P7280
Poly-ᴅ-Lysine Hydrobromide
synthetic, mol wt 30,000-70,000, powder, γ-irradiated, suitable for cell culture, BioXtra
Synonym(s):
PDL
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About This Item
Linear Formula:
D-Lys-(D-Lys)n-D-Lys · xHBr
CAS Number:
MDL number:
UNSPSC Code:
12352202
PubChem Substance ID:
NACRES:
NA.75
Recommended Products
product name
Poly-D-lysine hydrobromide, average mol wt 30,000-70,000, lyophilized powder, γ-irradiated, BioReagent, suitable for cell culture
biological source
synthetic (organic)
Quality Level
sterility
γ-irradiated
product line
BioReagent
BioXtra
form
lyophilized powder
mol wt
average mol wt 30,000-70,000
packaging
pkg of 5 X 5 mg
pkg of 5 mg
concentration
0.016—0.032 mmol lysine
technique(s)
cell culture | mammalian: suitable
surface coverage
4 μg/cm2
solubility
H2O: soluble 50 mg/mL, clear, colorless
shipped in
ambient
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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General description
Poly-D-Lysine Hydrobromide (PDL), a positively charged polymer consisting of lysine residues, where each lysine unit is associated with a hydrobromide molecule. This hydrobromide molecule gives the poly-D-lysine a unique characteristic, enabling it to form crystals and making it easily soluble in water-based solutions.
Application
Poly d lysine hydrobromide coating has been used:
- In coating tissue culture plate wells and coverslips for immunofluorescence microscopy of primary neuronal culture to study neurological disorders associated with Zika virus infection.
- To coat the coverslips for enhancing the attachment and proliferation of the myenteric cells isolated from the rat intestines.
- In preparing surface of coverslips for cell attachment for studying the myenteric plexus of rat’s small intestine.
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.
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.
Features and Benefits
Sterilized using γ-irradiation
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 30,000-70,000 and is cell culture tested and gamma-irradiated. 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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