PIK3CA抗体特异性结合抗原：抗体本身不能直接溶解或杀伤带有特异抗原的靶细胞，通常需要补体或吞噬细胞等共同发挥效应以**病原微生物或导致病理损伤。然而，抗体可通过与病毒或**的特异性结合，直接发挥中和病毒的作用。
产品编号xy-2067R
英文名称PIK3CA
中文名称磷脂酰肌醇激酶催化亚单位A抗体
别 名PI3 kinase p110 subunit alpha; caPI3K; MGC142161; MGC142163; p110 alpha; p110 alpha; Phosphatidylinositol 3 kinase catalytic alpha polypeptide; Phosphatidylinositol 3 kinase catalytic 110 KD alpha; Phosphatidylinositol 4 5 bisphosphate 3 kinase catalytic subunit alpha isoform; Phosphoinositide 3 kinase catalytic alpha polypeptide; PI3 kinase p110 subunit alpha; PI3K; PI3KC A; PIK3C A; PIK3CA; PK3CA; PtdIns 3 kinase p110; PI3-kinase P110α; PI3-kinase p110 subunit alpha; PI 3 Kinase catalytic subunit alpha; PK3CA_HUMAN; PI3 kinase P110α.
JournalPMIDIFApplicationBioMed Research International (2014)249674012.8800WB
说 明 书50ul 100ul 200ul
研究领域肿瘤 细胞生物 **学 神经生物学 信号转导 细胞凋亡 激酶和磷酸酶
抗体来源Rabbit
克隆类型Polyclonal
PIK3CA抗体交叉反应 Human, Mouse, Rat, Chicken, Cow, Rabbit,
产品应用WB=1:500-2000 ELISA=1:500-1000 IHC-P=1:400-800 IHC-F=1:400-800 ICC=1:100-500 IF=1:100-500 （石蜡切片需做抗原修复）
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.
分 子 量117kDa
细胞定位细胞浆
性 状Lyophilized or Liquid
浓 度1mg/1ml
免 疫 原KLH conjugated synthetic peptide derived from human PI3KCA:961-1068/1068
亚 型IgG
纯化方法affinity purified by Protein A
储 存 液0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol.
PIK3CA抗体保存条件Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.
PubMedPubMed
产品介绍background:
PI3-Kinases (PI3-Ks) are a family of lipid kinases that are implicated in signal transduction. Phosphatidylinositol 3-kinase is composed of an 85 kDa regulatory subunit and a 110 kDa catalytic subunit. The p85 subunit localize PI3-K activity to the plasma membrane while the p110 subunit contains the catalytic domain of PI3-K which uses ATP to phosphorylate PtdIns, PtdIns4P and PtdInsP2. Four isoforms of p110 has been found; alpha, beta, gamma, and the delta subunit. The alpha isoform, also known as PI3KCA, is a transforming oncogene that was shown to have activating mutations in nine types of cancers such as colon, brain, breast and stomach.
Function:
PI3K that phosphorylates PtdIns, PtdIns4P and PtdIns(4,5)P2 to generate PIP3. PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Participates in cellular signaling in response to various growth factors. Involved in the activation of AKT1 upon stimulation by receptor tyrosine kinases ligands such as EGF, insulin, IGF1, VEGFA and PDGF. Involved in signaling via insulin-receptor substrate proteins. Essential in endothelial cell migration during vascular development through VEGFA signaling, possibly by regulating RhoA activity. Required for lymphatic vasculature development, possibly by binding to RAS and by activation by EGF and FGF2, but not by PDGF. Regulates invadopodia formation in breast cancer cells through the PDPK1-AKT1 pathway. Participates in cardiomyogenesis in embryonic stem cells through a AKT1 pathway. Participates in vasculogenesis in embryonic stem cells through PDK1 and protein kinase C pathway. Has also serine-protein kinase activity: phosphorylates PIK3R1, EIF4EBP1 and HRAS.
Subunit:
Heterodimer of a catalytic subunit PIK3CA and a p85 regulatory subunit (PIK3R1, PIK3R2 or PIK3R3). Interacts with IRS1 in nuclear extracts. Interacts with RUFY3. Interacts with RASD2. Interacts with APPL1. Interacts with HRAS1 and KRAS. Interaction with HRAS1/KRAS is required for PI3K pathway signaling and cell proliferation stimulated by EGF and FGF2.
DISEASE:
Defects in PIK3CA are associated with colorectal cancer (CRC) [MIM:114500]. Defects in PIK3CA are a cause of susceptibility to breast cancer (BC) [MIM:114480]. A common malignancy originating from breast epithelial tissue. Breast neoplasms can be distinguished by their histologic pattern. Invasive ductal carcinoma is by far the most common type. Breast cancer is etiologically and genetically heterogeneous. Important genetic factors have been indicated by familial occurrence and bilateral involvement. Mutations at more than one locus can be involved in different families or even in the same case.
Defects in PIK3CA are a cause of susceptibility to ovarian cancer (OC) [MIM:167000]. Ovarian cancer common malignancy originating from ovarian tissue. Although many histologic types of ovarian neoplasms have been described, epithelial ovarian carcinoma is the most common form. Ovarian cancers are often asymptomatic and the recognized signs and symptoms, even of late-stage disease, are vague. Consequently, most patients are diagnosed with advanced disease.
Defects in PIK3CA may underlie hepatocellular carcinoma (HCC) [MIM:114550]. Defects in PIK3CA are a cause of keratosis seborrheic (KERSEB) [MIM:182000]. A common benign skin tumor. Seborrheic keratoses usually begin with the appearance of one or more sharply defined, light brown, flat macules. The lesions may be sparse or numerous. As they initially grow, they develop a velvety to finely verrucous surface, followed by an uneven warty surface with multiple plugged follicles and a dull or lackluster appearance.
Similarity:
Belongs to the PI3/PI4-kinase family.
Contains 1 C2 PI3K-type domain.
Contains 1 PI3K-ABD domain.
Contains 1 PI3K-RBD domain.
Contains 1 PI3K/PI4K domain.
Contains 1 PIK helical domain.
SWISS:
P42336
Gene ID:
5290
PIK3CA抗体（antibody, Ab）是由效应B细胞（效应**B细胞）分泌，机体用于抵御外来物质，如病毒，**等抗原，结构呈“Y”字型的球状蛋白质，仅仅存在于脊椎动物的血液和B**细胞膜表面。凡是能够跟抗体结合的物质，均被称作抗原，因此对于抗抗体（能够结合抗体的抗体）来说，抗体本身也是一种抗原物质。
PIK3CA抗体普通抗体重链和轻链的结构
重链结构：普通的**球蛋白具有2条重链（H链），分子量约为50kD,有μ、δ、γ、ε和α五种重链亚型，对应的**球蛋白名称分别为IgM、IgG、IgA、IgD和IgE。
轻链结构： 普通**球蛋白具有2条轻链（L链），分子质量约25kDa，有κ链和λ链两种亚型，这两种轻链决定了Ig的亚型类别（IgG1，IgG2，IgG3，IgG4）。一个天然的Ig分子两条轻链总是相同的，但在同一个体内可存在分别带有κ或λ链的抗体分子。不同种属生物体内两型轻链的比例不同，正常人血清**球蛋白κ链：λ链约为2：1，而在小鼠的比例为20：1。
2.2抗体Fab段和Fc段
IgG经木瓜蛋白酶酶切后裂解为2个完全相同的Fab段和1个Fc段,每个Fab段都为单价,可与抗原结合但不会再发生凝集反应；经胃蛋白酶酶切后裂解为1个完整F(ab)2片段和碎片化的Fc片段,F(ab’)2片段为双价,可同时结合两个抗原表位。Fab段为抗原结合片段（fragment of antigen binding，Fab），相当于抗体分子的两个臂，由一个完整的轻链和重链的VH和CH1结构域组成。Fc段为可结晶段（fragment crystallizable，Fc）相当于Ig的CH2和CH3结构域，是Ig与效应分子或者细胞相互作用的部位。Fab段包含完整的可变区，以及恒定区的CH1区域。Fc段仅指Ig恒定区CH2和CH3的区域，相当于Y字结构下面那一部分。
合格 KRAS 原癌基因K-ras抗体
合格 AMPK alpha-1 腺苷单磷酸活化蛋白激酶α1/AMPK α 1抗体
合格 CD19 CD19抗体
合格 合格 CD86 CD86抗体
合格 TPOR 血小板生成素受体抗体
合格 LPA2 溶血磷脂酸受体蛋白2抗体
合格 合格 CD62L L选择素抗体
合格 Galectin-3 半乳糖凝集素3抗体
合格 合格 GLUT2 葡萄糖转运蛋白2抗体
合格 DCP 异常凝血酶原/脱-γ-羧基凝血酶原抗体
合格 Phospho-Smad1 (Ser463) 磷酸化细胞信号转导分子Smad-1抗体
合格 Syntrophin-2 互养蛋白2抗体
合格 NeuN 神经元核抗原抗体
合格 合格 TIMP-2 金属蛋白酶组织抑制因子-2抗体
合格 Delta Opioid Receptor D型受体抗体
合格 Dishevelled 2 蓬乱蛋白2抗体
合格 Pan Cytokeratin/p-CK 广谱细胞角蛋白PCK抗体
合格 Thrombopoietin 血小板生成素/巨核细胞集落刺激因子抗体
合格 Nanog 胚胎干细胞关键蛋白抗体
合格 CCL26 Signal peptide 嗜酸粒细胞趋化蛋白3抗体
合格 factor V 凝血因子5抗体
合格 chemerin 趋化素抗体
合格 VEGFR2 血管内皮生长因子受体2抗体
合格 Ghrelin 28 (n-octanoyl Ser26) 辛酰基化脑肠肽抗体
合格 Nanog 胚胎干细胞关键蛋白抗体
合格 合格 GPI 糖磷脂酰肌醇抗体