Recombinant Human RALB Protein

Beta LifeScience SKU/CAT #: BLA-7621P

Recombinant Human RALB Protein

Beta LifeScience SKU/CAT #: BLA-7621P
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Product Overview

Host Species Human
Accession P11234
Synonym 5730472O18Rik dRalb GTP binding protein Ralb RALB_HUMAN RAS like protein B RAS like proto oncogene B Ras related GTP binding protein B Ras-related protein Ral-B V ral simian leukemia viral oncogene homolog B v ral simian leukemia viral oncogene homolog B (ras related GTP binding protein) v ral simian leukemia viral oncogene homolog B (ras related)
Description Recombinant Human RALB Protein was expressed in E.coli. It is a Full length protein
Source E.coli
Molecular Weight 26 kDa including tags
Purity Greater than 90% SDS-PAGE
Endotoxin < 1.0 EU per μg of the protein as determined by the LAL method
Formulation Liquid Solution
Stability The recombinant protein samples are stable for up to 12 months at -80°C
Reconstitution See related COA
Unit Definition For Research Use Only
Storage Buffer Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.

Target Details

Target Function Multifunctional GTPase involved in a variety of cellular processes including gene expression, cell migration, cell proliferation, oncogenic transformation and membrane trafficking. Accomplishes its multiple functions by interacting with distinct downstream effectors. Acts as a GTP sensor for GTP-dependent exocytosis of dense core vesicles. Required both to stabilize the assembly of the exocyst complex and to localize functional exocyst complexes to the leading edge of migrating cells. Required for suppression of apoptosis. In late stages of cytokinesis, upon completion of the bridge formation between dividing cells, mediates exocyst recruitment to the midbody to drive abscission. Involved in ligand-dependent receptor mediated endocytosis of the EGF and insulin receptors.
Subcellular Location Cell membrane; Lipid-anchor; Cytoplasmic side. Midbody.
Protein Families Small GTPase superfamily, Ras family
Database References

Gene Functions References

  1. our work provides new insight into the specific roles of Ras effector pathways in acute myeloid leukemia and has identified RALB signaling as a key survival pathway PMID: 27556501
  2. High RALB expression is associated with acute myeloid leukemia. PMID: 27991934
  3. Inhibition of Ral GTPases Using a Stapled Peptide Approach. PMID: 27334922
  4. These findings suggest that RalB might be one of the targets for facilitating the invasive phenotype of malignant gliomas induced by GGTase-I. PMID: 25573158
  5. High RALB mRNA expression is associated with non-small-cell lung cancer growth and progression. PMID: 24389431
  6. Integrin alpha(v)beta expression and the resulting KRAS-RalB-NF-kappaB pathway were both necessary and sufficient for tumour initiation, anchorage independence, self-renewal and erlotinib resistance. PMID: 24747441
  7. nutrient starvation induces RALB deubiquitylation by accumulation and relocalization of the deubiquitylase USP33 to RALB-positive vesicles PMID: 24056301
  8. a novel RalB-mediated biochemical and signaling mechanism for invadopodium formation PMID: 22331470
  9. Study finds that the Ras-like small G protein, RalB, is localized to nascent autophagosomes and is activated on nutrient deprivation. PMID: 21241894
  10. Non-phosphorylated RalB is associated with bladder cancer cell growth and metastasis. PMID: 20940393
  11. RALA and RALB collaborate to maintain tumorigenicity through regulation of both proliferation and survival; RALB is specifically required for survival of tumour cells but not normal cells PMID: 12856001
  12. These observations define the mechanistic contribution of RalGTPases to cancer cell survival and reveal the RalB/Sec5 effector complex as a component of TBK1-dependent innate immune signaling. PMID: 17018283
  13. RalB was found to mediate SDF-1-induced migration PMID: 18227351
  14. Backbone dynamics and the structure of free RalB bound to the GTP analogue GMPPNP were determined using NMR spectroscopy. PMID: 19166349
  15. 1H, 13C and 15N resonance assignments for the small G protein RalB in its active conformation. Backbone amide dynamics parameters for a majority of residues have also been obtained PMID: 19636851


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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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