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Western Blot (WB) (Western blot analysis of p21Cip1 (Phospho-Thr57) using TNF-α treated HeLa whole cell lysates.-/+ means absence or presence of N peptide(non-phospho peptide) and P peptide(phospho peptide).)

Rabbit p21 Cip1 Polyclonal Antibody | anti-p21Cip1 antibody

Phospho-p21 Cip1 (Thr57) Antibody

Gene Names
CDKN1A; P21; CIP1; SDI1; WAF1; CAP20; CDKN1; MDA-6; p21CIP1
Reactivity
Human, Mouse, Rat
Predicted Reactivity: Bovine (100%), Horse (100%), Sheep (100%), Rabbit (100%), Dog (100%), Chicken (80%), Xenopus (80%)
Applications
Western Blot, Immunofluorescence, Immunocytochemistry, ELISA
Purity
The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
Synonyms
p21 Cip1; Polyclonal Antibody; Phospho-p21 Cip1 (Thr57) Antibody; CAP20; CDK-interacting protein 1; CDKI; CDKN1; Cdkn1a; CDN1A_HUMAN; CIP1; Cyclin Dependent Kinase Inhibitor 1A; Cyclin-dependent kinase inhibitor 1; Cyclin-dependent kinase inhibitor 1A (P21); Cyclin-dependent kinase inhibitor 1A (p21; Cip1); DNA Synthesis Inhibitor; MDA-6; MDA6; Melanoma differentiation-associated protein 6; Melanoma differentiation-associated protein; p21; P21 protein; p21CIP1; p21Cip1/Waf1; p21WAF; PIC1; SDI1; SLC12A9; WAF1; Wild type p53 activated fragment 1 (WAF1); Wild type p53 activated fragment 1; Wildtype p53-activated fragment 1; anti-p21Cip1 antibody
Ordering
For Research Use Only!
Host
Rabbit
Reactivity
Human, Mouse, Rat
Predicted Reactivity: Bovine (100%), Horse (100%), Sheep (100%), Rabbit (100%), Dog (100%), Chicken (80%), Xenopus (80%)
Clonality
Polyclonal
Isotype
Rabbit IgG
Specificity
Phospho-p21 Cip1 (Thr57) Antibody detects endogenous levels of p21 Cip1 only when phosphorylated at Thr57.
Tissue Specificity: Expressed in all adult tissues, with 5-fold lower levels observed in the brain.
Purity/Purification
The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
Form/Format
Liquid. Rabbit IgG in phosphate buffered saline, pH7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Concentration
1mg/ml (varies by lot)
Applicable Applications for anti-p21Cip1 antibody
Western Blot (WB), Immunofluorescence (IF), Immunocytochemistry (ICC), Peptide ELISA (EIA)
Application Notes
WB: 1:1000-3000
IF/ICC: 1:100-1:500
Peptide ELISA: 1:20,000-1:40,000
Immunogen
A synthesized peptide derived from human p21 Cip1 around the phosphorylation site of Thr57.
Conjugation
Unconjugated
Fragment
Fab fragment
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. 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).
Subunit Structure
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. 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. Interacts with STK11 and NUAK1. Interacts wih DTL. Interacts with isoform 1 and isoform 2 of TRIM39.
Similarity
The PIP-box K+4 motif mediates both the interaction with PCNA and the recruitment 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.Belongs to the CDI family.
Subcellular Location
Cytoplasm. Nucleus.
Preparation and Storage
Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of p21Cip1 (Phospho-Thr57) using TNF-α treated HeLa whole cell lysates.-/+ means absence or presence of N peptide(non-phospho peptide) and P peptide(phospho peptide).)

Western Blot (WB) (Western blot analysis of p21Cip1 (Phospho-Thr57) using TNF-α treated HeLa whole cell lysates.-/+ means absence or presence of N peptide(non-phospho peptide) and P peptide(phospho peptide).)

Immunofluorescence (IF)/Immunocytochemistry (ICC)

(Staining HeLa by IF/ICC. The sample were fixed with PFA and permeabilized in 0.1% Triton X-100,then blocked in 10% serum for 45 minutes at 25 degree C. The primary antibody was diluted at 1/200 and incubated with the sample for 1 hour at 37 degree C. An Alexa Fluor 594 conjugated goat anti-rabbit IgG (H+L) Ab, diluted at 1/600, was used as the secondary antibody.)

Immunofluorescence (IF)/Immunocytochemistry (ICC) (Staining HeLa by IF/ICC. The sample were fixed with PFA and permeabilized in 0.1% Triton X-100,then blocked in 10% serum for 45 minutes at 25 degree C. The primary antibody was diluted at 1/200 and incubated with the sample for 1 hour at 37 degree C. An Alexa Fluor 594 conjugated goat anti-rabbit IgG (H+L) Ab, diluted at 1/600, was used as the secondary antibody.)
Related Product Information for anti-p21Cip1 antibody
May be involved in p53/TP53 mediated inhibition 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. Inhibits DNA synthesis by DNA polymerase delta by competing with POLD3 for PCNA binding. Plays an important role in controlling cell cycle progression and DNA damage-induced G2 arrest.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Accession #
Molecular Weight
18,119 Da
NCBI Official Full Name
cyclin-dependent kinase inhibitor 1
NCBI Official Synonym Full Names
cyclin-dependent kinase inhibitor 1A (p21, Cip1)
NCBI Official Symbol
CDKN1A
NCBI Official Synonym Symbols
P21; CIP1; SDI1; WAF1; CAP20; CDKN1; MDA-6; p21CIP1
NCBI Protein Information
cyclin-dependent kinase inhibitor 1; DNA synthesis inhibitor; CDK-interacting protein 1; CDK-interaction protein 1; wild-type p53-activated fragment 1; melanoma differentiation associated protein 6
UniProt Protein Name
Cyclin-dependent kinase inhibitor 1
UniProt Gene Name
CDKN1A
UniProt Synonym Gene Names
CAP20; CDKN1; CIP1; MDA6; PIC1; SDI1; WAF1; MDA-6
UniProt Entry Name
CDN1A_HUMAN

NCBI Description

This gene encodes a potent cyclin-dependent kinase inhibitor. The encoded protein binds to and inhibits the activity of cyclin-CDK2 or -CDK4 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 (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. Multiple alternatively spliced variants have been found for this gene. [provided by RefSeq, Nov 2010]

Uniprot Description

p21Cip1: a cell-cycle regulatory protein that Interacts with cyclin-CDK2 and -CDK4, inhibiting cell cycle progression at G1. Its expression is tightly controlled by p53, through which this protein mediates the p53-dependent cell cycle arrest at G1 phase.

Protein type: Inhibitor; Cell cycle regulation

Chromosomal Location of Human Ortholog: 6p21.2

Cellular Component: nucleoplasm; intracellular membrane-bound organelle; perinuclear region of cytoplasm; cyclin-dependent protein kinase holoenzyme complex; nucleus; cytosol

Molecular Function: cyclin-dependent protein kinase inhibitor activity; cyclin binding; protein binding; cyclin-dependent protein kinase activating kinase activity; metal ion binding; ubiquitin protein ligase binding; protein complex binding

Biological Process: nerve growth factor receptor signaling pathway; response to arsenic; response to toxin; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; protein amino acid phosphorylation; negative regulation of cell proliferation; positive regulation of fibroblast proliferation; positive regulation of B cell proliferation; G2/M transition of mitotic cell cycle; cell cycle arrest; DNA damage response, signal transduction by p53 class mediator resulting in induction of apoptosis; response to corticosterone stimulus; response to X-ray; response to drug; epidermal growth factor receptor signaling pathway; organ regeneration; fibroblast growth factor receptor signaling pathway; phosphoinositide-mediated signaling; negative regulation of cyclin-dependent protein kinase activity; response to organic nitrogen; positive regulation of programmed cell death; response to hyperoxia; positive regulation of protein kinase activity; Ras protein signal transduction; cellular response to extracellular stimulus; regulation of protein import into nucleus, translocation; innate immune response; negative regulation of phosphorylation; mitotic cell cycle; regulation of cyclin-dependent protein kinase activity; negative regulation of cell growth; response to DNA damage stimulus; negative regulation of apoptosis; G1/S transition of mitotic cell cycle

Research Articles on p21Cip1

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Product Notes

The p21Cip1 cdkn1a (Catalog #AAA9614492) is an Antibody produced from Rabbit and is intended for research purposes only. The product is available for immediate purchase. The Phospho-p21 Cip1 (Thr57) Antibody reacts with Human, Mouse, Rat Predicted Reactivity: Bovine (100%), Horse (100%), Sheep (100%), Rabbit (100%), Dog (100%), Chicken (80%), Xenopus (80%) and may cross-react with other species as described in the data sheet. AAA Biotech's p21 Cip1 can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB), Immunofluorescence (IF), Immunocytochemistry (ICC), Peptide ELISA (EIA). WB: 1:1000-3000 IF/ICC: 1:100-1:500 Peptide ELISA: 1:20,000-1:40,000. Researchers should empirically determine the suitability of the p21Cip1 cdkn1a for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "p21 Cip1, Polyclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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