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p21蛋白抗体说明书 全：公司提供上万种产品，涵盖了生物试剂，elisa试剂盒，标准品，培养基，原装耗材，抗体、培养基、ATCC细胞等，基本上各种科研所需产品在我司都能找到。

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p21蛋白抗体说明书 英文名称  Anti-P21/CDKN1A

中文名称  p21蛋白抗体说明书 

别    名 Activating Fragment 1; CAP20; Cation chloride cotransporter-interacting protein 1; CDK Interacting Protein 1; CDK-interacting protein 1; CDKI; CDKN 1; CDKN1; CDKN1A; CIP1; Cyclin Dependent Kinase Inhibitor 1A; Cyclin-dependent kinase inhibitor 1; Cyclin-dependent kinase inhibitor 1A (P21); Cyclin-dependent kinase inhibitor 1A (p21, Cip1); DNA Synthesis Inhibitor; MDA 6; MDA-6; MDA6; Melanoma Differentiation Associated Protein 6; Melanoma differentiation-associated protein 6; Melanoma differentiation-associated protein; p21; P21 protein; p21CIP1; p21WAF; PIC1; SDI1; SLC12A9; WAF1; Wildtype p53 Activating Fragment 1; Wildtype p53-activated fragment 1.

产品属性：

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

产品类型   一抗  

研究领域     细胞生物 信号转导 细胞凋亡 细胞周期蛋白

蛋白分子量  predicted molecular weight: 18kDa 

性    状   Lyophilized or Liquid

免 疫 原  KLH conjugated synthetic peptide derived from human P21 C-terminus

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

p21蛋白抗体说明书 产品应用   ELISA=1:500-1000 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 This gene encodes a potent cyclin-dependent kinase inhibitor. The encoded protein binds to and inhibits the activity of cyclin-CDK2 or -CDK4 complexes, and thus functions as a regulator of cell cycle progression at G1. The expression of this gene is tightly controlled by the tumor suppressor protein p53, through which this protein mediates the p53-dependent cell cycle G1 phase arrest in response to a variety of stress stimuli. This protein can interact with proliferating cell nuclear antigen (PCNA), a DNA polymerase accessory factor, and plays a regulatory role in S phase DNA replication and DNA damage repair. This protein was reported to be specifically cleaved by CASP3-like caspases, which thus leads to a dramatic activation of CDK2, and may be instrumental in the execution of apoptosis following caspase activation. Two alternatively spliced variants, which encode an identical protein, have been reported. Two families of cyclin dependent kinase inhibitors (CKIs) have been identified. The p21WAF1/Cip1 family inhibits all kinases involved in the G1/S transition. The p16INK4a family inhibits Cdk4 and Cdk6 specifically.

Function : May be the important intermediate by which p53/TP53 mediates its role as an inhibitor of cellular proliferation in response to DNA damage. Binds to and inhibits cyclin-dependent kinase activity, preventing phosphorylation of critical cyclin-dependent kinase substrates and blocking cell cycle progression. Functions in the nuclear localization and assembly of cyclin D-CDK4 complex and promotes its kinase activity towards RB1. At higher stoichiometric ratios, inhibits the kinase activity of the cyclin D-CDK4 complex.

Subunit : Interacts with HDAC1; the interaction is prevented by competitive binding of C10orf90/FATS to HDAC1 facilitating acetylation and protein stabilization of CDKN1A/p21. Interacts with MKRN1. Interacts with PSMA3. Interacts with PCNA. Component of the ternary complex, cyclin D-CDK4-CDKN1A. Interacts (via its N-terminal domain) with CDK4; the interaction promotes the assembly of the cyclin D-CDK4 complex, its nuclear translocation and promotes the cyclin D-dependent enzyme activity of CDK4. Binding to CDK2 leads to CDK2/cyclin E inactivation at the G1-S phase DNA damage checkpoint, thereby arresting cells at the G1-S transition during DNA repair. Interacts with PIM1.

Subcellular Location : Cytoplasmic and Nuclear.

Post-translational modifications : Phosphorylation of Thr-145 by Akt or of Ser-146 by PKC impairs binding to PCNA. Phosphorylation at Ser-114 by GSK3-beta enhances ubiquitination by the DCX(DTL) complex. Phosphorylation of Thr-145 by PIM2 enhances CDKN1A stability and inhibits cell proliferation. Phosphorylation of Thr-145 by PIM1 results in the relocation of CDKN1A to the cytoplasm and enhanced CDKN1A protein stability.

Ubiquitinated by MKRN1; leading to polyubiquitination and 26S proteasome-dependent degradation. Ubiquitinated by the DCX(DTL) complex, also named CRL4(CDT2) complex, leading to its degradation during S phase or following UV irradiation. Ubiquitination by the DCX(DTL) complex is essential to control replication licensing and is PCNA-dependent: interacts with PCNA via its PIP-box, while the presence of the containing the 'K+4' motif in the PIP box, recruit the DCX(DTL) complex, leading to its degradation.

Acetylation leads to protein stability. Acetylated in vitro on Lys-141, Lys-154, Lys-161 and Lys-163. Deacetylation by HDAC1 is prevented by competitive binding of C10orf90/FATS to HDAC1.

Similarity : Belongs to the CDI family.

Database links :

UniProtKB/Swiss-Prot: P38936.3

Entrez Gene: 25792 Human

Entrez Gene: 68379 Mouse

Entrez Gene: 114851 Rat

Omim: 116899 Human

SwissProt: Q9ULV3 Human

SwissProt: Q8VEH2 Mouse

Unigene: 212395 Human

Unigene: 170508 Mouse

p21蛋白的过度表达与的类型、恶性度、分期以及的预后密切相关。主要用于胃肠道癌肿、、等的研究。

实验流程：

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技术外包服务:

★p21蛋白抗体说明书 分子生物学：质粒抽提、PCR、Q-PCR、RT-PCR、分子生物学：基因合成、引物合成、基因测序、载体构建等

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