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Human LBP / Lipopolysaccharide binding Protein (His Tag)

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Human LBP Protein Product Information
Synonym:MGC22233, LBP
Protein Construction:A DNA sequence encoding the human LBP (NP_004130.2) extracellular domain (Met 1-Val 481) was fused with the a polyhistidine tag at the C-terminus.
Expressed Host:Human Cells
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Human LBP Protein QC Testing
Purity:> 95 % as determined by SDS-PAGE
Endotoxin:< 1.0 EU per μg of the protein as determined by the LAL method
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Ala 26
Molecule Mass:The recombinant human LBP consists of 467 amino acids and has a predicted molecular mass of 52.5 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rhLBP is approximately 62 kDa due to glycosylation.
Formulation:Lyophilized from sterile 20mM Tris, 100mM NaCl, 0.05mM EDTA, pH 8.0
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Human LBP Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Human LBP Protein SDS-PAGE
Human LBP / Lipopolysaccharide binding Protein (His Tag) SDS-PAGE
Other LBP Recombinant Protein Products
Lipopolysaccharide binding protein/LBP Background

Lipopolysaccharide binding protein ( LBP ) is a glycoprotein that is synthesized principally by hepatocytes. LBP is a trace plasma protein that binds to the lipid A moiety of bacterial lipopolysaccharides ( LPSs ). LBP binds directly to the outer membrane of Gram-negative bacteria and to purified aggregates of extracted endotoxin, and catalyses the delivery of endotoxin to membrane ( mCD14,GPI-Linked ) and soluble ( sCD14 ) forms of CD14, thereby markedly increasing host cell sensitivity to endotoxin. LBP efficiently catalyses the transfer of individual molecules of endotoxin to (s)CD14 only when LBP–endotoxin aggregates are formed in the presence of albumin. In the presence of EDTA, LBP binding promotes further disaggregation of endotoxin. LBP binding does not have such drastic effects under more physiological conditions, but may still induce more subtle topological rearrangements of endotoxin.

Human Lipopolysaccharide binding protein/LBP References
  • J. Weiss, 2003, Biochemical Society Transactions: Volume 31, part 4: 785-790.
  • RR Schumann, et al., Science, 1990, Vol 249, Issue 4975: 1429-143.
  • Carsten J. Kirschning, et al., 1997, Genomics, Volume 46, Issue 3: 416-25.
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    Catalog: 10526-H08H-20
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