Recombinant Rat beta-Defensin 4/2 Protein

Name: Recombinant Rat beta-Defensin 4/2 Protein
Brand: Novus Biologicals
SKU: NBP2-35238

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-35238

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Product Datasheet / COA

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Product Specifications
Scientific Data
Preparation & Storage
Background
Product Documents
Specific Notices

Key Product Details

Source

E. coli

Conjugate

Unconjugated

Applications

Bioactivity, SDS-PAGE

View all beta-Defensin 2 Proteins and Enzymes »

Product Specifications

Description

A single non-glycosylated polypeptide chain containing 41 amino acids corresponding to beta-Defensin 4/2 Source: E. coli

Uniprot ID: O88514

Amino Acid Sequence: QSINNPITCL TKGGVCWGPC TGGFRQIGTC GLPRVRCCKK K

Purity

>95%, by SDS-PAGE and HPLC

Endotoxin Level

Less than 1 EU/ug of beta-Defensin 4/2 as determined by LAL method.

Predicted Molecular Mass

4.4 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.

Activity

Defensin beta 4 Protein is fully biologically active when compared to standard. The biologically active determined by a chemotaxis bioassay using human monocytes is in a concentration range of 0.1-100.0 ng/ml.

Protein / Peptide Type

Recombinant Protein

Scientific Data Images for Recombinant Rat beta-Defensin 4/2 Protein

SDS-PAGE: Recombinant Rat beta-Defensin 4/2 Protein [NBP2-35238]

SDS-Page: Recombinant Rat beta-Defensin 4/2 Protein [NBP2-35238]

Formulation, Preparation and Storage

NBP2-35238

Formulation	Lyophilized from a 0.2 um filtered concentrated solution in 10 mM PB, pH 7.4, 500 mM NaCl.
Preservative	No Preservative
Concentration	Lyoph
Reconstitution	Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL. Apportion stock solutions into working aliquots and store at <-20C.
Format	Carrier-Free
Shipping	The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage	Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.

Background: beta-Defensin 2

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 kDa 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

Long Name

Defensin 2 beta

Alternate Names

BD-2, betaDefensin 2, DEFB2, DEFB4A, DEFB4B, HBD-2, SAP-1

Gene Symbol

DEFB4A

Additional beta-Defensin 2 Products

Product Documents for Recombinant Rat beta-Defensin 4/2 Protein

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COA

Product Specific Notices for Recombinant Rat beta-Defensin 4/2 Protein

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.

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

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