DDX4 (DEAD box protein 4, Vasa homolog)

DDX4 (DEAD/H BOX 4), also known as VASA. The deduced 724-amino acid VASA protein contains the 8 conserved domains found in all known DEAD box proteins. The amino acid sequence in this core region shows greater similarity to VASA homologs in other species than to other human DEAD box proteins. By radiation hybrid analysis, Castrillon et al. (2000) mapped the VASA gene to 5q. By fluorescence in situ hybridization, they refined the localization to 5q11.2-q12. This region is syntenic to the distal end of mouse chromosome 13, where the mouse VASA homolog (Ddx4) resides (Abe and Noce, 1997). Using a combination of proteomics, cytology, and functional analysis in C. elegans, Chu et al. (2006) reduced 1,099 proteins copurified with spermatogenic chromatin to 132 proteins for functional analysis.\n\nUniProt Number:\nQ9NQI0\n\nGene ID:\nDDX4\n\nApplications:\nSuitable for use in Western Blot, Immunohistochemistry (Paraffin and Frozen), and Immunocytochemistry.\n\nRecommended Dilution:\nOptimal dilutions to be determined by the researcher.\n\nStorage and Handling:\nStore at -20?C for one year. After reconstitution, store at 4?C for one month. Can also be aliquoted and stored frozen at -20?C for long term.\nAvoid repeated freezing and thawing. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

144443

Size

100ug

Applications

ICC, IHC, WB

Hosts

Rabbit

Reactivities

Hum, Mouse, Rat

Form

Supplied as a lyophilized powder. Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3. Reconstitution: Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

P Type

Pab

Purity

Purified by immunoaffinity chromatography.

Isotype

IgG

References

1. Abe, K., Noce, T. A DEAD-family protein gene, Ddx4, encoding a murine homolog of Drosophila vasa maps to the distal end of mouse chromosome 13. Mammalian Genome 8: 622-623, 1997.\n2. Castrillon, D. H., Quade, B. J., Wang, T. Y., Quigley, C., Crum, C. P. The human VASA gene is specifically expressed in the germ cell lineage. Proc. Nat. Acad. Sci. 97: 9585-9590, 2000. \n3. Chu, D. S., Liu, H., Nix, P., Wu, T. F., Ralston, E. J., Yates, J. R., III, Meyer, B. J. Sperm chromatin proteomics identifies evolutionarily conserved fertility factors. Nature 443: 101-105, 2006.\n

Additional Info

Recognizes human, mouse and rat DDX4. No crossreactivity with other proteins.