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P6403

Sigma-Aldrich

Poly-D-lysine hydrobromide

suitable for cell culture, Mol wt 4,000-15,000

Synonym(s):

D-Lysine homopolymer hydrobromide

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About This Item

Linear Formula:
D-Lys-(D-Lys)n-D-Lys · xHBr
CAS Number:
27964-99-4
MDL number:
MFCD00131934
UNSPSC Code:
12352209
PubChem Substance ID:
24898763
NACRES:
NA.26

product name

Poly-D-lysine hydrobromide, mol wt 4,000-15,000

form

powder or solid

Quality Level

200

mol wt

4,000-15,000

technique(s)

cell culture | mammalian: suitable

color

white to light yellow

storage temp.

−20°C

SMILES string

O=C(C)[C@@](NC)([H])CCCCN.[Br]

InChI

1S/C6H14N2O2.BrH/c7-4-2-1-3-5(8)6(9)10;/h5H,1-4,7-8H2,(H,9,10);1H

InChI key

MEXAGTSTSPYCEP-UHFFFAOYSA-N

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Application

Poly-D-lysine polymers can be used in preparing surfaces for cell attachment. The D-lysine polymers can also be used with cells that digest poly-L-lysine polymers and cause an excessive uptake of L-lysine.

This product is recommended as a cell culture substratum when using 0.5 - 1.0 mL of a 0.1 mg/mL solution to coat 25 cm2. Lower molecular weight versions of the product are less viscous, but high more molecular weight versions provide more attachment sites per molecule.

Biochem/physiol Actions

Poly-D-lysine (PDL) hydrobromide 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. After absorption to the culture surface, poly-D-lysine increases the number of positively charged cell binding sites.

Components

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

Caution

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

Preparation Note

This product has a molecular weight of 4,000-15,000. To remove the HBr, dissolve this product in a neutral buffer and dialyze to remove the salts. 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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Allyson E Sgro et al.
Journal of neuroscience methods, 198(2), 230-235 (2011-04-26)
Generating microislands of culture substrate on coverslips by spray application of poly-d lysine is a commonly used method for culturing isolated neurons that form self (autaptic) synapses. This preparation has multiple advantages for studying synaptic transmission in isolation; however, generating
Munehiro Yamaguchi et al.
Langmuir : the ACS journal of surfaces and colloids, 27(20), 12521-12532 (2011-09-09)
Micropatterning techniques have become increasingly important in cellular biology. Cell patterning is achieved by various methods. Photolithography is one of the most popular methods, and several light sources (e.g., excimer lasers and mercury lamps) are used for that purpose. Vacuum
Kyungtae Kang et al.
Biomaterials, 32(27), 6374-6380 (2011-06-10)
Chemical surface modification of neuron-surface interfaces is essential for the development of biologically active and functional neural interfaces. Different types of surface modification schemes are required to derivatize either electrode or insulator surfaces, which limits the surface chemistry based neural
Yong Hee Kim et al.
Journal of neuroscience methods, 202(1), 38-44 (2011-09-13)
We have prepared the poly-d-lysine (PDL) bound surfaces for neuron cell culture by covalent binding between the poly-d-Lysine and substrates and investigated neuronal cell adhesion properties and cell growth morphology. The number of neuronal cell and the number of neurite
Zhou Xu et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 25(10), 3426-3435 (2011-06-24)
Misfolding of the prion protein (PrP) is the central feature of prion diseases. The conversion of the normal α-helical PrP(C) into a pathological β-enriched PrP(Sc) constitutes an early event in the infectious process. Several hypotheses, involving different regions of the
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