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LBP cell lysate

Human LBP HEK293 Overexpression Lysate

Gene Names
LBP; BPIFD2
Applications
Western Blot
Synonyms
LBP; Human LBP HEK293 Overexpression Lysate; Human LBP/Lipopolysaccharide Binding HEK293 Cell Lysate (WB positive control); lipopolysaccharide binding protein; Human BPIFD2 Overexpression Lysate; LBP cell lysate
Ordering
For Research Use Only!
Host
HEK293 Cells
Form/Format
1x Sample Buffer (1x modified RIPA buffer+1x SDS loading buffer).
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
Sequence Positions
467aa
Sequence
Met1-Val481
Applicable Applications for LBP cell lysate
Western Blot (WB)
Application Notes
WB: Use at an assay dependent dilution.
Species
Human
Recommend Usage
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.2. Re-dissolve the pellet using 200uL pure water and boil for 2-5 min.
Sequence 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.
Preparation Method
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors. Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Preparation and Storage
Store at 4 degree C for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80 degree C for up to twelve months. Avoid repeated freeze-thaw cycles.
Samples are stable for up to twelve months from date of receipt.
Related Product Information for LBP cell lysate
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 purified aggregates of extracted endotoxin and catalyzes the delivery of endotoxin to the membrane (mCD14, GPI-Linked) and soluble (sCD14) forms of CD14, thereby markedly increasing host cell sensitivity to endotoxin. LBP efficiently catalyzes 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.

This Human LBP overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of LBP protein from the overexpression lysate was verified.
Product Categories/Family for LBP cell lysate
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.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Accession #
Molecular Weight
53,384 Da
NCBI Official Full Name
lipopolysaccharide-binding protein
NCBI Official Synonym Full Names
lipopolysaccharide binding protein
NCBI Official Symbol
LBP
NCBI Official Synonym Symbols
BPIFD2
NCBI Protein Information
lipopolysaccharide-binding protein; LPS-binding protein; BPI fold containing family D, member 2
UniProt Protein Name
Lipopolysaccharide-binding protein
UniProt Gene Name
LBP
UniProt Synonym Gene Names
LBP
UniProt Entry Name
LBP_HUMAN

NCBI Description

The protein encoded by this gene is involved in the acute-phase immunologic response to gram-negative bacterial infections. Gram-negative bacteria contain a glycolipid, lipopolysaccharide (LPS), on their outer cell wall. Together with bactericidal permeability-increasing protein (BPI), the encoded protein binds LPS and interacts with the CD14 receptor, probably playing a role in regulating LPS-dependent monocyte responses. Studies in mice suggest that the encoded protein is necessary for the rapid acute-phase response to LPS but not for the clearance of LPS from circulation. This protein is part of a family of structurally and functionally related proteins, including BPI, plasma cholesteryl ester transfer protein (CETP), and phospholipid transfer protein (PLTP). [provided by RefSeq, Apr 2012]

Uniprot Description

LBP: Binds to the lipid A moiety of bacterial lipopolysaccharides (LPS), a glycolipid present in the outer membrane of all Gram-negative bacteria. The LBP/LPS complex seems to interact with the CD14 receptor. Belongs to the BPI/LBP/Plunc superfamily. BPI/LBP family.

Protein type: Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 20q11.23

Cellular Component: extracellular space; cell surface; extracellular region

Molecular Function: protein binding; lipopolysaccharide binding; receptor binding

Biological Process: positive regulation of tumor necrosis factor biosynthetic process; detection of molecule of bacterial origin; positive regulation of toll-like receptor 4 signaling pathway; positive regulation of interleukin-6 production; response to lipopolysaccharide; negative regulation of tumor necrosis factor production; positive regulation of tumor necrosis factor production; defense response to Gram-negative bacterium; leukocyte chemotaxis during inflammatory response; positive regulation of chemokine production; positive regulation of interleukin-8 production; lipopolysaccharide transport; defense response to Gram-positive bacterium; macrophage activation during immune response; acute-phase response; toll-like receptor signaling pathway; lipopolysaccharide-mediated signaling pathway; cellular defense response; innate immune response; opsonization; toll-like receptor 4 signaling pathway; positive regulation of macrophage activation

Research Articles on LBP

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Product Notes

The LBP lbp (Catalog #AAA8113925) is a Cell Lysate produced from HEK293 Cells and is intended for research purposes only. The product is available for immediate purchase. The immunogen sequence is 467aa. AAA Biotech's LBP can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB). WB: Use at an assay dependent dilution. Researchers should empirically determine the suitability of the LBP lbp for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. The amino acid sequence is listed below: Met1-Val48 1. It is sometimes possible for the material contained within the vial of "LBP, Cell Lysate" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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