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BD-4 recombinant protein :: beta Defensin-4 Recombinant Protein

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Catalog # MBS553171
Unit / Price
  0.005 mg  /  $145 +1 FREE 8GB USB
  0.02 mg  /  $220 +1 FREE 8GB USB
BD-4 recombinant protein
Product Name

beta Defensin-4 (BD-4), Recombinant Protein

Also Known As

Human beta Defensin-4 Recombinant

Product Synonym Names
DEFB104A; bd-4; bd4; beta defensin
Matching Pairs
Matching Pairs
Research Use Only
For Research Use Only. Not for use in diagnostic procedures.
Sequence Length
3D Structure
ModBase 3D Structure for Q8WTQ1
E Coli
>98%, as determined by SDS-PAGE and HPLC
Recombinant Human beta Defensin-4 was lyophilized from 0.2 um filtered 100mM NaCl, 20mM PB, pH 7.4.
Host Note
Optimized DNA sequence encoding Human beta Defensin-4 mature chain was expressed in Escherichia Coli.
Endotoxin content was assayed using a LAL gel clot method.
Endotoxin level was found to be less than 0.1 ng/ug (1EU/ug).
A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
Molecular Weight Note
Native human BD-4 is generated by the proteolytic removal of the signal peptide and propeptide, the molecule has a calculated molecular mass of approximately 6 kDa. Recombinant beta Defensin-4 is a disulfide-linked monomer protein consisting of 51 amino acid residue subunits, and migrates as an approximately 6 kDa protein under non-reducing and reducing conditions in SDS-PAGE.
Preparation and Storage
The lyophilized protein is stable for at least 2 years from date of receipt at -20 degree C.
Upon reconstitution, this cytokine can be stored in working aliquots at 2 degree - 8 degree C for one month, or at -20 degree C for six months, with a carrier protein without detectable loss of activity.

Avoid repeated freeze/thaw cycles.
Other Notes
Small volumes of BD-4 recombinant protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.
Related Product Information for
BD-4 recombinant protein
Defensins are a large family of peptides of which two groups exist in mammals: alpha defensins and beta defensins, which are distinguishable by the spacing and connectivity of the conserved cysteine residues within the mature peptides.It is thought that defensins function in the eradication of pathogens from the host system by inserting themselves into the bacterial membrane under the influence of membrane potential, forming channels which lead to leakage of cytoplasmic molecules and cell death. Unlike hBD-1, this second peptide, human beta-defensin-2 (hBD-2), is regulated at a transcriptional level in response to contact with microorganisms, and is highly eåective in killing the gram negative bacteria Its expression is also upregulated by the cytokine tumor necrosis factor-alpha.
Product Categories/Family for BD-4 recombinant protein
NCBI/Uniprot data below describe general gene information for BD-4. It may not necessarily be applicable to this product.
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Primary Accession #
UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
8,526 Da
NCBI Official Full Name
beta-defensin 104
UniProt Protein Name
Beta-defensin 104
UniProt Synonym Protein Names
Beta-defensin 4; BD-4; DEFB-4; hBD-4; Defensin, beta 104
UniProt Gene Name
DEFB104A  [Similar Products]
UniProt Synonym Gene Names
DEFB104; DEFB4; BD-4; DEFB-4; hBD-4  [Similar Products]
UniProt Entry Name
NCBI Summary for BD-4
Defensins form a family of antimicrobial and cytotoxic peptides made by neutrophils. Defensins are short, processed peptide molecules that are classified by structure into three groups: alpha-defensins, beta-defensins and theta-defensins. All beta-defensin genes are densely clustered in four to five syntenic chromosomal regions. Chromosome 8p23 contains at least two copies of the duplicated beta-defensin cluster. This duplication results in two identical copies of defensin, beta 104, DEFB104A and DEFB104B, in head-to-head orientation. This gene, DEFB104B, represents the more telomeric copy. [provided by RefSeq, Oct 2014]
UniProt Comments for BD-4
defensin, beta 4: Has antimicrobial activity. Synergistic effects with lysozyme and DEFB103. Belongs to the beta-defensin family.

Protein type: Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 8p23.1

Cellular Component: cell surface; extracellular region

Biological Process: defense response to bacterium; innate immune response
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While every efforts were made to ensure the accuracy of the information provided in this datasheet, MyBioSource will not be liable for any omissions or errors contained herein. MyBioSource reserves the right to make changes to this datasheet at any time without prior notice.

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