Recombinant Human Probable ATP-dependent RNA helicase DDX4 (DDX4)

In Stock
Code: CSB-EP882074HU
Size:
20ug
20ug100ug1mg
US$224
Quantity:
Express system: E.coli
Species: Homo sapiens (Human)
Tag Info: C-terminal 6xHis-tagged
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Product Details

Abbreviation
Recombinant Human DDX4 protein
Purity
Greater than 85% as determined by SDS-PAGE.
Target Names
DDX4
Uniprot NO.
Research Area
Epigenetics and Nuclear Signaling
Alternative Names
DEAD box protein 4;Vasa homolog
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
1-724aa
Target Protein Sequence
MGDEDWEAEINPHMSSYVPIFEKDRYSGENGDNFNRTPASSSEMDDGPSRRDHFMKSGFASGRNFGNRDAGECNKRDNTSTMGGFGVGKSFGNRGFSNSRFEDGDSSGFWRESSNDCEDNPTRNRGFSKRGGYRDGNNSEASGPYRRGGRGSFRGCRGGFGLGSPNNDLDPDECMQRTGGLFGSRRPVLSGTGNGDTSQSRSGSGSERGGYKGLNEEVITGSGKNSWKSEAEGGESSDTQGPKVTYIPPPPPEDEDSIFAHYQTGINFDKYDTILVEVSGHDAPPAILTFEEANLCQTLNNNIAKAGYTKLTPVQKYSIPIILAGRDLMACAQTGSGKTAAFLLPILAHMMHDGITASRFKELQEPECIIVAPTRELVNQIYLEARKFSFGTCVRAVVIYGGTQLGHSIRQIVQGCNILCATPGRLMDIIGKEKIGLKQIKYLVLDEADRMLDMGFGPEMKKLISCPGMPSKEQRQTLMFSATFPEEIQRLAAEFLKSNYLFVAVGQVGGACRDVQQTVLQVGQFSKREKLVEILRNIGDERTMVFVETKKKADFIATFLCQEKISTTSIHGDREQREREQALGDFRFGKCPVLVATSVAARGLDIENVQHVINFDLPSTIDEYVHRIGRTGRCGNTGRAISFFDLESDNHLAQPLVKVLTDAQQDVPAWLEEIAFSTYIPGFSGSTRGNVFASVDTRKGKSTLNTAGFSSSQAPNPVDDESWD
Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.
Mol. Weight
86.2 kDa
Protein Length
Full Length
Tag Info
C-terminal 6xHis-tagged
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
Liquid or 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
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.79.
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.
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
3-7 business days
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.
Troubleshooting and FAQs
Datasheet & COA
Please contact us to get it.
Images
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

Customer Reviews and Q&A

 Customer Reviews

Target Background

Function(From Uniprot)
ATP-dependent RNA helicase required during spermatogenesis. Required to repress transposable elements and preventing their mobilization, which is essential for the germline integrity. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and governs the methylation and subsequent repression of transposons. Involved in the secondary piRNAs metabolic process, the production of piRNAs in fetal male germ cells through a ping-pong amplification cycle. Required for PIWIL2 slicing-triggered piRNA biogenesis: helicase activity enables utilization of one of the slice cleavage fragments generated by PIWIL2 and processing these pre-piRNAs into piRNAs.
Gene References into Functions
  1. Four sterility-related genes, including BOLL, DDX4, HORMAD1, and MAEL, were found to have increased methylation at CpGs of the promoter regions and decreased mRNA expressions in nonobstructive azoospermia and hypospermatogenesis (HS) testis and are believed to be associated with HS. PMID:28342926
  2. positivity for DDX4 gene was detected in 17 of 39 males with nonobstructive azoospermia which was due to maturation arrest in 35.3% of cases, due to incomplete Sertoli cell only in 23.5% and due to complete Sertoli cell only in 41.2%. PMID:28000927
  3. Results suggest that DDX4 positively regulates cell cycle progression of diverse somatic-derived blood cancer cells, implying its broad contributions to the cancer cell phenotype. PMID:28612512
  4. DDX4 cell-free seminal mRNA was absent in 44% of Sertoli cell-only syndrome cases diagnosed by testicular histopathology, but present in all patients presenting with maturation arrest or hypospermatogenesis PMID:27211570
  5. The 20-mer peptide (residues 228-247) of human DDX-4, an ATP-dependent RNA helicase known to regulate germ cell development, binds to a unique shallow binding surface on RanBPM formed by highly conserved loops on the surface of the beta-sheet with two aspartates on one end, a positive patch on the opposite end, and a tryptophan lining at the bottom of the surface. PMID:27622290
  6. Data show that intrinsically disordered N terminus of DEAD-box RNA helicase Ddx4 forms organelles in HeLa cells and in vitro. PMID:25747659
  7. this study reports the first analysis and comparison of the expression patterns and colocalization of DDX4 and CD133 in 59 ovarian cancer patients via tissue microarray and immunofluorescence analysis to identify the expression patterns and relationship of those two markers in ovarian cancer cells. PMID:24727449
  8. Data suggest that VASA shows differential expression in ovary; in resting primordial follicle reserve in childhood/pre-puberty, VASA is associated with Balbiani's body space in germ cell; once follicle enters growing pool, VASA is undetectable. PMID:23315064
  9. Vasa/Ddx4 gene can be involved in regulation of ground and primed states of pluripotency PMID:22288104
  10. overexpression of VASA and or DAZL, in both embryonic and induced pluripotent stem cells promoted differentiation into primordial germ cells, and maturation and progression through meiosis was enhanced. PMID:22162380
  11. Report the generation/characterization of embryonic stem cell lines carrying a VASA-pEGFP-1 reporter construct that expresses GFP in a population of differentiating cells showing expression of characteristic markers of primordial germ cells. PMID:19937754
  12. marker for normal and malignant germ cells PMID:11850529
  13. The expression of VASA mRNA and protein was significantly decreased in the sperm of oligozoospermic men. PMID:17486274
  14. VASA showed a differential pattern of expression throughout the differentiation and proliferative phase and prophase I to finally associate with Balbiani's body in primordial and primary follicles. PMID:18534994
  15. Over-expression of VASA abrogates the G2 checkpoint, induced by DNA damage, by down-regulating the expression of 14-3-3sigma. Results suggest that VASA may play a role in the progression of ovarian cancer or serve as a valuable marker of tumorigenesis. PMID:18805576
  16. Highly methylated regions of the VASA gene are associated with maturation arrest phenotype in the testis. PMID:19629140

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Subcellular Location
Cytoplasm. Cytoplasm, perinuclear region.
Protein Families
DEAD box helicase family, DDX4/VASA subfamily
Tissue Specificity
Expressed only in ovary and testis. Expressed in migratory primordial germ cells in the region of the gonadal ridge in both sexes.
Database Links

HGNC: 18700

UNIGENE: Hs.223581

KEGG: hsa:54514

STRING: 9606.ENSP00000424838

OMIM: 605281

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