p21 Polyclonal antibody

p21 Polyclonal Antibody for WB, IF, ELISA

Host / Isotype

Rabbit / IgG


mouse, rat





Cat no : 28248-1-AP


CAP20, CDKI, Cdkn1, Cdkn1a, CIP1, mda6, P21, p21Cip1, p21WAF, SDI1, Waf1

Tested Applications

Positive WB detected inPC-12 cells, NIH/3T3 cells, DC2.4 cells, HSC-T6 cells, RAW 264.7 cells, Sp2/0 cells, Neuro-2a cells
Positive IF detected inNIH/3T3 cells

Recommended dilution

Western Blot (WB)WB : 1:500-1:2000
Immunofluorescence (IF)IF : 1:50-1:500
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

28248-1-AP targets p21 in WB, IF, IHC, ELISA applications and shows reactivity with mouse, rat samples.

Tested Reactivity mouse, rat
Cited Reactivitymouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen p21 fusion protein Ag28394
Full Name cyclin-dependent kinase inhibitor 1A (P21)
Calculated Molecular Weight 18 kDa
Observed Molecular Weight 18 kDa
GenBank Accession NumberNM_001111099
Gene Symbol p21
Gene ID (NCBI) 12575
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

CDKN1A (p21, CIP1, WAF1) is a cyclin-dependent kinase inhibitor. CDKN1A binds to and inhibits the activity of cyclin-CDK2 or -CDK4 complexes, and thus functions as a regulator of cell cycle progression at the G1 phase. The expression of CDKN1A is induced by wild-type but not mutant p53 protein, through which CDKN1A mediates the p53-dependent cell cycle G1 phase arrest in response to a variety of stress stimuli. CDKN1A can interact with proliferating cell nuclear antigen (PCNA), and plays a regulatory role in S phase DNA replication and DNA damage repair. CDKN1A 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.


Product Specific Protocols
WB protocol for p21 antibody 28248-1-APDownload protocol
IF protocol for p21 antibody 28248-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Bioact Mater

Chemo-immunotherapy by dual-enzyme responsive peptide self-assembling abolish melanoma

Authors - Yuhan Wang

Redox Biol

Deficiency of S100 calcium binding protein A9 attenuates vascular dysfunction in aged mice

Authors - Boying Zhao

Dev Cell

Endoderm development requires centrioles to restrain p53-mediated apoptosis in the absence of ERK activity.

Authors - Chang Xie

Int J Mol Sci

Revealing the Therapeutic Targets and Mechanism of Ginsenoside Rg1 for Liver Damage Related to Anti-Oxidative Stress Using Proteomic Analysis

Authors - Jiying Hou

Int Immunopharmacol

Aflatoxin B1 exposure triggers inflammation and premature skin aging via ERMCS/Ca2+/ROS signaling cascade

Authors - Deyi Wu

Ecotoxicol Environ Saf

Exploring the molecular mechanisms underlie the endoplasmic reticulum stress-mediated methylmercury-induced neuronal developmental damage

Authors - Jingjing Pan