ELISA, Immunogen, SDS-PAGE, WB, Bioactivity testing in progress
Species
Homo sapiens (Human)
Nature
Recombinant
Endotoxin level
Please contact with the lab for this information.
Purity
>90% as determined by SDS-PAGE.
Predicted molecular weight
38.26 kDa
Form
Lyophilized
Storage buffer
Lyophilized from a solution in PBS pH 7.4, 0.02% NLS, 1 mM EDTA, 4% Trehalose, 1% Mannitol.
Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
Reconstitution
Reconstitute in sterile water for a stock solution. Adjust the volume of sterile water so that, after reconstitution, the final stock concentration matches the value indicated on the product label or datasheet.
RECONSTITUTION PROTOCOL
1. Allow the product to be reconstituted and the reconstitution diluent to reach room temperature.
2. Tap or briefly centrifuge the product vial before opening to dislodge any lyophilized material that may be dispersed on the wall or cap of the vial.
3. Use the diluent and stock concentration recommended in the product datasheet. If preparing a stock concentration higher than recommended, contact Technical Service.
4. After adding the diluent, re-cap the vial and invert gently by hand or place on a slow rocking platform to allow the reconstitution diluent to coat all the surfaces inside the vial. Note: Do not mix by vortexing or by pipetting the material up and down.
5. Allow the vial to sit at room temperature with gentle agitation for at least 15 minutes before aliquotting or using.
6. Store the reconstituted material in single use aliquots in polypropylene or siliconized tubes. Aliquots of 10 μL or larger are recommended.
Shipping
In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
Stability and Storage
Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for frequent use. Store at -20 to -80°C for twelve months from the date of receipt.
Alternate Names
HSJ-1, Heat shock protein J1, DNAJB2, Heat shock 40 kDa protein 3, DnaJ homolog subfamily B member 2, HSPF3, HSJ1
Background
DnaJ homolog subfamily B member 2 (DNAJB2) is a ~35 kDa protein. Functions as a co-chaperone, regulating the substrate binding and activating the ATPase activity of chaperones of the HSP70/heat shock protein 70 family. In parallel, also contributes to the ubiquitin-dependent proteasomal degradation of misfolded proteins. Thereby, may regulate the aggregation and promote the functional recovery of misfolded proteins like HTT, MC4R, PRKN, RHO and SOD1 and be crucial for many biological processes. Isoform 1 which is localized to the endoplasmic reticulum membranes may specifically function in ER-associated protein degradation of misfolded proteins.
1. Gao, XC. et al. (2012) The Journal of biological chemistry 287, 6044-52. PMID: 22219199
2. Cheetham, ME. et al. (1994) European journal of biochemistry 226, 99-107. PMID: 7957263
3. Westhoff, B. et al. (2005) Current biology : CB 15, 1058-64. PMID: 15936278
4. Gao, XC. et al. (2011) PloS one 6, e19763. PMID: 21625540
5. Chapple, JP. et al. (2003) The Journal of biological chemistry 278, 19087-94. PMID: 12754272
6. Rose, JM. et al. (2011) Human molecular genetics 20, 16-27. PMID: 20889486
7. Meimaridou, E. et al. (2011) Molecular endocrinology (Baltimore, Md.) 25, 1650-60. PMID: 21719532
8. Labbadia, J. et al. (2012) Brain : a journal of neurology 135, 1180-96. PMID: 22396390
9. Novoselov, SS. et al. (2013) PloS one 8, e73944. PMID: 24023695
Note
For research use only.
Images
SDS-PAGE
SDS-PAGE for Recombinant Human DNAJB2 Protein, N-GST & C-His
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