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P4832

Sigma-Aldrich

Poly-L-lysine solution

mol wt 150,000-300,000, 0.01%, sterile-filtered, BioReagent, suitable for cell culture

Synonym(s):
PLL Solution
CAS Number:
MDL number:
eCl@ss:
32160406
NACRES:
NA.75

Quality Level

sterility

sterile-filtered

product line

BioReagent

form

solution

mol wt

150,000-300,000

packaging

pkg of 50 mL

concentration

0.01%

application(s)

cell culture | mammalian: suitable

impurities

endotoxin, tested

solubility

water: soluble

shipped in

ambient

storage temp.

2-8°C

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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Application

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.

Biochem/physiol Actions

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.

Components

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.

Preparation Note

This product is supplied as a 0.01% sterile filtered solution in water, using a molecular weight of 150 - 300 kDa. Coating slides with this solution should be followed with a 5 minute incubation and drying the slides at room temperature. Coated slides will be stable for one year if protected from dust.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Huizhong Feng et al.
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Ferroptosis is a type of regulated cell death driven by the iron-dependent accumulation of oxidized polyunsaturated fatty acid-containing phospholipids. There is no reliable way to selectively stain ferroptotic cells in tissue sections to characterize the extent of ferroptosis in animal...
Renato G S Chirivi et al.
Cellular & molecular immunology, 18(6), 1528-1544 (2020-03-24)
Excessive release of neutrophil extracellular traps (NETs) is associated with disease severity and contributes to tissue injury, followed by severe organ damage. Pharmacological or genetic inhibition of NET release reduces pathology in multiple inflammatory disease models, indicating that NETs are...
Caitlin N Spaulding et al.
eLife, 7 (2018-01-19)
Uropathogenic E. coli (UPEC), which cause urinary tract infections (UTI), utilize type 1 pili, a chaperone usher pathway (CUP) pilus, to cause UTI and colonize the gut. The pilus rod, comprised of repeating FimA subunits, provides a structural scaffold for...
Hermann C Altmeppen et al.
Molecular neurodegeneration, 6, 36-36 (2011-05-31)
The cellular prion protein (PrPC) fulfils several yet not completely understood physiological functions. Apart from these functions, it has the ability to misfold into a pathogenic scrapie form (PrPSc) leading to fatal transmissible spongiform encephalopathies. Proteolytic processing of PrPC generates...
Lesley T MacNeil et al.
Nature neuroscience, 12(2), 150-155 (2009-01-27)
The UNC-5 receptor mediates axon repulsion from UNC-6/netrin through UNC-40 dependent (UNC-5 + UNC-40) and independent (UNC-5 alone) signaling pathways. It has been shown that UNC-40-dependent signaling is required for long-range repulsion of UNC-6/netrin; however, the mechanisms used to regulate...

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