Recombinant Human Beta-defensin 126 (DEFB126)

Code CSB-YP866323HU
MSDS
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Source Yeast
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Code CSB-EP866323HU
MSDS
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Source E.coli
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Code CSB-EP866323HU-B
MSDS
Size Pls inquire
Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP866323HU
MSDS
Size Pls inquire
Source Baculovirus
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Code CSB-MP866323HU
MSDS
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Source Mammalian cell
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Product Details

Purity
>85% (SDS-PAGE)
Target Names
DEFB126
Uniprot No.
Alternative Names
DEFB126; C20orf8; DEFB26Beta-defensin 126; Beta-defensin 26; DEFB-26; Defensin; beta 126; Epididymal secretory protein 13.2; ESP13.2; HBD26
Species
Homo sapiens (Human)
Expression Region
21-63
Target Protein Sequence
NWYVKKCLND VGICKKKCKP EEMHVKNGWA MCGKQRDCCV PAD
Protein Length
Cytoplasmic domain
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization
Tris/PBS-based buffer, 6% Trehalose.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet
Please contact us to get it.

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Target Background

Function
Highly glycosylated atypical beta-defensin involved in several aspects of sperm function. Facilitates sperm transport in the female reproductive tract and contributes to sperm protection against immunodetection; both functions are probably implicating the negative surface charge provided by its O-linked oligosaccharides in the sperm glycocalyx. Involved in binding of sperm to oviductal epithelial cells to form a sperm reservoir until ovulation. Release from the sperm surface during capacitation and ovaluation by an elevation of oviductal fluid pH is unmasking other surface components and allows sperm to penetrate the cumulus matrix and bind to the zona pellucida of the oocyte. In vitro has antimicrobial activity and may inhibit LPS-mediated inflammation.
Gene References into Functions
  1. Data indicate a significant contribution of the frame-shift polymorphism of defensin beta 126 (DEFB126) rs11467497 to male infertility. PMID: 25721098
  2. These results demonstrate that the DEFB126 core peptide has critical functions in parallel to its C-terminal tail by showing LPS-binding activity, anti-inflammatory effects and intracellular regulatory function. In addition, DEFB126 displays antimicrobial activity against E. coli, S. aureus, and C. elegans. PMID: 23229569
  3. This review shows how DEFB126 is critical for efficient transport of sperm in the female reproductive tract, preventing their recognition by the female immune system. PMID: 22710670
  4. DEFB126 genotype and lectin binding were correlated with sperm performance in the penetration assays. PMID: 21775668
  5. Analyses restricted to glioblastoma (n = 254) yielded significant associations for the SELP, DEFB126/127, SERPINI1, and LY96 genetic regions. PMID: 19423540

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Involvement in disease
May be involved in infertility. Homozygosity for frameshift truncating mutations are associated with reduced sperm O-linked glycan content, impaired sperm mobility and a reduced live birth rate (PubMed:21775668, PubMed:25721098). However, for one common mutation the change in sperm sialic acid levels has been challenged (PubMed:26832966).
Subcellular Location
Secreted.
Protein Families
Beta-defensin family
Tissue Specificity
High-level and epididymis-specific expression. Expression is down-regulated in infertile men.
Database Links

HGNC: 15900

KEGG: hsa:81623

STRING: 9606.ENSP00000371835

UniGene: Hs.124211

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301-363-4651 (Available 9 a.m. to 5 p.m. CST from Monday to Friday)
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7505 Fannin St., Ste 610, Room 7 (CUBIO Innovation Center), Houston, TX 77054, USA
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