Mouse LBP Antibody

Catalog # Availability Size / Price Qty
AF6635
AF6635-SP
Mouse LBP Antibody in Data
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Mouse LBP Antibody Summary

Species Reactivity
Mouse
Specificity
Detects mouse LBP in direct ELISAs and Western blots. In direct ELISAs, approximately 25% cross-reactivity with recombinant human LBP is observed.
Source
Polyclonal Sheep IgG
Purification
Antigen Affinity-purified
Immunogen
Mouse myeloma cell line NS0-derived recombinant mouse LBP
Gly25-Val481 (Ser102Arg, Tyr284His)
Accession # NP_032515
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

Applications

Recommended Concentration
Sample
Western Blot
1 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Example

Western Blot Detection of Mouse LBP by Western Blot. View Larger

Detection of Mouse LBP by Western Blot. Western blot shows lysates of mouse ovary tissue. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Mouse LBP Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6635) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for LBP at approximately 65 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Sterile PBS to a final concentration of 0.2 mg/mL.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: LBP

LBP (Lipopolysaccharide binding protein) is a 58‑62 kDa, single-chain glycoprotein member of the BPI/LBP family, BPI/PLUNC/PSP superfamily of lipid-binding proteins (1-3). It is secreted by a number of mammalian cell types, including hepatocytes (4), gingival keratinocytes (5), intestinal Paneth cells (6), and type II Greater alveolar cells (7). LBP is considered to be a class 1 APR (acute phase reactant) that is induced upon exposure to both IL-1 and IL-6 (8). These two cytokines appear upon immune cell exposure to pathogenic microbes. Following its synthesis and release, LBP is known to interact with bacterial wall components, lipopolysaccharide/LPS/Lipid A from Gram- (Gm-) bacteria, and lipoteichoic acid/LTA from Gm+ bacteria (9-13). In the case of LPS, this interaction appears to occur both in the bacterial cell wall, and within the intercellular space, where LPS micelles naturally form following bacterial death and cell wall dissolution (14-17). LBP is posited to induce disassembly of LPS micelles, allowing for LPS binding to LBP, and a heparin-mediated transfer of LPS from LBP to membrane-bound CD14 on the surface of monocytes/macrophages (15, 18). This CD14:LPS complex activates a TLR4:MD2 membrane complex, resulting in the production of NO and TNF-alpha (19). TNF-alpha serves as a chemoattractant for PMNs, and an initiator of coagulation that helps to wall-off and localize microbial elements (16). Notably, increased concentrations of LBP are also associated with parasitic infections (Trypanosoma), and may contribute to the immune response towards parasites (20). In addition to the above, LBP is also reported to transfer LPS to lipoproteins, particularly HDL and LDL (19, 21-23). For LDL, this transfer appears to be inhibitory to monocyte activation; for HDL, the effect may be either stimulatory or inhibitory, depending upon the circumstances (19). Mouse LBP is synthesized as a 481 amino acids (aa) precursor that contains a 25 aa signal sequence and a 456 aa mature region (aa 26-481) (24). It contains an N‑terminal LPS binding region plus a likely C-terminal LPS transfer region (24, 25). Mature mouse LBP shares 68% and 88% aa identity with human and rat LBP, respectively (11, 25).

References
  1. Beamer, L.J. et al. (1998) Protein Sci. 7:906.
  2. Schroder, N.W.J. & R.R. Schumann (2005) J. Endotoxin Res. 11:237.
  3. Miyake, K. (2006) J. Endotoxin Res. 12:195.
  4. Grube, B.J. et al. (1994) J. Biol. Chem. 269:8477.
  5. Ren, L. et al. (2004) J. Periodont. Res. 39:242.
  6. Hansen, G.H. et al. (2009) Histochem. Cell Biol. 131:727.
  7. Dentener, M.A. et al. (2000) Am. J. Respir. Cell Mol. Biol. 23:146.
  8. Schumann, R.R. et al. (1996) Mol. Cell. Biol. 16:3490.
  9. Weber, J.R. et. al. (2003) Immunity 19:269.
  10. Schroder, N.W.J. et al. (2004) J. Immunol. 173:2683.
  11. Su, G.L. et al. (1994) J. Immunol. 153:743.
  12. Schroder, N.W.J. et al. (2003) J. Biol. Chem. 178:15587.
  13. Wright, S.D. et al. (1989) J. Exp. Med. 170:1231.
  14. Hallatschek, W. et al. (2004) Eur. J. Immunol. 34:1441.
  15. Schumann, R.R. & E. Latz (2000) Chem. Immunol. 74:42.
  16. Mannel, D.N. & B. Echtenacher (2000) Chem. Immunol. 74:141.
  17. Tsukamoto, H. et al. (2010) Int. Immunol. 22:271.
  18. Heinzelmann, M. & H. Bosshart (2005) J. Immunol. 174:2280.
  19. Gallay, P. et al. (1993) Infect. Immun. 61:378.
  20. Ngure, R.M. et al. (2009) Res. Vet. Sci. 86:394.
  21. Levels, J.H.M. et al. (2005) Infect. Immun. 73:2321.
  22. Hubacek, J.A. et al. (1997) Biochem. Biophys. Res. Commun. 236:427.
  23. Thompson, P.A. & R.L. Kitchens (2006) J. Immunol. 177:4880.
  24. Lengacher, S. et al. (1995-1996) J. Inflamm. 47:165.
  25. Schumann, R.R. et al. (1990) Science 249:1429.
Long Name
Lipopolysaccharide-binding Protein
Entrez Gene IDs
3929 (Human); 16803 (Mouse)
Alternate Names
LBP; lipopolysaccharide binding protein; lipopolysaccharide-binding protein; LPS-binding protein; MGC22233

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