysine, poly-D-lysine should be used as the attachment factor.

Componenti

La poli-L-lisina è un polimero aminoacidico con carica positiva con circa un HBr per residuo di lisina. Il bromidrato consente alla poli-L-lisina di raggiungere la forma cristallina solubile in acqua. Una piccola quantità del prodotto può essere rinvenuta nella struttura beta perché il HBr interferisce con il legame idrogeno tra i gruppi amminici e i gruppi carbossilici o le frazioni che contengono N o O.

Avvertenza

Le soluzioni sterili sono stabili per un massimo di due anni se conservate a 2-8 °C. Il prodotto deve essere conservato essiccato a -20 °C.

Nota sulla preparazione

This product has a molecular weight of 15,000-30,000. To remove the HBr, dissolve this product in a neutral buffer and dialyze to remove the salts. None of the poly-L-lysine products have been exposed to trifluoroacetic acid and are dialyzed to remove any monomers, dimmers, or trimers, confirmed by thin layer chromatography. In general, to use this product as an attachment factor, add 50 mL of sterile tissue culture grade water to 5 mg of poly-lysine, and aseptically coat the surface with 1 mL per 25 cm2 of solution. After 5 minutes, remove the solution through aspiration and thoroughly rinse the surface. Let dry for two hours before introducing cells and medium.

Risultati analitici

Molecular weight based on viscosity and was also assayed by MALLS.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)

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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