Phospho-FLT3 (Tyr969) (C24D9) Rabbit mAb

• 产品编号：CST-3463S      品牌：CST       原厂货号：3463S
• 产品分类：抗体 > 一抗 > 磷酸化抗体
• 应用分类：

描述：

磷酸化FLT3 (Tyr969) (C24D9) 兔单抗仅在Tyr969被磷酸化后才能检测到内源FLT3的存在。本抗体可能与其它酪氨酸磷酸化的蛋白发生交叉反应。（专利US Patent No. 7,183,385属于CST公司）单克隆抗体通过用多肽免疫动物得到，该磷酸化多肽是根据人的FLT3蛋白Tyr969附近的氨基酸序列合成的。FMS-相关的酪氨酸激酶3 (FLT3, 也称Flk2)是III型酪氨酸激酶受体家族的成员之一，其余成员包括c-Kit, PDGFR 和M-CSF 受体。FLT3表达在早期的造血前体细胞上，并支持造血系统的发育和分化（1,2）。FLT3结合其配体FL后激活，进而导致了酪氨酸酶自磷酸化和下游靶点酪氨酸磷酸化的级联反应（3）。FL刺激之后，FLT3就和PI3K激酶的p85亚基、 SHP2、 GRB2和Shc相关联（4-6）。Tyr589/591定位于FLT3的近膜区并对FLT3的酪氨酸激酶活性的调控有重要作用。20%的急性骨髓性白血病病人中发生FLT3内部串联重复 (ITDs)体细胞突变（7）。磷酸化FLT3 (Tyr969) (C24D9) 兔单抗对应之前未发表的FLT3的酪氨酸磷酸化位点Tyr969，该位点是Cell Signaling Technology (CST)公司利用LC-MS/MS平台PhosphoScan®技术在寻找磷酸化位点过程中发现的。FLT3的Tyr969磷酸化在各种白血病、淋巴癌和实体癌细胞系和组织中存在。

原厂资料：

Specificity / Sensitivity

Phospho-FLT3 (Tyr969) (C24D9) Rabbit mAb detects endogenous levels of FLT3 only when phosphorylated at Tyr969. The antibody may cross-react with other tyrosine-phosphorylated proteins. (US Patent No. 7,183,385 and foreign equivalents assigned to Cell Signaling Technology, Inc.)

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to the sequence surrounding Tyr969 of human FLT3.

Background

FMS-related tyrosine kinase 3 (FLT3, also called Flk2), is a member of the type III receptor tyrosine kinase family, which includes c-Kit, PDGFR and M-CSF receptors. FLT3 is expressed on early hematopoietic progenitor cells and supports growth and differentiation within the hematopoietic system (1,2). FLT3 is activated after binding with its ligand FL, which results in a cascade of tyrosine autophosphorylation and tyrosine phosphorylation of downstream targets (3). The p85 subunit of PI3 kinase, SHP2, GRB2 and Shc are associated with FLT3 after FL stimulation (4-6). Tyr589/591 is located in the juxtamembrane region of FLT3 and may play an important role in regulation of FLT3 tyrosine kinase activity. Somatic mutations of FLT3 consisting of internal tandem duplications (ITDs) occur in 20% of patients with acute myeloid leukemia (7).

Phospho-FLT3 (Tyr969) (C24D9) Rabbit mAb is directed against a previously unpublished FLT3 tyrosine phosphorylation site at Tyr969 that was identified at Cell Signaling Technology (CST) using PhosphoScan®, CST's MS/MS platform for phosphorylation site discovery. Phosphorylation of FLT3 at Tyr969 was observed in various leukemia, lymphoma and carcinoma cell lines and in tumors.

注意事项：

Storage: Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.