|Application ||WB, IHC-P, E|
|Calculated MW||25287 Da|
|Antigen Region||20-50 aa|
|Other Names||GTPase ERas, E-Ras, Embryonic stem cell-expressed Ras, ERAS, HRAS2, HRASP|
|Target/Specificity||This ERAS antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 20~50 amino acids from the N-terminal region of human ERAS.|
|Format||Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS.|
|Storage||Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||ERAS Antibody (N-term) (A28) is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Ras proteins bind GDP/GTP and possess intrinsic GTPase activity. Plays an important role in the tumor-like growth properties of embryonic stem cells (By similarity).|
|Cellular Location||Cell membrane; Lipid-anchor; Cytoplasmic side|
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Ras proteins bind GDP/GTP and possess intrinsic GTPase activity. Point mutations of several amino acids of human RAS, including gly12, ala59, or glu63, render the protein constitutively active. Embryonic stem cell-expressed Ras (ERAS) has serine, alanine, and asparagine at the positions corresponding to gly12, ala59, and glu63 of human RAS, suggesting that it is constitutively active.The PI3K (phosphoinositide 3-kinase) pathway is important for proliferation, survival and maintenance of pluripotency in ES cells. The PI3K pathway is activated by growth factors and cytokines including insulin and leukaemia inhibitory factor. In addition to these exogenous factors, the PI3K pathway is endogenously activated by the constitutively active Ras family protein ERas (ES cell-expressed Ras). ERas null ES cells maintained pluripotency but show significantly reduced growth and tumorigenicity, which can be rescued by expression of ERas cDNA or by activated phosphatidylinositol 3-hydroxykinase. The transforming oncogene ERAS appears to be important in the tumor-like growth properties of ES cells.
Kameda,T., Stem Cells 23 (10), 1535-1540 (2005)
Takahashi,K., Nature 423 (6939), 541-545 (2003)
Miyoshi,J., Nucleic Acids Res. 12 (4), 1821-1828 (1984)
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