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BPI cell lysate

Human BPI HEK293 Overexpression Lysate

Gene Names
BPI; rBPI; BPIFD1
Applications
Western Blot
Synonyms
BPI; Human BPI HEK293 Overexpression Lysate; Human BPI HEK293 Cell Lysate (WB positive control); bactericidal/permeability-increasing protein; Human BPIFD1 Overexpression Lysate; Human rBPI Overexpression Lysate; BPI 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-Lys487
Applicable Applications for BPI 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 BPI (P17213) (Met1-Lys487) with a C-terminal polyhistidine tag was expressed.
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 BPI cell lysate
Bactericidal/permeability-increasing protein is a member of the BPI/LBP/Plunc superfamily and BPI/LBP family. It is a cationic protein which can be detected in the azurophilic granule and on the surface of polymorphonuclear leukocytes. Bactericidal/permeability-increasing protein also is a lipopolysaccharide binding protein. It is associated with human neutrophil granules and has bactericidal activity on gram-negative organisms. Bactericidal/permeability-increasing protein contains two domains that adopt the same structural fold, even though they have little sequence similarity. It binds to and neutralises lipopolysaccharides from the outer membrane of Gram-negative bacteria. The cytotoxic action of bactericidal/permeability-increasing protein is limited to many species of Gram-negative bacteria; this specificity may be explained by a strong affinity of the very basic N-terminal half for the negatively charged lipopolysaccharides that are unique to the Gram-negative bacterial outer envelope.

This Human BPI overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of BPI protein from the overexpression lysate was verified.
References
G Schlag, et al. (1999) Protective effect of bactericidal/permeability-increasing protein (rBPI21) in baboon sepsis is related to its antibacterial, not antiendotoxin, properties. Annals of Surgery. 229(2): 262-71.Michael Levin, et al. (2000) Recombinant bactericidal/permeability-increasing protein (rBPI21) as adjunctive treatment for children with severe meningococcal sepsis: a randomised trial. Lancet. 356 (9234):961-7.Geraldine Canny, et al. (2002) Lipid mediator-induced expression of bactericidal/ permeability-increasing protein (BPI) in human mucosal epithelia. PNAS. 99(6):3902-7. Elsbach, et al. (1998) The bactericidal/permeability-increasing protein (BPI) in antibacterial host defense (pdf). Journal of Leukocyte biology. 64(1):14-8.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
671
NCBI Accession #
NCBI GenBank Nucleotide #
NCBI Official Full Name
bactericidal permeability-increasing protein
NCBI Official Synonym Full Names
bactericidal/permeability-increasing protein
NCBI Official Symbol
BPI
NCBI Official Synonym Symbols
rBPI; BPIFD1
NCBI Protein Information
bactericidal permeability-increasing protein; BPI fold containing family D, member 1; CAP 57; recombinant BPI holoprotein, rBPI
UniProt Protein Name
Bactericidal permeability-increasing protein
UniProt Gene Name
BPI
UniProt Synonym Gene Names
BPI
UniProt Entry Name
BPI_HUMAN

NCBI Description

This gene encodes a lipopolysaccharide binding protein. It is associated with human neutrophil granules and has antimicrobial activity against gram-negative organisms. [provided by RefSeq, Nov 2014]

Uniprot Description

BPI: The cytotoxic action of BPI is limited to many species of Gram-negative bacteria; this specificity may be explained by a strong affinity of the very basic N-terminal half for the negatively charged lipopolysaccharides that are unique to the Gram-negative bacterial outer envelope. Has antibacterial activity against the Gram-nagative bacterium P.aeruginosa, this activity is inhibited by LPS from P.aeruginosa. Belongs to the BPI/LBP/Plunc superfamily. BPI/LBP family.

Protein type: Cell surface; Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 20q11.23

Cellular Component: integral to plasma membrane; cytoplasm

Molecular Function: lipopolysaccharide binding

Biological Process: negative regulation of interleukin-6 production; negative regulation of interleukin-8 production; immune response; negative regulation of tumor necrosis factor production; negative regulation of macrophage activation; defense response to Gram-negative bacterium

Research Articles on BPI

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Product Notes

The BPI bpi (Catalog #AAA8115300) 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 BPI 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 BPI bpi 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-Lys48 7. It is sometimes possible for the material contained within the vial of "BPI, 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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