AB134524

重组人 p21 蛋白 (denatured) (His tag N-Terminus)

Name: 重组人p21蛋白(denatured) (ab134524)| Abcam中文官网
Brand: Abcam Limited
SKU: AB134524
Price: 4870 CNY
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Recombinant Human p21 protein (denatured) (His tag N-Terminus)

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Recombinant Human p21 protein (denatured) (His tag N-Terminus) is a Human Full Length protein, in the 1 to 164 aa range, expressed in Escherichia coli, with >85%, suitable for SDS-PAGE.

查看别名

CAP20, CDKN1, CIP1, MDA6, PIC1, SDI1, WAF1, CDKN1A, Cyclin-dependent kinase inhibitor 1, CDK-interacting protein 1, Melanoma differentiation-associated protein 6, p21, MDA-6

1 Images

SDS-PAGE - Recombinant Human p21 protein (denatured) (His tag N-Terminus) (AB134524)

SDS-PAGE

Unknown

SDS-PAGE - Recombinant Human p21 protein (denatured) (His tag N-Terminus) (AB134524)

15% SDS-PAGE analysis of 3 μg ab134524.

关键信息

纯度

>85% SDS-PAGE

表达系统

Escherichia coli

应用

SDS-PAGE

applications

生物活性

访问

P38936

不含动物源

不含载体蛋白

种属

Human

存储溶液

pH: 8 Constituents: 12.01% Urea, 10% Glycerol (glycerin, glycerine), 0.58% Sodium chloride, 0.32% Tris HCl

storage-buffer

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反应性数据

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }

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序列信息

[{"sequence":"MGSSHHHHHHSSGLVPRGSHMSEPAGDVRQNPCGSKACRRLFGPVDSEQLSRDCDALMAGCIQEARERWNFDFVTETPLEGDFAWERVRGLGLPKLYLPTGPRRGRDELGGGRRPGTSPALLQGTAEEDHVDLSLSCTLVPRSGEQAEGSPGGPGDSQGRKRRQTSMTDFYHSKRRLIFSKRKP","proteinLength":"Full Length","predictedMolecularWeight":"20.2 kDa","actualMolecularWeight":null,"aminoAcidEnd":164,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":"Escherichia coli","accessionNumber":"P38936","tags":[{"tag":"His","terminus":"N-Terminus"}]}]

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性能和储存信息

运输条件

Blue Ice

分装信息

Upon delivery aliquot

储存信息

Avoid freeze / thaw cycle

False

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补充信息

This supplementary information is collated from multiple sources and compiled automatically.

The p21 protein also known as CDKN1A is an important regulator of cell cycle progression. It acts as a cyclin-dependent kinase inhibitor where it binds to and inhibits the activity of cyclin-CDK2 or -CDK4 complexes. The molecular weight of p21 is approximately 21 kDa. Cellular expression of p21 is diverse; it occurs in various tissues reflecting its broad role in maintaining cell cycle control. This protein's expression level is often assessed using techniques such as p21 western blotting p21 ELISA and p21 IHC staining.

Biological function summary

P21 plays a critical role in cell cycle regulation and DNA damage response. It associates with the p53 tumor suppressor protein forming an essential part of the p53 signaling pathway under stress conditions. p21 arrests cells in G1 phase allowing DNA repair or leading to cellular senescence. Through these mechanisms p21 integrates signals from stress and damage emphasizing its importance as a mediator in cellular checkpoint control.

Pathways

P21 is closely involved in the p53 and the Transforming Growth Factor-beta (TGF-β) signaling pathways. This integration helps in transmitting growth-inhibitory signals. p21 interacts with proteins such as p53 and cyclins ensuring precise regulation of the cell cycle and growth arrest when necessary. Triggered by p53 activation p21 contributes to preventing undisturbed cell proliferation acting as a safeguard against tumor formation.

P21's deregulation associates with cancer and age-related diseases. Its impairment is a common feature in many cancers often linked with defects in the p53 pathway. Reduced p21 expression can contribute to unchecked cell division and tumor progression. Moreover in age-related diseases p21's role in promoting cellular senescence connects it with degenerative conditions. The intricate relationship between p21 and proteins such as p53 and cyclins highlights its potential as a therapeutic target for these disorders.

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特殊说明

形式

Liquid

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常规信息

功能

Plays an important role in controlling cell cycle progression and DNA damage-induced G2 arrest (PubMed : 9106657). Involved in p53/TP53 mediated inhibition of cellular proliferation in response to DNA damage. Also involved in p53-independent DNA damage-induced G2 arrest mediated by CREB3L1 in astrocytes and osteoblasts (By similarity). 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. Inhibits DNA synthesis by DNA polymerase delta by competing with POLD3 for PCNA binding (PubMed : 11595739). Negatively regulates the CDK4- and CDK6-driven phosphorylation of RB1 in keratinocytes, thereby resulting in the release of E2F1 and subsequent transcription of E2F1-driven G1/S phase promoting genes (By similarity).

序列相似性

Belongs to the CDI family.

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. 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. UV radiation-induced phosphorylation at Thr-80 by LKB1 and at Ser-146 by NUAK1 leads to its degradation.. 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. Ubiquitination at Ser-2 leads to degradation by the proteasome pathway. Ubiquitinated by RNF114; leading to proteasomal 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 (By similarity).

亚细胞定位

Nucleus

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产品实验方案

Visit the General protocols
Visit the Troubleshooting

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靶点信息

See full target information CDKN1A

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重组人 p21 蛋白 (denatured) (His tag N-Terminus)

Recombinant Human p21 protein (denatured) (His tag N-Terminus)

SDS-PAGE - Recombinant Human p21 protein (denatured) (His tag N-Terminus) (AB134524)

关键信息

纯度

表达系统

标签

应用

生物活性

访问

不含动物源

不含载体蛋白

种属

存储溶液