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P21 Antibody (YA5474)

(Synonyms: Cyclin-dependent kinase inhibitor 1; CDK-interacting protein 1; Melanoma differentiation-associated protein 6; MDA-6; p21; )
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Based on 1 Customer Validation

P21 Antibody (YA5474) is a Mouse-derived and non-conjugated IgG1 monoclonal antibody, targeting to P21.

For research use only. We do not sell to patients.
  • Host:

    Mouse

  • Isotype:

    IgG

  • Application:

    IHC-P, WB, ICC/IF, ELISA

  • Reactivity :

    Human, Mouse

  • Formulation:

    Supplied in PBS, 50% glycerol, 0.05% Proclin 300, 0.05%BSA

  • Conjugation:
    Non-conjugated
  • Experimental Validation Results for P21 Antibody (YA5474)
  • P21 Antibody (YA5474) Product Image
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To place orders, for customer services and technical support, please contact: MedChemExpress USA

Tel: 609-228-6898 E-mail: [email protected] [email protected]

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Top Publications Citing

Use of MCE Products

Applications

Application
IHC-P Info
IHC-P: Immunohistochemistry-Paraffin
WB Info
WB: Western Blot
ICC/IF Info
ICC/IF: Immunocytochemistry/
Immunofluorescence
ELISA Info
ELISA: Enzyme Linked Immunosorbent Assay
Dilution Ratio 1:200-1000 1:500-2000 1:100-500 1:1000-5000

Product Details

Description

P21 Antibody (YA5474) is a Mouse-derived and non-conjugated IgG1 monoclonal antibody, targeting to P21.

  • Host Mouse
  • Clonality Monoclonal
  • Species Reactivity
    Human, Mouse
  • Observed Molecular Weight
    Observed band size: 21 kDa Info
    Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.
  • Calculated Molecular Weight Predicted band size: 21 kDa
Immunogen

Synthesized peptide derived from human p21 AA range: 1-100

Purification

Protein G

Conjugation

Non-conjugated

Modification

Unmodified

Isotype

IgG

Product Properties

  • Appearance

    Solution

  • Formulation

    Supplied in PBS, 50% glycerol, 0.05% Proclin 300, 0.05%BSA

  • Concentration

    Batch-dependent, Please check the COA for the concentration of each lot. Check Lot Concentration

  • Storage & Stability

    Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

  • Shipping

    Shipping with blue ice.

Verification Images

  • Experimental Validation Results for P21 Antibody (YA5474)
    Western blot analysis was performed on protein extracts (35 μg) from HeLa (lane 2), U87 (lane 3), HepG2 (lane 4), and SH-SY5Y (lane 5) using P21 antibody. Proteins were transferred onto a 0.45 μm PVDF membrane using the Trans-Blot® Turbo™ system for 13 min. The membrane was then blocked with 5% nonfat milk in TBST (HY-K1025) for 1 h at room temperature. The primary antibody (1:1000) and loading control antibody GAPDH Antibody (HRP) (HY-P80954A) (1:5000) were diluted in 5% nonfat milk in TBST and incubated with the membrane overnight at 4°C. After washing, the membrane of primary antibody was incubated with HRP-conjugated goat anti-rabbit/mouse IgG secondary antibody (HY-P8001/HY-P8004) (1:5000) diluted in 5% nonfat milk in TBST for 1 h at room temperature. Protein bands were visualized using an Ultra High Sensitivity ECL detection kit (HY-K1005).

Background

  • Function

    P21 plays an important role in controlling cell cycle progression and DNA damage-induced G2 arrest. 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. 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. 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[1][2].

  • Subcellular Localization

    Cytoplasm; Nucleus

  • Expression


    Tissue_specificity:It is expressed in all adult tissues, but the expression level in the brain is 5 times lower.

    Induction:Activated by p53/TP53, mezerein (antileukemic compound) and IFNB1. Repressed by HDAC1

  • Subunit

    Interacts with HDAC1; the interaction is prevented by competitive binding of C10orf90/FATS to HDAC1 facilitating acetylation and protein stabilization of CDKN1A/p21 (By similarity). Interacts with MKRN1 (PubMed:19536131). Interacts with PSMA3 (PubMed:11350925). Interacts with PCNA (PubMed:11595739, PubMed:18703516, PubMed:18794347, PubMed:8861913). 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 (PubMed:9106657). 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 (PubMed:19445729). Interacts with PIM1 (PubMed:12431783). Interacts with STK11 and NUAK1 (PubMed:25329316). Interacts wih DTL (PubMed:23213251). Interacts with isoform 1 and isoform 2 of TRIM39 (PubMed:23213251). Interacts with PKP3; the interaction sequesters CDKN1A to the cytoplasm thereby repressing its role as an inhibitor of CDK4- and CDK6-driven RB1 phosphorylation (By similarity)

  • SwissProt ID

    P38936

  • Gene ID
    1026 [NCBI]
  • Synonyms

    Cyclin-dependent kinase inhibitor 1; CDK-interacting protein 1; Melanoma differentiation-associated protein 6; MDA-6; p21;

[1]. LaBaer J, et al. New functional activities for the p21 family of CDK inhibitors. Genes Dev. 1997 Apr 1;11(7):847-62. [Content Brief]

[2]. Ducoux M, et al. Mediation of proliferating cell nuclear antigen (PCNA)-dependent DNA replication through a conserved p21(Cip1)-like PCNA-binding motif present in the third subunit of human DNA polymerase delta. J Biol Chem. 2001 Dec 28;276(52):49258-66. [Content Brief]

P21 Antibody (YA5474) Related Classifications

MOQ
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100 mg

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Measured by its ability to inhibit anti-CD3-induced proliferation of stimulated CTLL-2 mouse cytotoxic T cells. The ED50 this effect is 0.8023 μg/ml, corresponding to a specific activity is 1246.42 units/mg.

Assay Types
  • 1/16

    MedChemExpress Validation
     Western blot analysis was performed on protein extracts (35 μg) from HeLa (lane 2), U87 (lane 3), HepG2 (lane 4), and SH-SY5Y (lane 5) using P21 antibody. Proteins were transferred onto a 0.45 μm PVDF membrane using the Trans-Blot® Turbo™ system for 13 min. The membrane was then blocked with 5% nonfat milk in TBST (HY-K1025) for 1 h at room temperature. The primary antibody (1:1000) and loading control antibody GAPDH Antibody (HRP) (HY-P80954A) (1:5000) were diluted in 5% nonfat milk in TBST and incubated with the membrane overnight at 4°C. After washing, the membrane of primary antibody was incubated with HRP-conjugated goat anti-rabbit/mouse IgG secondary antibody (HY-P8001/HY-P8004) (1:5000) diluted in 5% nonfat milk in TBST for 1 h at room temperature. Protein bands were visualized using an Ultra High Sensitivity ECL detection kit (HY-K1005).

  • P21 Antibody (YA5474) Product Image
    1/16
  • Experimental Validation Results for P21 Antibody (YA5474)
  • P21 Antibody (YA5474) Product Image
  • Experimental Validation Results for P21 Antibody (YA5474)
    1/1
    MedChemExpress Validation
     Western blot analysis was performed on protein extracts (35 μg) from HeLa (lane 2), U87 (lane 3), HepG2 (lane 4), and SH-SY5Y (lane 5) using P21 antibody. Proteins were transferred onto a 0.45 μm PVDF membrane using the Trans-Blot® Turbo™ system for 13 min. The membrane was then blocked with 5% nonfat milk in TBST (HY-K1025) for 1 h at room temperature. The primary antibody (1:1000) and loading control antibody GAPDH Antibody (HRP) (HY-P80954A) (1:5000) were diluted in 5% nonfat milk in TBST and incubated with the membrane overnight at 4°C. After washing, the membrane of primary antibody was incubated with HRP-conjugated goat anti-rabbit/mouse IgG secondary antibody (HY-P8001/HY-P8004) (1:5000) diluted in 5% nonfat milk in TBST for 1 h at room temperature. Protein bands were visualized using an Ultra High Sensitivity ECL detection kit (HY-K1005).
  • Experimental Validation Results for P21 Antibody (YA5474)
  • P21 Antibody (YA5474) Product Image
    MedChemExpress Validation

    Western blot analysis was performed on protein extracts (35 μg) from HeLa (lane 2), U87 (lane 3), HepG2 (lane 4), and SH-SY5Y (lane 5) using P21 antibody. Proteins were transferred onto a 0.45 μm PVDF membrane using the Trans-Blot® Turbo™ system for 13 min. The membrane was then blocked with 5% nonfat milk in TBST (HY-K1025) for 1 h at room temperature. The primary antibody (1:1000) and loading control antibody GAPDH Antibody (HRP) (HY-P80954A) (1:5000) were diluted in 5% nonfat milk in TBST and incubated with the membrane overnight at 4°C. After washing, the membrane of primary antibody was incubated with HRP-conjugated goat anti-rabbit/mouse IgG secondary antibody (HY-P8001/HY-P8004) (1:5000) diluted in 5% nonfat milk in TBST for 1 h at room temperature. Protein bands were visualized using an Ultra High Sensitivity ECL detection kit (HY-K1005).

  • P21 Antibody (YA5474) Product Image WB