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Human DEFB4A Recombinant Protein (N-GST & C-His) (HT380022)

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Overview
Catalog No.HT380022
Description
Recombinant Human DEFB4A Protein, N-GST & C-His (HT380022) expressed in E. coli, spanning Gly24-Pro64. Purity: >90% by SDS-PAGE.
Highlights
  • His-Tagged — N-terminal 6×His tag for IMAC purification.
  • E. coli Expression — High-yield, cost-effective production.
  • High Purity — >90% purity verified by SDS-PAGE.
Expression systemE. coli
AccessionO15263
Protein lengthGly24-Pro64
ApplicationsELISA, Immunogen, SDS-PAGE, WB, Bioactivity testing in progress
SpeciesHomo sapiens (Human)
Nature Recombinant
Endotoxin level Please contact with the lab for this information.
Purity >90% as determined by SDS-PAGE.
Predicted molecular weight 32.52 kDa
Form Lyophilized
Storage buffer Lyophilized from a solution in PBS pH 7.4, 1 mM EDTA, 4% Trehalose, 1% Mannitol.

Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.

Reconstitution Reconstitute in sterile water for a stock solution. A copy of datasheet will be provided with the products, please refer to it for details.
Shipping In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
Stability and Storage Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for frequent use. Store at -20 to -80°C for twelve months from the date of receipt.
Alternate NamesBD-2, Beta-defensin 2, DEFB102, DEFB2, DEFB4, DEFB4A, Defensin beta 4A, Defensin, beta 2, SAP1, Skin-antimicrobial peptide 1, hBD-2
Background

Defensin beta 4A is a ~7 kDa protein. Exhibits antimicrobial activity against Gram-negative bacteria and Gram-positive bacteria, with highest activity against Gram-negative bacteria. Antimicrobial activity against P.aruginosa seems to be salt-sensitive and is reduced with high salt concentrations greater than 25 mM. Also exhibits antimicrobial activity against the yeast C.albicans. Permeabilizes C.albicans cell membranes via targeting plasma membrane lipid phosphatidylinositol 4,5-bisphosphate (PIP2), thereby leading to cell fragmentation and cell death. Acts as a ligand for C-C chemokine receptor CCR6.

1. Harder, J. et al. (2000) American journal of respiratory cell and molecular biology 22, 714-21. PMID: 10837369
2. Harder, J. et al. (1997) Nature 387, 861. PMID: 9202117
3. Järvå, M. et al. (2018) Science advances 4, eaat0979. PMID: 30050988
4. Yang, D. et al. (1999) Science (New York, N.Y.) 286, 525-8. PMID: 10521347
5. Röhrl, J. et al. (2010) The Journal of biological chemistry 285, 7028-34. PMID: 20068036
Note For research use only
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Formula
Mass (g) = Concentration (mol/L) × Volume (L) × MW (g/mol)
Enter any 2 of Mass, Concentration, Volume + Molecular Weight to solve for the unknown.
Mass
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Concentration
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Volume
Molecular Weight *
g/mol
Formula
C₁ × V₁ = C₂ × V₂
Enter any 3 of the 4 values to solve for the unknown.
Stock Solution
C₁ (Stock Conc.)
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V₁ (Stock Vol.)
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Working Solution
C₂ (Working Conc.)
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V₂ (Working Vol.)
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