P2636

Sigma-Aldrich

Poly-L-lysine hydrobromide

mol wt 30,000-70,000

Número de CAS:
Número MDL:
eCl@ss:
32160406
ID de la sustancia en PubChem:
NACRES:
NA.26

formulario

powder

Nivel de calidad

300

mol peso

30,000-70,000

aplicaciones

bioconjugation: suitable
cell culture | mammalian: suitable

color

white

temp. de almacenamiento

−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

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Categorías relacionadas

Envase

25, 100, 500 mg in poly bottle
1 g in poly bottle

Aplicación

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.

Acciones bioquímicas o fisiológicas

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.

Componentes

Poly-L-lysine is a positively charged amino acid polymer with approximately one HBr per lysine residue. The hydrobromide allows the poly-L-lysine to be in a crystalline form soluble in water. A small amount of product may be found in the beta structure because the HBr interferes with hydrogen bonding between amino and either the carboxyl groups or N or O containing moieties.

Precaución

Sterile solutions are stable for up to 2 years when stored at 2-8°C. It should be stored desiccated at -20°C.

Nota de preparación

This product has a molecular weight of 30,000-70,000. 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.

Nota de análisis

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

storage_class_code

11 - Combustible Solids

WGK Alemania

WGK 3

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)

Certificado de Análisis

Certificado de origen

Rachel V Stadler et al.
Molecular biology of the cell, 28(14), 1912-1923 (2017-02-18)
Apicomplexa is a large phylum of intracellular parasites that are notable for the diseases they cause, including toxoplasmosis, malaria, and cryptosporidiosis. A conserved motile system is critical to their life cycles and drives directional gliding motility between cells, as well...
Fernando J Bustos et al.
Journal of cellular physiology, 232(12), 3677-3692 (2017-02-06)
Dendrite arbor growth, or dendritogenesis, is choreographed by a diverse set of cues, including the NMDA receptor (NMDAR) subunits NR2A and NR2B. While NR1NR2B receptors are predominantly expressed in immature neurons and promote plasticity, NR1NR2A receptors are mainly expressed in...
Jumana Alhamdi et al.
Materials (Basel, Switzerland), 11(9) (2018-09-16)
Recently, the benefit of step-wise sequential delivery of fibroblast growth factor-2 (FGF-2) and bone morphogenetic protein-2 from a bioinspired apatite drug delivery system on mouse calvarial bone repair was demonstrated. The thicknesses of the nanostructured poly-l-Lysine/poly-l-Glutamic acid polyelectrolyte multilayer (PEM)...
Bas van Bommel et al.
The EMBO journal, 38(15), e101183-e101183 (2019-07-04)
Organelle positioning within neurites is required for proper neuronal function. In dendrites, with their complex cytoskeletal organization, transport of organelles is guided by local specializations of the microtubule and actin cytoskeleton, and by coordinated activity of different motor proteins. Here...
Ki-Young Chang et al.
Nature communications, 5, 4057-4057 (2014-06-05)
Receptor tyrosine kinases (RTKs) are a family of cell-surface receptors that have a key role in regulating critical cellular processes. Here, to understand and precisely control RTK signalling, we report the development of a genetically encoded, photoactivatable Trk (tropomyosin-related kinase)...
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Kanjiro Miyata (The University of Tokyo, Japan) provides insights on the rational design of polymeric materials for “smart” oligonucleotide delivery.
Más información
Humankind has utilized protein materials throughout its existence, starting with the use of materials such as wool and silk for warmth and protection from the elements and continuing with the use of recombinant DNA techniques to synthesize proteins with unique and useful properties.
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