抗体的生物素化标记实验要点：

1. 磷脂酰肌醇激酶抗体费用 如在反应混合液中有叠氮钠或游离氨基存在,会抑制标记反应。因此,蛋白质在反应前要对 0.1mol/L碳酸氢钠缓冲液或0.5mol/L硼酸缓冲液充分透析；

2.所用的NHSB及待生物素化蛋白质之间的分子比按蛋白质表面的ε-氨基的密度会有所不同,选择不当则影响标记的效率,应先用几个不同的分子比来筛选最适条件；

3.用NHSB量过量也是不利的,抗原的结合位点可能因此被封闭,导致抗体失活；

4.由于抗体的氨基不易接近可能造成生物素化不足,此时可加入去污剂如 Triton x-100, Tween20等；

5.当游离ε-氨基(赖氨酸残基的氨基)存在于抗体的抗原结合位点时,或位于酶的催化位点时,生物素化会降低或损伤抗体蛋白的结合力或活性；

6.生物素还可能与不同的功能基团,如羰基、氨基、巯基、异咪唑基及*基,也可与糖基共价结合；

7.交联反应后,应充分透析,否则,残余的生物素会对生物素化抗体与亲和素的结合产生竞争作用；

8.在细胞的荧光标记实验中,中和亲和素的本底低,但由于链霉亲和素含有少量正电荷,故对某些细胞可导致高本底。

产品订购信息：
英文名称  Anti-PI3K/PI3 kinase p85 alpha subunit 

中文名称   磷脂酰肌醇激酶抗体费用 

别    名  GRB1; p50 alpha; p55 alpha; p85 alpha; p85; Phosphatidylinositol 3 kinase associated p85 alpha; Phosphatidylinositol 3 kinase regulatory 1; Phosphatidylinositol 3 kinase regulatory alpha subunit; Phosphoinositide 3 kinase regulatory subunit polypeptide 1 (p85 alpha); PI3 kinase p85 alpha subunit; PI3 kinase p85 subunit alpha; PI3K ; PIK3R1; PtdIns 3 kinase p85 alpha; SH3_PI3K_p85alpha; P85A_HUMAN.

浓    度   1mg/1ml

规 格  0.1ml/100μg 0.2ml/200μg

抗体来源   Rabbit

克隆类型   polyclonal

交叉反应   Human, Mouse, Rat, Chicken, Dog, Cow, Horse 

产品类型   一抗  

研究领域     细胞生物 免疫学 神经生物学 信号转导 细胞凋亡 激酶和磷酸酶

蛋白分子量  predicted molecular weight: 80kDa

性    状   Lyophilized or Liquid

免 疫 原 KLH conjugated synthetic peptide derived from human PI3 kinase p85 subunit alpha (560-710aa) 

亚    型   IgG

纯化方法   affinity purified by Protein A

储 存 液   0.01M PBS, pH 7.4 with 10 mg/ml BSA and 0.1% Sodium azide

磷脂酰肌醇激酶抗体费用 产品应用    WB=1:100-500 ELISA=1:500-1000 IP=1:20-100 IHC-P=1:100-500 IHC-F=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.  

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. 

Important Note  This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. 

产品介绍 The enzyme phosphatidylinositol 3 kinase (PI3 kinase) is a lipid kinase that generates phosphatidylinositol 3, 4, 5-triphosphate in response to receptor activation in many signal transduction pathways. Class IA PI3Ks exist as a heterodimer of a catalytic 110 kDa (p110) and a regulatory p85 subunit (e.g. p85 alpha). p85 alpha is an adaptor molecule that regulates the activity of the catalytic p110 subunit by binding to phosphorylated receptor tyrosine kinases (RTKs) through its SH2 domain and mediating the interaction between p110 and the plasma membrane. p85 alpha is necessary for insulin-stimulated increase in glucose uptake and glycogen synthesis in insulin-sensitive tissues.

Function : Binds to activated (phosphorylated) protein-Tyr kinases, through its SH2 domain, and acts as an adapter, mediating the association of the p110 catalytic unit to the plasma membrane. Necessary for the insulin-stimulated increase in glucose uptake and glycogen synthesis in insulin-sensitive tissues.

Subunit : Heterodimer of a regulatory subunit PIK3R1 and a p110 catalytic subunit (PIK3CA, PIK3CB or PIK3CD). Interacts with FER. Interacts (via SH2 domain) with TEK/TIE2 (tyrosine phosphorylated). Interacts with PTK2/FAK1 (By similarity). Interacts with phosphorylated TOM1L1. Interacts with phosphorylated LIME1 upon TCR and/or BCR activation. Interacts with SOCS7. Interacts with RUFY3. Interacts (via SH2 domain) with CSF1R (tyrosine phosphorylated). Interacts with LYN (via SH3 domain); this enhances enzyme activity. Interacts with phosphorylated LAT, LAX1 and TRAT1 upon TCR activation. Interacts with CBLB. Interacts with HIV-1 Nef to activate the Nef associated p21-activated kinase (PAK). This interaction depends on the C-terminus of both proteins and leads to increased production of HIV. Interacts with HCV NS5A. The SH2 domains interact with the YTHM motif of phosphorylated INSR in vitro. Also interacts with tyrosine-phosphorylated IGF1R in vitro. Interacts with CD28 and CD3Z upon T-cell activation. Interacts with IRS1 and phosphorylated IRS4, as well as with NISCH and HCST. Interacts with FASLG, KIT and BCR. Interacts with AXL, FGFR1, FGFR2, FGFR3 and FGFR4 (phosphorylated). Interacts with FGR and HCK. Interacts with PDGFRA (tyrosine phosphorylated) and PDGFRB (tyrosine phosphorylated). Interacts with ERBB4 (phosphorylated). Interacts with NTRK1 (phosphorylated upon ligand-binding).

Tissue Specificity : Isoform 2 is expressed in skeletal muscle and brain, and at lower levels in kidney and cardiac muscle. Isoform 2 and isoform 4 are present in skeletal muscle (at protein level).

Phosphorylated. Tyrosine phosphorylated in response to signaling by FGFR1, FGFR2, FGFR3 and FGFR4. Phosphorylated by CSF1R. Phosphorylated by ERBB4. Phosphorylated on tyrosine residues by TEK/TIE2. Dephosphorylated by PTPRJ. Phosphorylated by PIK3CA at Ser-608; phosphorylation is stimulated by insulin and PDGF. The relevance of phosphorylation by PIK3CA is however unclear. Phosphorylated in response to KIT and KITLG/SCF. Phosphorylated by FGR.

Similarity : Belongs to the PI3K p85 subunit family.

Contains 1 Rho-GAP domain.

Contains 2 SH2 domains.

Contains 1 SH3 domain.

Database links : UniProtKB/Swiss-Prot: P27986.2

Entrez Gene: 5295 Human

Entrez Gene: 18708 Mouse

Entrez Gene: 25513 Rat

Omim: 171833 Human

SwissProt: P27986 Human

SwissProt: P26450 Mouse

SwissProt: Q63787 Rat

Unigene: 132225 Human

激酶和磷酸酶（Kinases and Phosphatases）

抗体的鉴定：

1）磷脂酰肌醇激酶抗体费用 抗体的效价鉴定：不管是用于诊断还是用于,制备抗体的目的都是要求较高效价。不同的抗原制备的抗体,要求的效价不一。鉴定效价的方法很多,包括有试管凝集反应,琼脂扩散试验,酶联免疫吸附试验等。常用的抗原所制备的抗体一般都有约成的鉴定效价的方法,以资比较。如制备抗抗体的效价,一般就采用琼脂扩散试验来鉴定。

2）抗体的特异性鉴定：抗体的特异性是指与相应抗原或近似抗原物质的识别能力。抗体的特异性高,它的识别能力就强。衡量特异性通常以交叉反应率来表示。交叉反应率可用竞争抑制试验测定。以不同浓度抗原和近似抗原分别做竞争抑制曲线,计算各自的结合率,求出各自在IC50时的浓度,并按公式计算交叉反应率。 

如果所用抗原浓度IC50浓度为pg/管,而一些近似抗原物质的IC50浓度几乎是无穷大时,表示这一抗血清与其他抗原物质的交叉反应率近似为0,即该血清的特异性较好。

3）抗体亲和力：是指抗体和抗原结合的牢固程度。亲和力的高低是由抗原分子的大小,抗体分子的结合位点与抗原决定簇之间立体构型的合适度决定的。有助于维持抗原抗体复合物稳定的分子间力有氢键,疏水键,侧链相反电荷基因的库仑力,范德华力和空间斥力。亲和力常以亲和常数K表示,K的单位是L/mol。抗体亲和力的测定对抗体的筛选,确定抗体的用途,验证抗体的均一性等均有重要意义。

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Rhesus antibody Rh CCDC160 卷曲螺旋结构域蛋白160抗体 规格 0.2ml

A/H1N1-M2 Human(Avian influenza Matrix Protein-2 Human) A型人病毒H1N1-M2蛋白多肽 0.5mg

HYPE 英文名称： 舞蹈症蛋白相互作用蛋白13抗体 0.2ml

Rhesus antibody Rh SMAD9 SMAD家族9抗体 规格 0.2ml

Anti-KLK14/FITC 荧光素标记激肽释放酶14抗体IgGMulti-class antibodies规格： 0.2ml

PPP1R1A(Human protein phosphatase 1 regulatory subunit A) ELISA Kit 人蛋酸酶1调控/抑制因子亚基1AMulti-class antibodies规格： 48T

Anti-phosphos-PCNA (Tyr211) 磷酸化增殖细胞核抗原抗体Multi-class antibodies规格： 0.1ml

Rhesus antibody Rh HMW Kininogen 高分子量激肽原重链抗体 规格 0.2ml

ARA(Human anti-gastric parietal cell antibody) ELISA Kit 人抗网硬蛋白抗体 96T

PGGT1B 英文名称： 香叶烯基转移酶1β抗体 0.2ml

CRISP3 英文名称： 富含半胱酸分泌蛋白3抗体 0.2ml

Anti-phosphos-PCNA (Tyr211) 磷酸化增殖细胞核抗原抗体Multi-class antibodies规格： 0.1ml

SmIg(Human Surface Membrane Immunoglobulin) ELISA Kit 人细胞膜表面免疫球蛋白Multi-class antibodies规格： 48T

Anti-PTN 多效生长因子抗体Multi-class antibodies规格： 0.2ml

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Cyclin-D1 ELISA Kit 大鼠细胞周期素D1 96T

Phospho-p73(Tyr99) 英文名称： 磷酸化P73抑制基因抗体 0.1ml

Bcl-10 英文名称： Bcl-10抗体 0.1ml

Anti-PTN 多效生长因子抗体Multi-class antibodies规格： 0.2ml

CL-0210SiHa(人子宫颈鳞癌细胞)5×106cells/瓶×2

REG4 Others Human 人 REG4 / RELP / GISP CHO细胞裂解液 (阳性对照)

人真皮平滑肌细胞cDNAHDLEC cDNA

猪肾细胞;PK-15 子宫内膜腺癌细胞，HEC-1-B细胞 Fc细胞，615小鼠前瘤株

人胚肾细胞;293FT

HA Others H1N1 甲型 H1N1 (A/WSN/1933) 血凝素 (Hemagglutinin / HA) 人细胞裂解液 (阳性对照)

CL-0208SH-SY5Y(人神经母细胞瘤细胞)5×106cells/瓶×2

RAC1 Others Human 人 RAC1 / MIG5 杆状病毒-昆虫细胞裂解液 (阳性对照)

人小胶质细胞cDNAHM cDNA

A549细胞，人 人低分化,SK-LU-1细胞 平滑肌细胞Many types of cells包装：5 × 105次方(1ml)

犬肾细胞;MDCK(NBL-2)

PLAT Others Human 人 tPAβ 人细胞裂解液 (阳性对照)

磷脂酰肌醇激酶抗体费用 CPLX3 Others Human 人 CPLX3 / Complexin 3 人细胞裂解液 (阳性对照)

CM-H069人膀胱平滑肌细胞完全培养基100mL

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Hs 683细胞，人脑视神经细胞 人癌细胞,MDA-MB-468细胞 动物上皮细胞培养基EpiCM-a

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LXN Others Human 人 Latexin / LXN / TCI 人细胞裂解液 (阳性对照)