概述

  • 产品名称Anti-p21抗体
    参阅全部 p21 一抗
  • 描述
    兔多克隆抗体to p21
  • 特异性This antibody detects endogenous levels of p21Cip1 protein around Threonine 145.
  • 经测试应用适用于: WB, ELISAmore details
  • 种属反应性
    与反应: Human
  • 免疫原

    Synthesized non phosphopeptide derived from human p21 around the phosphorylation site of Threonine 145.

  • 阳性对照
    • HeLa cell extracts.

性能

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应用

Our Abpromise guarantee covers the use of ab47452 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

应用 Ab评论 说明
WB 1/500 - 1/1000. Detects a band of approximately 32 kDa (predicted molecular weight: 18 kDa).
ELISA 1/20000.

靶标

  • 功能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.
  • 组织特异性Expressed in all adult human tissues, with 5-fold lower levels observed in the brain.
  • 序列相似性Belongs to the CDI family.
  • 结构域The PIP-box K+4 motif mediates both the interaction with PCNA and the recuitment of the DCX(DTL) complex: while the PIP-box interacts with PCNA, the presence of the K+4 submotif, recruits the DCX(DTL) complex, leading to its ubiquitination.
    The C-terminal is required for nuclear localization of the cyclin D-CDK4 complex.
  • 翻译后修饰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.
    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.
  • 细胞定位Cytoplasm. Nucleus.
  • Information by UniProt
  • 数据库链接
  • 别名
    • CAP20 antibody
    • CDK-interacting protein 1 antibody
    • CDKI antibody
    • CDKN1 antibody
    • Cdkn1a antibody
    • CDN1A_HUMAN antibody
    • CIP1 antibody
    • Cyclin Dependent Kinase Inhibitor 1A antibody
    • Cyclin-dependent kinase inhibitor 1 antibody
    • Cyclin-dependent kinase inhibitor 1A (P21) antibody
    • Cyclin-dependent kinase inhibitor 1A (p21, Cip1) antibody
    • DNA Synthesis Inhibitor antibody
    • MDA-6 antibody
    • MDA6 antibody
    • Melanoma differentiation-associated protein 6 antibody
    • Melanoma differentiation-associated protein antibody
    • p21 antibody
    • P21 protein antibody
    • p21CIP1 antibody
    • p21Cip1/Waf1 antibody
    • p21WAF antibody
    • PIC1 antibody
    • SDI1 antibody
    • SLC12A9 antibody
    • WAF1 antibody
    • Wild type p53 activated fragment 1 (WAF1) antibody
    • Wild type p53 activated fragment 1 antibody
    • Wildtype p53-activated fragment 1 antibody
    see all

Anti-p21 antibody 图像

  • All lanes : Anti-p21 antibody (ab47452) at 1/500 dilution

    Lane 1 : 5-30 ug Extracts from HeLa cells treated with EGF. No peptide.
    Lane 2 : 5-30 ug Extracts from HeLa cells treated with EGF. Preincubated with synthesized peptide.


    Predicted band size : 18 kDa
    Observed band size : 32 kDa (why is the actual band size different from the predicted?)
  • ICC/IF image of ab47452 stained HeLa cells. The cells were 4% PFA fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab47452, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

Anti-p21 antibody (ab47452)参考文献

ab47452 has not yet been referenced specifically in any publications.

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