Date published: 2025-10-2

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Lipopolysaccharide, E. coli O55:B5 (CAS 93572-42-0)

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Alternate Names:
Lipopolysaccharide, E. coli O55:B5 is also known as LPS E. coli O55:B5.
Application:
Lipopolysaccharide, E. coli O55:B5 is a component of the cell wall of Gram-negative bacteria and Specific activator of Toll-like receptor (TLR) 4.
CAS Number:
93572-42-0
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

QUICK LINKS

Lipopolysaccharide, E. coli O55:B5 is a component of the cell wall of the O55:B5 serotype of the Gram-negative bacteria, Escherichia coli. Lipopolysaccharides (LPS) are made up of a hydrophobic lipid, a hydrophilic core polysaccharide chain and a hydrophilic O-antigenic polysaccharide side chain. LPS molecules contribute to the outer integrity of the cell membrane, protect the cell against bile salts and lipophilic antibiotics, and act as endotoxins in animals. LPS induces a strong immune response by binding to the CD14/TLR4/MD2 receptor complex, which promotes the secretion of pro-inflammatory cytokines. LPS is also an exogenous pyrogen. Lipopolysaccharide, E. coli O55:B5 is used to activate toll-like receptor 4 (TLR4) on leukocytes, eliciting inflammatory signaling in isolated cells. Lipopolysaccharide, E. coli O55:B5 includes three regions, the O-antigenic polysaccharide chain, the core oligosaccharide, and lipid A. Lipopolysaccharide, E. coli O55:B5 stimulates the activity of inducible nitric oxide synthase. Lipopolysaccharide, E. coli O55:B5 induces apoptosis in mouse thymus and swine lymphocytes.


Lipopolysaccharide, E. coli O55:B5 (CAS 93572-42-0) References

  1. Endotoxin-induced lung inflammation is independent of the complement membrane attack complex.  |  Brauer, RB., et al. 2000. Infect Immun. 68: 1626-32. PMID: 10678982
  2. Postovulatory effect of intravenous administration of lipopolysaccharide (E. coli, O55:B5) on the contractile activity of the oviduct, ova transport, binding of accessory spermatozoa to the zona pellucida and embryo development in sows.  |  Mwanza, AM., et al. 2002. Reprod Domest Anim. 37: 269-74. PMID: 12354178
  3. Lipopolysaccharide from Rhodobacter sphaeroides is an agonist in equine cells.  |  Lohmann, KL., et al. 2003. J Endotoxin Res. 9: 33-7. PMID: 12691616
  4. Aggregation behavior and size of lipopolysaccharide from Escherichia coli O55:B5.  |  Bergstrand, A., et al. 2006. Colloids Surf B Biointerfaces. 53: 9-14. PMID: 16934960
  5. Specific Lipopolysaccharide Serotypes Induce Differential Maternal and Neonatal Inflammatory Responses in a Murine Model of Preterm Labor.  |  Migale, R., et al. 2015. Am J Pathol. 185: 2390-401. PMID: 26212908
  6. Suppression of Dendritic Cell-Derived IL-12 by Endogenous Glucocorticoids Is Protective in LPS-Induced Sepsis.  |  Li, CC., et al. 2015. PLoS Biol. 13: e1002269. PMID: 26440998
  7. Sevoflurane Preconditioning Prevents Septic Myocardial Dysfunction in Lipopolysaccharide-Challenged Mice.  |  Li, J., et al. 2019. J Cardiovasc Pharmacol. 74: 462-473. PMID: 31425341
  8. Effect of lipopolysaccharide on nitric oxide synthase activity in rat proximal tubules.  |  Mayeux, PR., et al. 1995. Biochem Pharmacol. 49: 115-8. PMID: 7530953
  9. Pentamethyl-hydroxychromane, vitamin E derivative, inhibits induction of nitric oxide synthase by bacterial lipopolysaccharide.  |  Hattori, S., et al. 1995. Biochem Mol Biol Int. 35: 177-83. PMID: 7537570
  10. Norepinephrine suppresses inducible nitric oxide synthase activity in rat astroglial cultures.  |  Feinstein, DL., et al. 1993. J Neurochem. 60: 1945-8. PMID: 7682604
  11. In vivo induction of apoptosis (programmed cell death) in mouse thymus by administration of lipopolysaccharide.  |  Zhang, YH., et al. 1993. Infect Immun. 61: 5044-8. PMID: 8225580
  12. Serum factors, cell membrane CD14, and beta2 integrins are not required for activation of bovine macrophages by lipopolysaccharide.  |  Jungi, TW., et al. 1997. Infect Immun. 65: 3577-84. PMID: 9284122

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Lipopolysaccharide, E. coli O55:B5, 10 mg

sc-221855
10 mg
$96.00

Lipopolysaccharide, E. coli O55:B5, 25 mg

sc-221855A
25 mg
$166.00

Lipopolysaccharide, E. coli O55:B5, 100 mg

sc-221855B
100 mg
$459.00

Lipopolysaccharide, E. coli O55:B5, 500 mg

sc-221855C
500 mg
$1615.00

At what temperature and for how many days can we store the thawed form of the product?

Asked by: Esra
Thank you for your question. The product is stable at +4 °C. When stored that way, it will remain viable for about 12 months.
Answered by: Tech Support Europe
Date published: 2025-04-23

Is the product sterile? We do not wish to introduce microbial contamination when using it for cell culture in multi-day experiments. Tnx

Asked by: Holger
Thank you for your question. Lipopolysaccharide, E. coli O55:B5 is not sterile.
Answered by: BlakeJ
Date published: 2024-08-22

Hello - is this LPS suitable for cell culture? That is - is it sterile?

Asked by: Holger
Thank you for your question. Lipopolysaccharide (LPS) from Escherichia coli O55 is commonly used in cell culture experiments.Suitability of LPS from E. coli O55 for cell culture depends on the specific experimental objectives and the cell types being used.
Answered by: BlakeJ
Date published: 2024-08-14

Does this product have a technical information sheet as I cannot find it on the webpage

Asked by: Abdullah Iqbal
Thank you for contacting Santa Cruz Biotechnology . https://datasheets.scbt.com/coa/coa.php?sc=sc-221855&lot=G0224 https://datasheets.scbt.com/sds/aghs/en/sc-221855.pdf
Answered by: BlakeJ
Date published: 2024-07-26

What is the estimated molecular weight of Lipopolysaccharide, E. coli 055:B5?

Asked by: J_So
Thank you for your question. Unfortunately we are not able to perform any molecular weight analysis for this product. If you have any further questions, please contact Technical Service by phone, (800)-457-3801 option 2, email <scbt@scbt.com>, or by live chat directly on our website, www.scbt.com.
Answered by: Tech Service
Date published: 2025-02-07

What temperature should this be stored at after reconstitution?

Asked by: SCchem16
Thank you for your question. For this chemical, Lipopolysaccharide, E. coli 055:B5, we always recommend using stock solutions the same day, however, it can be stored at 4°C. Aqueous stock solutions are stable for up to 6 months at 4°C.
Answered by: Chemical Support 2
Date published: 2017-03-02
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Rated 5 out of 5 by from works perfect!I bought this reagent one month ago, it works perfect on RAW264.7 cells.
Date published: 2019-04-24
Rated 5 out of 5 by from BeckelBeckel, JM. et al. (PubMed 25630792) found that intravesical instillation of lipopolysaccharide, E. coli 055:B5 increased ATP concentrations in the bladder perfusate, and also increased voiding frequency; these effects were suppressed by Brilliant Blue FCF. -SCBT Publication Review
Date published: 2015-04-18
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Lipopolysaccharide, E. coli O55:B5 is rated 5.0 out of 5 by 2.
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