p21蛋白抗体

p21蛋白抗体

规格：1mg/1ml

英文名： CDKN1A

别名： p21; P21 protein; 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 Dep

分子量： 18kDa

储存液：0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glyce

克隆类型：Polyclonal

亚型：IgG

纯化方法：affinity purified by Protein A

**原：KLH conjugated synthetic peptide derived from human P21

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

p21蛋白抗体细胞定位：细胞核 细胞浆

产品介绍：background: 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 PIM1p21蛋白抗体. Subcellular Location: Cytoplasmic and Nuclear. Tissue Specificity: Expressed in all ***** tissues, with 5-fold lower levels observed in the brain. 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, leadingp21蛋白抗体 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. Gene ID: 1026 Database links: Entrez Gene: 1026 Human Entrez Gene: 12575 Mouse Entrez Gene: 114851 Rat Omim: 116899 Human SwissProt: P38936 Human SwissProt: P39689 Mouse Unigene: 370771 Human Unigene: 195663 Mouse Unigene: 10089 Rat Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. p21蛋白的过度表达与肿瘤的类型、恶性度、分期以及病人的预后密切相关。主要用于胃肠道癌肿、乳腺癌、肺癌等恶性肿瘤的研究。

p21蛋白抗体产品应用：ELISA=1:500-1000 IHC-P=1:100-500 IHC-F=1:100-500 Flow-Cyt=1:10-200 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.

研究领域：肿瘤  细胞生物  信号转导  细胞凋亡  细胞周期蛋白  

储存条件： Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.

来源： Rabbit

外观： Lyophilized or Liquid

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