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Poly-L-lysine solution

0.01%, sterile-filtered, BioReagent, suitable for cell culture

PLL Solution
CAS Number:
MDL number:

Quality Level



product line





pkg of 50 mL




cell culture | mammalian: suitable


endotoxin, tested

shipped in


storage temp.




InChI key


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  • Poly-L-lysine coated glass coverslips have been used for mounting samples for scanning electron microscopy.
  • Poly-L-lysine coated wells were used for trapping of PC-12 cells on electrodes.
  • Poly-L-lysine-coated borosilicate glass slides were used for the seeding of viral vector-transduced cells.
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.


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. 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



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is the concentration of Product P4707, Poly-L-Lysine solution?

    This product is supplied as a 0.01% w/v solution.

  4. What molecular weight Poly-L-Lysine product should I choose?

    The lower molecular weight poly-L-lysine (30-70 kDa) is easier to use because it is less viscous in solution, but the higher molecular weight poly-L-lysine (>300 kDa) provides more attachment sites per molecule. The mid-range product has a molecular weight range of 70-150 kDa.

  5. Should I use Poly-L-Lysine or Poly-D-Lysine?

    Certain cells secrete proteases, which can digest poly-L-lysine. For those cell types, poly-D-lysine should be used.

  6. What is the protocol for using Product P4707, Poly-L-Lysine solution, to coat slides?

    For coating slides with poly-L-lysine, in general, it is recommended to use a 0.01% (w/v) solution. After a 5 minute incubation, the excess solution is removed and the slides are dried at room temperature or in an oven at gentle heat.

  7. What is the protocol for using Product P4707, Poly-L-Lysine solution, to coat tissue culture plasticware?

    A solution of 0.1 mg/mL is prepared; 0.5 mL of that solution is aseptically transferred to a non-tissue culture treated 25 square cm flask. The flask is gently rocked to evenly coat the surface. After five minutes, the excess solution is removed and the surface is thoroughly rinsed with sterile water and allowed to dry for several hours.

  8. How can I sterilize slides coated with Product P4707, Poly-L-Lysine solution?

    Poly-L-Lysine coated slides can be exposed to UV light overnight for sterilization.

  9. How should I dilute Product P4707, Poly-L-Lysine solution?

    For coating slides with poly-L-lysine, in general, it is recommended to use a 0.01% (w/v) solution.  However, if your protocol requires a more dilute solution, you can add sterile water or sterile buffer like Phosphate Buffered Saline.

  10. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  11. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

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Poly-L-Lysine Cell Attachment Protocol

Poly-L-Lysine Cell Attachment Protocol

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