Recombinant Human Beta-defensin 103 protein (DEFB103A), Homo sapiens (Human), E.Coli, Tag-Free, 5.2 kDa, purity >>98% as determined by SDS-PAGE.

Recombinant Human Beta-defensin 103 protein (DEFB103A)

Recombinant Human Beta-defensin 103 protein (DEFB103A) — Exhibits antimicrobial activity against Gram-positive bacteria S. Purity >98%.

SKU: BCACP-000889 Category:
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Product SKUBCACP-000889
Product DescriptionRecombinant Human Beta-defensin 103 protein (DEFB103A) protein is expressed from E.Coli with Tag-Free. It contains 23-67aa. [Accession | P81534].
Uniprot No.P81534
Gene NamesDEFB103A
Purity>98% as determined by SDS-PAGE.
Expression SystemE.Coli
Expression Region23-67aa
SpeciesHomo sapiens (Human)
Tag InfoTag-Free
Molecular weight5.2 kDa
ActivityFully biologically active when compared to standard. The ED50 as determined by its ability to inhibit the cell growth of Mv1Lu mink lung epithelial cells is less than 3.0 ug/mL, corresponding to a specific activity of >333 IU/mg.
BufferLyophilized from a 0.2 μm filtered 20 mM Tris-HCl, 0.5 M NaCl, 6% Trehalose, pH 8.0
StorageStore at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Alternative NamesBD 3; BD-3; BD3; beta 103; Beta defensin 103A; Beta defensin 103A precursor; Beta defensin 3; Beta-defensin 103; Beta-defensin 3; D103A_HUMAN; DEF B3; DEFB 103; DEFB 103A; DEFB 3; DEFB-3; DEFB103; DEFB103A; DEFB103B; DEFB3; Defensin; Defensin beta 103A; Defensin beta 3; Defensin like protein; Defensin-like protein; HBD 3; hBD-3; HBD3; HBP 3; HBP3; mBD3

Function

Exhibits antimicrobial activity against Gram-positive bacteria S.aureus and S.pyogenes, Gram-negative bacteria P.aeruginosa and E.coli and the yeast C.albicans. Kills multiresistant S.aureus and vancomycin-resistant E.faecium. No significant hemolytic activity was observed.

Biological Context

Subcellular Location: Secreted
Tissue Specificity: Highly expressed in skin and tonsils, and to a lesser extent in trachea, uterus, kidney, thymus, adenoid, pharynx and tongue. Low expression in salivary gland, bone marrow, colon, stomach, polyp and larynx. No expression in small intestine

Product Specifications

Recombinant Human Beta-defensin 103 protein (DEFB103A) is a recombinant protein from Homo sapiens (Human), expressed in E.Coli, covering amino acids 23-67aa, with Tag-Free tag, molecular weight 5.2 kDa, purity >98% as determined by SDS-PAGE.. Suitable for ELISA and Western Blot applications.

SDS-PAGE: Single band at expected molecular weight confirming purity.

ELISA: Suitable as coating antigen or detection standard.

Western Blot: Compatible with standard Western Blot protocols.

Protein Interaction: Validated for SPR (Surface Plasmon Resonance) and BLI (Bio-Layer Interferometry) studies.

Shipping: Shipped at ambient temperature. Lyophilized protein is stable during transit.

Storage: Store lyophilized protein at -20°C to -80°C. Reconstituted protein should be aliquoted and stored at -80°C. Avoid repeated freeze-thaw cycles.

Shelf Life: 12 months from date of receipt when stored as recommended.

Shipping Time: Orders placed before 2 PM EST ship same day. International orders typically deliver within 5-10 business days.

Related products

Protein Biology

Function

Exhibits antimicrobial activity against Gram-positive bacteria S.aureus and S.pyogenes, Gram-negative bacteria P.aeruginosa and E.coli and the yeast C.albicans. Kills multiresistant S.aureus and vancomycin-resistant E.faecium. No significant hemolytic activity was observed

Subcellular Location

Secreted

Tissue Specificity

Highly expressed in skin and tonsils, and to a lesser extent in trachea, uterus, kidney, thymus, adenoid, pharynx and tongue. Low expression in salivary gland, bone marrow, colon, stomach, polyp and larynx. No expression in small intestine

Gene: DEFB103A, DEFB103B  |  Organism: Homo sapiens  |  Synonyms: Beta-defensin 3; Defensin, beta 103; Defensin-like protein
Key Publications

Frequently Asked Questions

How do I order or inquire about this product?

Fill out the Online Inquiry form with your required quantity and specifications. You can also email sales@biocrestsci.com. Our team typically responds within 4 business hours with a quote and availability confirmation.

What is the shipping and delivery time?

Orders placed before 2 PM EST ship the same day. Domestic (US) delivery typically takes 2-3 business days. International orders deliver within 5-10 business days. All products are shipped at ambient temperature with appropriate packaging to ensure stability.

How should I store this recombinant protein?

Lyophilized proteins should be stored at -20°C to -80°C upon receipt. After reconstitution, aliquot and store at -80°C. Avoid repeated freeze-thaw cycles. Shelf life is 12 months from date of receipt when stored as recommended.

What quality controls are performed on your products?

Each product undergoes SDS-PAGE purity analysis (typically >85-95%), endotoxin testing, and bioactivity validation. Products are validated for ELISA, Western Blot, and SPR/BLI applications as specified on this product page. A Certificate of Analysis (CoA) is available upon request.

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