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p21 (CDKN1A) Antibody (C-term)
Purified Rabbit Polyclonal Antibody (Pab)
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Application 
| FC, IF, IHC-P, WB, E |
|---|---|
| Primary Accession | P38936 |
| Reactivity | Human |
| Host | Rabbit |
| Clonality | Polyclonal |
| Isotype | Rabbit IgG |
| Calculated MW | 18119 Da |
| Antigen Region | 134-164 aa |
| Gene ID | 1026 |
|---|---|
| Other Names | Cyclin-dependent kinase inhibitor 1, CDK-interacting protein 1, Melanoma differentiation-associated protein 6, MDA-6, p21, CDKN1A, CAP20, CDKN1, CIP1, MDA6, PIC1, SDI1, WAF1 |
| Target/Specificity | This p21 (CDKN1A) antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 134-164 amino acids from the C-terminal region of human p21 (CDKN1A). |
| Dilution | IF~~1:10~50 WB~~1:1000 IHC-P~~1:50~100 FC~~1:10~50 |
| Format | Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS. |
| Storage | Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles. |
| Precautions | p21 (CDKN1A) Antibody (C-term) is for research use only and not for use in diagnostic or therapeutic procedures. |
| Name | CDKN1A (HGNC:1784) |
|---|---|
| Function | 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). |
| Cellular Location | Cytoplasm. Nucleus |
| Tissue Location | Expressed in all adult tissues, with 5-fold lower levels observed in the brain |
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Provided below are standard protocols that you may find useful for product applications.
Background
CDKN1A is a potent cyclin-dependent kinase inhibitor. It binds to and inhibits the activity of cyclin-CDK2 or -CDK4 complexes, and thus functions as a regulator of cell cycle progression at G1. Expression 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.
References
Fukuchi, K., et al., Biochim. Biophys. Acta 1642(3):163-171 (2003).
Frouin, I., et al., J. Biol. Chem. 278(41):39265-39268 (2003).
Dupont, J., et al., J. Biol. Chem. 278(39):37256-37264 (2003).
Di Padova, M., et al., J. Biol. Chem. 278(38):36496-36504 (2003).
Bai, Y.Q., et al., Oncogene 22(39):7942-7949 (2003).
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