P7890
Poly-L-lysine hydrobromide
mol wt 15,000-30,000 by viscosity
Synonym(s):
L-Lysine homopolymer hydrobromide
Sign Into View Organizational & Contract Pricing
All Photos(4)
About This Item
CAS Number:
MDL number:
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.26
Recommended Products
form
powder
mol wt
15,000-30,000 by viscosity
color
white to off-white
application(s)
cell analysis
storage temp.
−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
Looking for similar products? Visit Product Comparison Guide
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.
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 15,000-30,000. 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.
Analysis Note
Molecular weight based on viscosity and was also assayed by MALLS.
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’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Customers Also Viewed
Jiro Mitobe et al.
PLoS neglected tropical diseases, 11(7), e0005728-e0005728 (2017-07-21)
Few live attenuated vaccines protect against multiple serotypes of bacterial pathogen because host serotype-specific immune responses are limited to the serotype present in the vaccine strain. Here, immunization with a mutant of Shigella flexneri 2a protected guinea pigs against subsequent
Ning Zhang et al.
Small (Weinheim an der Bergstrasse, Germany), 12(43), 5936-5943 (2016-09-14)
Tumor-responsive nanocarriers are highly valuable and demanded for smart drug delivery particularly in the field of photodynamic therapy (PDT), where a quick release of photosensitizers in tumors is preferred. Herein, it is demonstrated that protein-based nanospheres, prepared by the electrostatic
Shuai Xue et al.
Molecular therapy : the journal of the American Society of Gene Therapy, 25(2), 443-455 (2017-02-06)
Hepatogenous diabetes is a complex disease that is typified by the simultaneous presence of type 2 diabetes and many forms of liver disease. The chief pathogenic determinant in this pathophysiological network is insulin resistance (IR), an asymptomatic disease state in
Rui R Costa et al.
Acta biomaterialia, 87, 108-117 (2019-01-22)
We describe biomimetic adhesives inspired by the marine glues fabricated by the sandcastle worm. The formation of stable polyelectrolyte complexes between poly-L-lysine (PLL) and glycosaminoglycans (GAGs) with different sulfation degree - heparin (HEP), chondroitin sulfate (CS) and hyaluronic acid (HA)
Dendritic cell-targeted protein vaccines: a novel approach to induce T cell immunity.
Trumpfheller C, Longhi MP, et al.
J. Int. Med., 271(2), 183-192 (2011)
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service