GRB2 Recombinant Monoclonal Antibody

Code CSB-RA981267A0HU
Size US$210
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Image
  • Western Blot
    Positive WB detected in: Hela whole cell lysate, MCF-7 whole cell lysate, Mouse Brain whole cell lysate, Rat Brain whole cell lysate
    All lanes: GRB2 antibody at 1:1000
    Secondary
    Goat polyclonal to rabbit IgG at 1/50000 dilution
    Predicted band size: 26, 21 kDa
    Observed band size: 28 kDa
  • IHC image of CSB-RA981267A0HU diluted at 1:100 and staining in paraffin-embedded human ovarian cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
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Product Details

Uniprot No.
Target Names
GRB2
Alternative Names
Growth factor receptor-bound protein 2 (Adapter protein GRB2) (Protein Ash) (SH2/SH3 adapter GRB2), GRB2, ASH
Species Reactivity
Human, Mouse, Rat
Immunogen
A synthesized peptide derived from human GRB2
Immunogen Species
Homo sapiens (Human)
Conjugate
Non-conjugated
Clonality
Monoclonal
Isotype
Rabbit IgG
Clone No.
6E1
Purification Method
Affinity-chromatography
Concentration
It differs from different batches. Please contact us to confirm it.
Buffer
Rabbit IgG in phosphate buffered saline, pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Form
Liquid
Tested Applications
ELISA, WB, IHC
Recommended Dilution
Application Recommended Dilution
WB 1:500-1:5000
IHC 1:50-1:200
Troubleshooting and FAQs
Storage
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Description

GRB2 is a positive regulator of Ras signaling downstream of many growth factor receptors. It is constitutively expressed in T cells and associates with LAT or the CD3 complex via Shc upon TCR stimulation. In addition to the involvement in basic cellular events such as cell growth, cell proliferation, and metabolism, GRB2 plays an important function in embryogenesis and malignant transformation. GRB2 signaling is critical for cell cycle progression and actin-based cell motility, and consequently, more complex processes such as epithelial morphogenesis, angiogenesis, and vasculogenesis.

The production of the recombinant GRB2 antibody includes extracting RNA from spleen cells that are derived from immunized animals, reversely transcribing the RNA into DNA, sequencing and screening antibody genes, amplifying the heavy chain and light chain genes of the antibody using PCR technology, linking and cloning the genes into a plasma vector, and introducing the vector clone into a mammalian cell for functional antibody expression. The recombinant GRB2 antibody was purified using Affinity-chromatography. It can be used to detect the GRB2 antibody from Human, Mouse, Rat in the ELISA, WB, IHC.

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Target Background

Function
Adapter protein that provides a critical link between cell surface growth factor receptors and the Ras signaling pathway.; Does not bind to phosphorylated epidermal growth factor receptor (EGFR) but inhibits EGF-induced transactivation of a RAS-responsive element. Acts as a dominant negative protein over GRB2 and by suppressing proliferative signals, may trigger active programmed cell death.
Gene References into Functions
  1. that miR-1258 can suppress NSCLC progression by targeting the GRB2/Ras/Erk pathway PMID: 30069987
  2. The binding site of miR-433-3p was identified in the 3'UTR region of GRB2. Western blotting and FQ-PCR showed that miR-433-3p inhibited the mRNA and protein expression of GRB2. PMID: 29730656
  3. study unravels a unique role of Grb2 in protecting the cytoskeletal architecture in AD-like conditions and presents a potential new strategy for controlling neurodegeneration PMID: 28360125
  4. M. tuberculosis-initiated human mannose receptor signaling regulates macrophage recognition and vesicle trafficking by gamma Fc receptors, Grb2, and SHP-1. PMID: 28978467
  5. Data indicate GRB2 as a direct target of miR-329 in pancreatic cancer cells, and expression of GRB2 was inversely correlated with miR-329 expression in pancreatic cancer patients. PMID: 26885689
  6. EGFR colocalization with GRB2 as assessed by PLA is not correlated with EGFR expression levels or mutation status, defining a patient group that may show EGFR pathway activation, as illustrated by its prognostic value. PMID: 27449805
  7. Low GRB2 expression is associated with Breast Cancer. PMID: 23826330
  8. ACTB, CDKN1B, GAPDH, GRB2, RHOA and SDCBP are potent reference genes in neuroendocrine tumors of the lung. PMID: 27802291
  9. Following phosphorylation of the tyrosine, the proteins growth factor receptor-bound protein 2 (Grb2), Grb2-related adaptor downstream of Shc (Gads), and p85 subunit of phosphoinositide 3-kinase may bind to pYMNM (where pY is phosphotyrosine) via their Src homology 2 (SH2) domains, leading to downstream signaling to distinct immune pathways. These three adaptor proteins bind to the same site on CD28 with variable affinity PMID: 27927989
  10. investigated the target and mechanism of miR-411-5p in breast cancer using mimic and inhibitor, and demonstrated the involvement of GRB2 and Ras activation PMID: 27264952
  11. The study presents EPR spectroscopic analysis of the binding of the wild-type and mutant Grb2 SH2 domains to the CSpYVNVQC peptide variant. These data confirm that the binding specificity of SH2 domains, even that of Grb2, results from multiple factors and does not depend merely on the nature of one particular residue. PMID: 26645482
  12. TGF-beta2 induces Grb2 to recruit PI3-K to TGF-RII that activates JNK/AP-1-signaling and augments invasiveness of Theileria-transformed macrophages. PMID: 26511382
  13. Genetic variation near GRB2 on chromosome 17q25.1 is associated with sight-threatening diabetic retinopathy. PMID: 26188370
  14. Only monomeric Grb2 is capable of upregulating MAP kinase signalling. The dimeric state is inhibitory to this process. The self-association/dissociation of Grb2 represents a switch that regulates MAP kinase activity and hence controls cancer progression. PMID: 26103942
  15. The immunoglobulin tail tyrosine motif in the cytoplasmic segments of membrane-bound IgGs acts as the principle signal amplifier by incorporating a Grb2-Btk signaling. PMID: 25413232
  16. findings show that regions outside of the consensus PxxPxR sites drive the high affinity association of GRB2 with SH3 domain ligands PMID: 26079855
  17. down-regulated molecule growth factor receptor-bound protein 2 (GRB2) was a prominent node in fourteen cell proliferation-related sub-pathways. PMID: 25659534
  18. GRB2 was an independent factor in prognosis of esophageal squamous cell carcinoma patients PMID: 25031732
  19. In addition, GRB2 and UBC were found to be hub nodes in the differentially expressed subnetwork and may be used as potential biomarkers or targets for the diagnosis of bladder cancer. PMID: 25688510
  20. The N-terminal SH3 domain of Grb2 specifically interacts with UVRAG, unlike the C-terminal SH3 domain. This interaction helps to understand the role of Grb2 in the autophagic maturation of vesicles. PMID: 24882360
  21. Knockdown of GRB2 suppressed LMTK3-induced CDC42 activation, blocked ITGA5 and ITGB1 expression promoted by the transcription factor serum response factor (SRF), and reduced invasive activity PMID: 24939894
  22. these results identify Grb2 and Shc as central signaling effectors of Met-driven progression of intestinal epithelial-derived cancers. Notably, they suggest that Grb2 may represent a promising target for the design of novel colorectal cancer therapies. PMID: 24708867
  23. SGEF interacts with Grb2. PMID: 24399467
  24. Trafficking of EGFR and Grb2 in living HeLa cells stimulated with low, physiological concentrations of EGFR ligands, was analyzed.. PMID: 24259669
  25. In neuronal cells, amyloid-beta protein precursor intracellular domain co-localizes with GRB2 in cell compartments. PMID: 24100123
  26. Recruitment of the adaptor protein Grb2 to EGFR tetramers. PMID: 24697349
  27. suppression of Grb2 expression in HepG2 cells improved hepatic steatosis, glucose metabolism, oxidative stress, and apoptosis induced by palmitic acid incubation partly though modulating the insulin signaling pathway. PMID: 23771793
  28. Epigenetic repression of miR-376c accelerated EGF-dependent cell migration through its target GRB2 in HuCCT1 cells. PMID: 23922722
  29. a central role for adaptor proteins p66Shc and Grb2 in the regulation of ARF1 and ARF6 activation in invasive breast cancer cells. PMID: 24407288
  30. A deficient lipid rafts recruitment of CD3zeta/ZAP-70/Grb2, and these proteins do not merge with GM1 within the lipid rafts. PMID: 23916875
  31. EGFR interacts with Grb2 in both constitutive and EGF-dependent manners, whereas the HER3-Grb2 interaction requires the heteromerization of EGFR and HER3. PMID: 23700486
  32. VP11/12 SFK-binding motifs recruit Lck and the activated Src family kinase then leads (directly or indirectly) to phosphorylation of additional motifs involved in recruiting p85, Grb2, and Shc. PMID: 23946459
  33. the N-terminal SH3-SH2 region of grb2 protein was in charge of binding with phosphorylated TIGIT. PMID: 23154388
  34. GRB2-mediated recruitment of THEMIS to LAT is essential for thymocyte development. PMID: 23460737
  35. Grb2 is thereby recruited into the plexin-B1 receptor complex and, through its SH3 domain, interacts with p190 RhoGAP and mediates RhoA deactivation. PMID: 22505611
  36. Grb2 exerts constitutive control over the mutually dependent activities of FGFR2 and Shp2. PMID: 23420874
  37. The discovery of a negative regulatory role for Grb2 reveals that this adaptor acts as a double-edged sword in the regulation of RTK signaling. PMID: 23131845
  38. The Dok-3/Grb2 protein signal module attenuates Lyn kinase-dependent activation of Syk kinase in B cell antigen receptor microclusters PMID: 23223229
  39. The results fit with a role of Grb2 in protein aggregation, achieving specificity by multivalent interactions, despite the relatively low affinity of single SH3 interactions. PMID: 23159538
  40. Grb2 interacts with ADAM12 and is required for ADAM12 internalization. PMID: 22882974
  41. intracellular Francisella tularensis novicida triggers temporal and early activation of Ras through the SOS2/GrB2/PKCalpha/PKCbetaI quaternary complex; Ras signalling by intracellular F. tularensis is essential for intracellular proliferation in the cytosol PMID: 20618341
  42. the negative loop on p38 is mediated by c-ABL phosphorylation at tyrosine 105 of the adaptor protein NCK1, while the phosphorylation at tyrosine 209 of GRB2 down-modulates ERK1/2 and JNKs signaling. PMID: 22327338
  43. T-cell antigen receptor (TCR)-mediated Erk activation requires RasGRP1, but not Grb2/Sos. PMID: 22344067
  44. Modeling and simulation of aggregation of membrane protein LAT with molecular variability in the number of binding sites for cytosolic Grb2-SOS1-Grb2 PMID: 22396725
  45. multiple binding sites within Sos1 provide a physical route for Grb2 to hop in a flip-flop manner from one site to the next through facilitated diffusion, and such rapid exchange forms the basis of cooperativity driving bivalent binding of Grb2 to Sos1 PMID: 22360309
  46. Hypoxia can induce the activation of cytoplasmic FAK, Grb2 and paxillin so as to regulate the migration, survival and proliferation of pulmonary artery smooth cells. PMID: 22094095
  47. Our data reliably define context-specific and time-dependent networks that form around GRB2 after stimulation, and reveal core and growth factor-selective complexes comprising 90 proteins identified as interacting with GRB2 in HEK293T cells. PMID: 21706016
  48. ACAP4 protein cooperates with Grb2 protein to orchestrate epidermal growth factor-stimulated integrin beta1 recycling in cell migration PMID: 22027826
  49. High-resolution crystal structures of Grb2-SH2 domain bound to AICD peptides reveal a unique mode of binding where the peptides assume a noncanonical conformation that is unlike other structures of AICD peptides bound to protein-tyrosine-binding domains PMID: 22001015
  50. RhoU physically associates with activated EGFR in a GRB2-dependent manner; suppression of GRB2 by RNA interference abrogates the interaction of RhoU with activated EGFR. PMID: 21508312

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Subcellular Location
Nucleus. Cytoplasm. Endosome. Golgi apparatus.
Protein Families
GRB2/sem-5/DRK family
Database Links

HGNC: 4566

OMIM: 108355

KEGG: hsa:2885

STRING: 9606.ENSP00000339007

UniGene: Hs.444356

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