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Pack Size:100μg/vial
Validated Species:Human, Rat
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Product Name Anti-P27 KIP 1 Picoband™ Antibody
SKU/Catalog Number PB9070
Description Rabbit IgG polyclonal antibody for Cyclin-dependent kinase inhibitor 1B(CDKN1B) detection. Tested with WB in Humnan;Rat.
Cite This Product Anti-P27 KIP 1 Picoband™ Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PB9070)
Replacement Item This antibody may replace the following items: sc-12939-R|sc-130603|sc-16324|sc-16324-R|sc-1641|sc-393305|sc-393380|sc-527|sc-528|sc-53871|sc-53906|sc-56338|sc-56454|sc-71813|sc-776 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human, Rat
Application WB

*Our Boster Guarantee covers the use of this product in the above tested applications.

**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.

Recommended Detection Systems Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot.
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2017!
Immunogen E.coli-derived human P27 KIP 1 recombinant protein (Position: S10-T198). Human P27 KIP 1 shares 87% amino acid (aa) sequence identity with mouse P27 KIP 1.
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial


Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.
*carrier free antibody available upon request.
Concentration Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Storage At -20°C for one year. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for a longer time.Avoid repeated freezing and thawing.
Purification Immunogen affinity purified.
Isotype N/A

Protein Target Info (Source:

You can check the tissue specificity below for information on selecting positive and negative control.

Gene Name CDKN1B
Protein Name Cyclin-dependent kinase inhibitor 1B
Molecular Weight 22073 MW
Protein Function Important regulator of cell cycle progression. Involved in G1 arrest. Potent inhibitor of cyclin E- and cyclin A-CDK2 complexes. Forms a complex with cyclin type D-CDK4 complexes and is involved in the assembly, stability, and modulation of CCND1- CDK4 complex activation. Acts either as an inhibitor or an activator of cyclin type D-CDK4 complexes depending on its phosphorylation state and/or stoichometry. .
Tissue Specificity Expressed in all tissues tested. Highest levels in skeletal muscle, lowest in liver and kidney.
Sequence Similarities Belongs to the CDI family.
Subcellular Localization Nucleus. Cytoplasm. Endosome . Nuclear and cytoplasmic in quiescent cells. AKT- or RSK- mediated phosphorylation on Thr-198, binds 14-3-3, translocates to the cytoplasm and promotes cell cycle progression. Mitogen- activated UHMK1 phosphorylation on Ser-10 also results in translocation to the cytoplasm and cell cycle progression. Phosphorylation on Ser-10 facilitates nuclear export. Translocates to the nucleus on phosphorylation of Tyr-88 and Tyr-89. Colocalizes at the endosome with SNX6; this leads to lysosomal degradation (By similarity). .
Uniprot ID P46527
Alternative Names Cyclin-dependent kinase inhibitor 1B;Cyclin-dependent kinase inhibitor p27;p27Kip1;CDKN1B;KIP1;
Research Areas |cell biology|cell cycle|cell cycle inhibitors|cip / kip| epigenetics and nuclear signaling|cip/kip| cancer|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for Cyclin-dependent kinase inhibitor 1B

Cyclin-dependent kinase inhibitor 1B (p27KIP1), also known as KIP1 or P27, is an enzyme inhibitor that in humans is encoded by the CDKN1B gene. It encodes a protein which belongs to the Cip/Kipfamily of cyclin dependent kinase (Cdk) inhibitor proteins. It is mapped to 12p13.1. p27KIP1 can inhibit both CDK activation and the kinase activity of assembled and activated cyclin-CDK. The function of p27KIP1 is associated with an aggressive phenotype in human breast cancer. Downregulation of p27KIP1 by CK2-alpha-prime is necessary for development of agonist- and stress-induced cardiac hypertrophy.

Anti-P27 KIP 1 Picoband™ Antibody Images

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Anti-P27 KIP 1 Picoband™ Antibody
Anti-P27 KIP 1 Picoband antibody, PB9070-1.jpg
All lanes: Anti-p27 KIP 1(PB9070) at 0.5ug/ml
Lane 1: Rat Thymus Tissue Lysate at 40ug
Lane 2: Rat Brain Tissue Lysate at 40ug
Predicted bind size: 27KD
Observed bind size: 27KD
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Li Bh, Xu Sb, Li F, Zou Xg, Saimaiti A, Simayi D, Wang Yh, Zhang Y, Yuan J, Zhang Wj. Cell Signal. 2012 Mar;24(3):718-25. Doi: 10.1016/J.Cellsig.2011.11.005. Epub 2011 Nov 13. Stat6 Activity-Related Th2 Cytokine Profile And Tumor Growth Advantage ...

Customer Q&As

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at for more information about BSA-free antibodies and availability. The new BSA-free formula uses trehalose as a replacement to BSA. We have tested many alternative chemicals and found that trehalose protects the antibodies the best.
Q: Can I conjugate markers to this antibody? Can I link custom conjugates to this antibody? Keyword: conjugation
A: The antibody is stored with BSA and cannot be conjugated with markers. Carrier free antibodies are available upon request. Please contact
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the immunogen sequence of this antibody? Is this antibody polyclonal or monoclonal?
A: You can find the immunogen sequence under "Immunogen" and clonality in the product name.
Q: What is the expected band size? Why is it different than the observed band size?
A: The expected band size is predicted on the size of the protein. The actual band size may be affected by a few other factors including but not limited to:
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands

3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.

4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,
Q: What is the suggested dilution ratio for Western Blot (WB), Immunohistochemistry (IHC) and or ELISA standards? What is the optimal pH for the sample?
A: Check the datasheet for the product for details on dilution ratios for different experiments. You can find the datasheet button on the right side of the product page.
Q: What is the protocol you used for your Western blotting (WB) and Immunohistochemistry (IHC)?
A: Check our protocols under the tech support tab.
Q: What are some alternative names that could be used to describe this product?
A: Some common names include but are not limited to p27 antibody, p27 kip1 antibody, p27kip1 antibody