英文名称Rabbit Anti-CDKN1A/p21 antibody
中文名称p21蛋白抗体
别 名CDN1A_HUMAN; Cyclin-dependent kinase inhibitor 1; CDKN1A; CAP20; CDKN1; CIP1; MDA6; MDA-6; PIC1; SDI1; WAF1; p21CIP1; CDK-interacting protein 1; Melanoma differentiation-associated protein 6 (MDA-6); 抗体来源Rabbit
克隆类型Polyclonal
交叉反应Human,Mouse,Rat (predicted: Cow,Chicken,Dog)
产品应用IHC-P=1:100-500,IHC-F=1:100-500,IF=1:100-500,Flow-Cyt=1μg/Test ,ICC/IF=1:100
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.
理论分子量18kDa
细胞定位细胞核 细胞浆
性 状Liquid
浓 度1mg/ml
免 疫 原KLH conjugated synthetic peptide derived from human P21: 101-164/164
亚 型IgG
纯化方法affinity purified by Protein A
缓 冲 液0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol.
保存条件Shipped at 4℃. Store at -20℃ for one year. Avoid repeated freeze/thaw cycles.
注意事项This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
PubMedPubMed
产品介绍This gene encodes a potent cyclin-dependent kinase inhibitor. The encoded protein binds to and inhibits the activity of cyclin-cyclin-dependent kinase2 or -cyclin-dependent kinase4 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, 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 cyclin-dependent kinase2, and may be instrumental in the execution of apoptosis following caspase activation. Mice that lack this gene have the ability to regenerate damaged or missing tissue. Multiple alternatively spliced variants have been found for this gene. [provided by RefSeq, Sep 2015]
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.
Tissue Specificity:
Expressed in all adult 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, 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.
SWISS:
P38936
Gene ID:
1026
