Recombinant Human GADD45G Protein

Beta LifeScience SKU/CAT #: BLPSN-2181

Recombinant Human GADD45G Protein

Beta LifeScience SKU/CAT #: BLPSN-2181
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Product Overview

Tag N/A
Host Species Human
Accession O95257
Synonym CR6, DDIT2, GADD45gamma, GRP17
Background GADD45G, also known as CR6, is part of the nuclear proteins to interact with various proteins whose transcript levels are raised after stressful growth arrest conditions and treatment with DNA-damaging agents. GADD45G reacts to environmental stresses by mediating activation of the p38/JNK pathway which is mediated through their protein binding and activating MTK1/MEKK4 kinase, which is an upstream activator of both p38 and JNK MAPKs. GADD45G acts as a new-age tumor suppressor however is being frequently inactivated epigenetically in multiple tumors. GADD45G mRNA expression is down-regulated in hepatocellular carcinoma. GADD45G causes cell cycle arrest at G2/M transition when transfected into Hep-G2 cells. GADD45G induction by androgens involves new protein synthesis. Overexpression of GADD45G inhibits cell growth and causes morphological modifications in prostate cell lines thus GADD45G takes part in differentiation induction by androgens.
Description A DNA sequence encoding human GADD45G (O95257) (Met1-Glu159) was expressed.
Source E.coli
Predicted N Terminal Met
AA Sequence Met1-Glu159
Molecular Weight The recombinant human GADD45G consists of 159 a.a. and predicts a molecular mass of 17.1 KDa. It migrates as an approximately 17 KDa band in SDS-PAGE under reducing conditions.
Purity >95% as determined by SDS-PAGE
Endotoxin Please contact us for more information.
Bioactivity Please contact us for detailed information
Formulation Lyophilized from sterile PBS, pH 7.4..
Stability The recombinant proteins are stable for up to 1 year from date of receipt at -70°C.
Usage For Research Use Only
Storage Store the protein under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

Target Details

Target Function Involved in the regulation of growth and apoptosis. Mediates activation of stress-responsive MTK1/MEKK4 MAPKKK.
Protein Families GADD45 family
Database References

Gene Functions References

  1. In an Eastern Chinese population, carriers of GADD45G rs8252T variant genotypes had a significantly lower risk of NSCLC. rs8252 variant CT/TT carriers showed significantly higher levels of GADD45G mRNA expression than CC carriers in the target tissues. There was some evidence of interactions between rs8252 genotypes and sex in NSCLC risk. PMID: 27861856
  2. In contrast to solid tumors, in DLBCL, the frequency of GADD45gamma methylation is higher and may be associated with progression. Nodal involvement is more likely to be present in patients with unmethylated GADD45gamma. PMID: 25912017
  3. PAX5 was found to be an epigenetically inactivated tumor suppressor that inhibited non-small-cell lung proliferation and metastasis, through down-regulating the beta-catenin pathway and up-regulating GADD45G expression. PMID: 26843424
  4. GADD45G protein, human PMID: 26521045
  5. Results establish that the dowregulation of GADD45G-SIP1 axis may contribute to cellular senescence evasion and HCC development. PMID: 26378039
  6. we demonstrated that GADD45gamma expression in hepatocellular carcinoma cells was associated with sorafenib sensitivity PMID: 26172295
  7. demonstrate for the first time that miR-383 can specifically regulates the expression of Gadd45g by directly targeting to the 3-UTR region of Gadd45g mRNA, a regulatory process conserved in human tumor cells and mouse embryonic stem cells PMID: 25415264
  8. Expression of GADD45gamma was significantly higher in pituitary adenomas of female patients. PMID: 25126861
  9. Suggest that cucurbitacin E induced mitosis delay is regulated by GADD45gamma overexpression in malignant gliomas. PMID: 24577085
  10. GADD45G functions as a negative regulator of the Jak-Stat3 pathway and inhibits hepatocellular carcinoma by inducing cellular senescence. PMID: 23897841
  11. The gadd45g gene has both tumor suppressor and tumor promoter functions, dependent on the tissue/cell type and transforming event. (Review) PMID: 24104471
  12. Decreased expression and aberrant methylation of Gadd45G is associated with tumor progression in esophageal squamous cell carcinoma. PMID: 23793925
  13. Methylation-mediated repression of GADD45G expression is associated with gastric cardia adenocarcinoma. PMID: 23616123
  14. In addition, eight genes classified as 'second tier' hits in the original study (PAX7, THADA, COL8A1/FILIP1L, DCAF4L2, GADD45G, NTN1, RBFOX3 and FOXE1) showed evidence of linkage and association in this replication sample. PMID: 23512105
  15. Knock-down of GADD45gamma significantly attenuates TNF-a and IL-6 production in the human monocyte-macrophage THP-1 cell line as well as in human peripheral blood mononuclear cells PMID: 22752116
  16. clinically non-functioning adenomas had a significant decrease (P<0.001) in the relative levels of GADD45c expression (13 of 14 adenomas or 92%), compared to functioning adenomas (11 of 24 or 46%) PMID: 21850407
  17. Data show that mda-7/IL-24 activation leads to upregulation of growth arrest and DNA damage inducible (GADD) 45 alpha and gamma and JNK activation. PMID: 21931671
  18. These results reveal the mechanism of self-association by Gadd45 proteins and the importance of this self-association for their biological function PMID: 22058036
  19. The induction of GADD45gamma gene expression by 1,25-(OH)2D3 may mark therapeutic response in prostate cancer. PMID: 20739400
  20. Epigenetic regulation of GADD45G is associated with carcinogenesis in stomach, colorectal and pancreateic cancers. PMID: 20111973
  21. Flow cytometric analysis revealed significant G2/M arrest in cells transfected with either Gadd45alpha or Gadd45gamma. Importantly, we found that expression of either Gadd45alpha or Gadd45gamma activated P38 and JNK kinase pathways to induce G2/M arrest. PMID: 19048389
  22. a powerful growth suppressor controlling pituitary cell proliferation and the first identified gene whose expression is lost in the majority of human pituitary tumors. PMID: 11889197
  23. results suggest that CRIF1 is a novel nuclear protein that interacts with Gadd45 and may play a role in negative regulation of cell cycle progression and cell growth PMID: 12716909
  24. Data show that GADD45 gamma mRNA expression is down-regulated in hepatocellular carcinoma, and that GADD45 gamma causes cell cycle arrest at G2/M transition when transfected into Hep-G2 cells. PMID: 14672412
  25. GADD45g induction by androgens requires new protein synthesis; overexpression of GADD45g inhibited cell growth and caused morphological changes in prostate cell lines, arguing that GADD45g is involved in differentiation induced by androgens PMID: 15062559
  26. Inhibition of GADD45alpha and gamma in cancer cells by small interfering RNA abrogates apoptosis induction by the inhibitor of NF-kappaB PMID: 15353598
  27. Results show that GADD45G can act as a functional new-age tumor suppressor but being frequently inactivated epigenetically in multiple tumors. PMID: 16166418
  28. Establish MDA-7/IL-24 and GADD45alpha and GADD45gamma as critical mediators of apoptosis and growth arrest in response to NSAIDs in cancer cells. PMID: 17178890
  29. Human Gadd45gamma and its selenomethionine derivative were expressed in an Escherichia coli expression system and purified; they were then crystallized using the hanging-drop vapour-diffusion method. PMID: 18997345
  30. urinary GADD45gamma expression is associated with progression of renal disease PMID: 19293565


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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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