【D4GDI】重组人D4-GDI蛋白 | Recombina

【产品形式】：艾美捷为您提供的【D4GDI】重组人D4-GDI蛋白蛋白产品是Sterile Filtered clear solution. D4-GDI protein in 50mM Tris-acetate, pH7.5, 20% glycerol and 1mM EDTA.

【背景资料】：D4-GDI belongs to the family of Rho-GDIs or GDP-dissociation inhibitors for the Rho/Rac family of small G proteins; consisting of RhoGDI-1, D4 GDI/RhoGDI-2 and RhoGDI-3. It inhibits the release of GDP from the Rho proteins, essential for GTP-loading and activation of GTPase activity. D4-GDI is located in the cytoplasm and is involved in the regulation of the membrane association and dissociation cycle of Rho/Rac proteins. It is known to be a substrate for caspase 3 during Fas-mediated apoptosis. D4-GDI is expressed only in hematopoietic tissues, mainly in B and T cells, unlike RhoGDI which is expressed ubiquitously. D4-GDI plays a role in the regulation of lymphocyte activation, survival, and responsiveness. Expression of D4-GDI is also observed in cells of nonhematopoietic neoplasms, including ovarian and bladder cancer cells, suggestive of D4-GDI’s role in progression of human tumors. D4-GDI is expressed in human breast cancer cells. In different human breast cancer cell lines that were studied, cell lines with high invasive activities, for example MDA-MB-231, expressed higher D4-GDI than did weakly invasive and noninvasive cell lines. Intentional disruption of D4-GDI by steadily expressing small interfering RNA (siRNA) against D4-GDI transcripts successfully blocks the motility and invasive potential of MDA-MB-231 cells in vitro. Cells deficient of D4-GDI revert to a normal breast epithelial phenotype characterized by the formation of cysts with a central lumen when grown on Matrigel. D4-GDI reduction is linked to a down-regulation of the cell surface protein ?1-integrin and a loss of cell-matrix adhesion, suggestive of D4-GDI induction of cell invasion by controlling ?1-integrin expression. The expression of ?1-integrin and invasive activities are restored once there’s restitution of D4-GDI expression to the levels found in the parental MDA-MB-231 cells. Therefore it is suggested that D4-GDI may play a significant role in the regulation of breast cancer cell invasiveness.

以色列ProSpec-Tany公司专注于细菌来源重组蛋白质生产。其独有细菌和哺乳动物表达和蛋白折叠技术使其成为国际一流科研级蛋白供应商。ProSpec-Tany是世界上能提供蛋白种类最多公司之一。领先生产工艺和规模使其可以提供毫克到克级蛋白，价格优于同类公司。作为多家知名品牌代理，艾美捷与ProSpec一起为研究者们提供最好、最新细胞生物学研究工具而不断扩大产品及服务质量。更多特色试剂盒、特色抗体以及特色试剂等产品评论，请点击查看中国生命科学试剂产品评论网站。

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