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05-345

Sigma-Aldrich

Anti-p21/WAF1/Cip1 Antibody

Upstate®, from mouse

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Synonym(s):
CDK-interacting protein, CDK-interaction protein, DNA synthesis inhibitor, Melanoma differentiation-associated protein 6, cyclin-dependent kinase inhibitor 1A, melanoma differentiation associated protein 6, wild-type p53-activated fragment 1
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

CP36, monoclonal
CP74, monoclonal

species reactivity

mouse, human

manufacturer/tradename

Upstate®

technique(s)

immunoprecipitation (IP): suitable
western blot: suitable

isotype

IgG

NCBI accession no.

UniProt accession no.

shipped in

dry ice

target post-translational modification

unmodified

Gene Information

human ... CDKN1A(1026)

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06-1398ABE1317P1484
vibrant-m

05-345

Anti-p21/WAF1/Cip1 Antibody

vibrant-m

06-1398

Anti-CDK5RAP2 Antibody

biological source

mouse

biological source

rabbit

biological source

rabbit

biological source

mouse

species reactivity

mouse, human

species reactivity

human

species reactivity

mouse, human, rat

species reactivity

mouse, human

antibody form

purified immunoglobulin

antibody form

affinity isolated antibody

antibody form

affinity isolated antibody

antibody form

purified immunoglobulin

UniProt accession no.

P38936

UniProt accession no.

Q96SN8

UniProt accession no.

P50613

UniProt accession no.

P38936

shipped in

dry ice

shipped in

wet ice

shipped in

wet ice

shipped in

dry ice

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General description

Two families of cyclin dependent kinase inhibitors (CKIs) have been identified. The p21WAF1/Cip1 family inhibits all kinases involved in the G1/S transition. The p16INK4a family inhibits Cdk4 and Cdk6 specifically. The biochemical activities and patterns of expression of CKIs during development implicate these proteins as the primary effectors of signaling pathways that control cell cycle exit, an event that is critical for differentiation. Studies have shown that p21WAF1/Cip1 binds tightly to the G1 and S phase kinases, cyclin E/Cdk2, cyclin D/Cdk4, and cyclin A/Cdk2, and effectively inhibits their activity, whereas p21WAF1/Cip1 is a relatively poor inhibitor of the G2/M phase kinase cyclin B/Cdc2. In addition, p21WAF1/Cip1 inhibits proliferating cell nuclear antigen (PCNA), binds to and inhibits inactivation of Rb, which is essential for cell cycle progression, and may also interact with E2F and protect cells against p53-mediated apoptosis.

Specificity

Other species cross-reactivity is unknown.
Recognizes Cip1, MW 21 kDa

Immunogen

Epitope: amino acids 1-80
Recombinant full-length human Cip1 with a histidine tag.

Application

Immunoprecipitation: 4 μg of a previous lot immunoprecipitated Cip1 from 500 μg of HeLa nuclear extract.
Research Category
Epigenetics & Nuclear Function
Research Sub Category
Cell Cycle, DNA Replication & Repair
Use Anti-p21/WAF1/Cip1 Antibody (Mouse Monoclonal Antibody) validated in WB, IP to detect p21/WAF1/Cip1 also known as CDK-interacting protein or cyclin-dependent kinase inhibitor 1A.

Quality

Evaluated by western blotting on HeLa nuclear extract.

Western Blot Analysis: 0.5-2 μg/mL of this antibody detected Cip1 in 20 μg of HeLa nuclear extract

Target description

21 kDa

Physical form

Format: Purified
Protein G Purified
Purified, pooled monoclonal mouse IgGs in buffer containing 0.1 M Trisglycine, pH 7.4, 0.15 M NaCl containing 0.05% sodium azide. Frozen solution.

Storage and Stability

Stable for 1 year at from date of receipt.

Analysis Note

Control
Positive Antigen Control: Catalog #12-309, Hela cell nuclear extract. Add an equal volume of Laemmli reducing sample buffer to 10 μL of extract and boil for 5 minutes to reduce the preparation. Load 20 μg of reduced extract per lane for minigels.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Legal Information

UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class

12 - Non Combustible Liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Histone deacetylase is a target of valproic acid-mediated cellular differentiation.
Gurvich, Nadia, et al.
Cancer Research, 64, 1079-1086 (2004)
Georg Nickenig et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 16(9), 1077-1086 (2002-06-28)
Reactive oxygen species such as superoxide and hydroxyl radicals have been implicated in the pathogenic growth of various cell types. The molecular mechanisms involved in redox-sensitive cell growth control are poorly understood. Stimulation of cultured vascular smooth muscle cells (VSMC)
CREG1 enhances p16(INK4a) -induced cellular senescence.
Moolmuang, B; Tainsky, MA
Cell Cycle null
M Pibiri et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 15(6), 1006-1013 (2001-04-09)
The thyroid hormone (T3) affects cell growth, differentiation, and regulates metabolic functions via its interaction with the thyroid hormone nuclear receptors (TRs). The mechanism by which TRs mediate cell growth is unknown. To investigate the mechanisms responsible for the mitogenic
Sorafenib attenuates p21 in kidney cancer cells and augments cell death in combination with DNA-damaging chemotherapy.
Inoue, Hiromi, et al.
Cancer Biology & Therapy, 12, 827-836 (2011)

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