Recombinant Mouse Defensin beta 1 Protein

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Product Details

Summary
Reactivity MuSpecies Glossary
Applications Func, PAGE
Format
Carrier-Free
Concentration
LYOPH

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Recombinant Mouse Defensin beta 1 Protein Summary

Description
A single, non-glycosylated biologically active polypeptide chain corresponding to 48 residues of DEFB1.

Source: E. coli

Amino Acid Sequence: VGILTSLGRR TDQYKCLQHG GFCLRSSCPS NTKLQGTCKP DKPNCCKS

Preparation
Method
Novus' biologically active proteins are stringently purified to provide only the safest and most highly effective proteins available. This protein was expressed in E. coli, purified by HPLC, QC tested by SDS-PAGE and Western Blot and validated on appropriate cell lines for bioactivity. All HPLC and bioactivity data is provided for your assurance.
Details of Functionality
Defensin beta 1 protein is fully biologically active when compared to standard. The biologically active determined by a chemotaxis bioassay using CD34+ dendritic cells is in a concentration range of 100.0-1000.0 ng/ml.
Source
E. coli
Protein/Peptide Type
Biologically Active Protein
Gene
DEFB1
Purity
> 97 % pure by SDS-PAGE and HPLC
Endotoxin Note
Less than 1 EU/ug of endotoxin as determined by LAL method.

Applications/Dilutions

Theoretical MW
5.2 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

Storage
Store at 4C after rehydration. For extended storage after rehydration, add an equal volume of glycerol and store at -20C. Avoid repeated freeze-thaw cycles.
Buffer
Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4.
Concentration
LYOPH
Purity
> 97 % pure by SDS-PAGE and HPLC
Reconstitution Instructions
Reconstitute with sterilized distilled water or 0.1% BSA aqueous buffer to a final concentration of 0.1 - 1.0 mg/ml.

Notes

This lyophilized preparation is stable at 2-8 degrees C, but should be kept at -20 degrees C for long term storage, preferably desiccated. Upon reconstitution, the preparation is most stable at -20 to -80 degrees C, and can be stored for one week at 2-8 degrees C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 degrees C to -80 degrees C. Avoid repeated freeze/thaw cycles.

Alternate Names for Recombinant Mouse Defensin beta 1 Protein

  • BD1
  • BD-1
  • beta-defensin 1
  • beta-defensin-1
  • DEFB-1
  • DEFB101
  • defensin, beta 1HBD-1
  • hBD-1
  • HBD1MGC51822

Background

Defensins (alpha and beta) are cationic peptides with antimicrobial activity against Gram-negative and Gram-positive bacteria, fungi, and enveloped viruses. They are 2-6 k Da proteins and take important roles in innate immune system. On the basis of their size and pattern of disulfide bonding, mammalian defensins are classified into alpha, beta and theta categories. beta-Defensins are expressed on some leukocytes and at epithelial surfaces. They contain a six-cysteine motif that forms three intra-molecular disulfide bonds. Because beta-defensins are cationic peptides, they can therefore interact with the membrane of invading microbes, which are negative due to lipopolysaccharides (LPS) and lipoteichoic acid (LTA) found in the cell membrane. Especially, they have higher affinity to the binding site compared to Ca 2+ and Mg2+ ions. Furthermore, they can affect the stability of the membrane. Additionally, they are not only have the ability to strengthen the innate immune system but can also enhance the adaptive immune system by chemotaxis of monocytes, T-lymphocytes, dendritic cells and mast cells to the infection site.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 2 years from date of receipt.

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Bioinformatics

Gene Symbol DEFB1