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SKU:PA1355
Clonality:Polyclonal
Application:IHC-P, WB
Price: $200.00
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Overview

Product Name Anti-LKB1 Antibody
SKU/Catalog Number PA1355
Description Rabbit IgG polyclonal antibody for Serine/threonine-protein kinase STK11(STK11) detection. Tested with WB, IHC-P in Human;Mouse;Rat.
Cite This Product Anti-LKB1 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1355)
Replacement Item This antibody may replace the following items: sc-15922|sc-15923 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human, Mouse, Rat
Predicted Species Bovine

*This antibody is predicted to react with the above species based on antigen sequence similarities. Our Boster Guarantee covers the use of this product with the above species.

Application IHC-P, 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, and HRP Conjugated anti-Rabbit IgG Super Vision Assay Kit (SV0002-1) for IHC(P).
*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 A synthetic peptide corresponding to a sequence at the C-terminus of human LKB1(421-433aa SSKIRRLSACKQQ), different from the mouse sequence by one amino acid.
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial

Properties

Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 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: Uniprot.org)

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

Gene Name STK11
Protein Name Serine/threonine-protein kinase STK11
Molecular Weight 48636 MW
Protein Function Tumor suppressor serine/threonine-protein kinase that controls the activity of AMP-activated protein kinase (AMPK) family members, thereby playing a role in various processes such as cell metabolism, cell polarity, apoptosis and DNA damage response. Acts by phosphorylating the T-loop of AMPK family proteins, thus promoting their activity: phosphorylates PRKAA1, PRKAA2, BRSK1, BRSK2, MARK1, MARK2, MARK3, MARK4, NUAK1, NUAK2, SIK1, SIK2, SIK3 and SNRK but not MELK. Also phosphorylates non- AMPK family proteins such as STRADA, PTEN and possibly p53/TP53. Acts as a key upstream regulator of AMPK by mediating phosphorylation and activation of AMPK catalytic subunits PRKAA1 and PRKAA2 and thereby regulates processes including: inhibition of signaling pathways that promote cell growth and proliferation when energy levels are low, glucose homeostasis in liver, activation of autophagy when cells undergo nutrient deprivation, and B-cell differentiation in the germinal center in response to DNA damage. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton. Required for cortical neuron polarization by mediating phosphorylation and activation of BRSK1 and BRSK2, leading to axon initiation and specification. Involved in DNA damage response: interacts with p53/TP53 and recruited to the CDKN1A/WAF1 promoter to participate in transcription activation. Able to phosphorylate p53/TP53; the relevance of such result in vivo is however unclear and phosphorylation may be indirect and mediated by downstream STK11/LKB1 kinase NUAK1. Also acts as a mediator of p53/TP53-dependent apoptosis via interaction with p53/TP53: translocates to the mitochondrion during apoptosis and regulates p53/TP53-dependent apoptosis pathways. In vein endothelial cells, inhibits PI3K/Akt signaling activity and thus induces apoptosis in response to the oxidant peroxynitrite (in vitro). Regulates UV radiation-induced DNA damage response mediated by CDKN1A. In association with NUAK1, phosphorylates CDKN1A in response to UV radiation and contributes to its degradation which is necessary for optimal DNA repair (PubMed:25329316). .
Tissue Specificity Ubiquitously expressed. Strongest expression in testis and fetal liver.
Sequence Similarities Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. LKB1 subfamily.
Subcellular Localization Nucleus. Cytoplasm. Membrane . Mitochondrion. A small fraction localizes at membranes (By similarity). Relocates to the cytoplasm when bound to STRAD (STRADA or STRADB) and CAB39/MO25 (CAB39/MO25alpha or CAB39L/MO25beta). Translocates to the mitochondrion during apoptosis. Translocates to the cytoplasm in response to metformin or peroxynitrite treatment. PTEN promotes cytoplasmic localization. .
Uniprot ID Q15831
Alternative Names Serine/threonine-protein kinase STK11;2.7.11.1;Liver kinase B1;LKB1;hLKB1;Renal carcinoma antigen NY-REN-19;STK11;LKB1, PJS;
Research Areas |signal transduction|protein phosphorylation|ser / thr kinases|other kinases|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for Serine/threonine-protein kinase STK11

Serine/threonine kinase 11 or LKB1 is a protein kinase which in humans is encoded by the STK11 gene. The STK11/LKB1 gene, which encodes a member of the serine/threonine kinase, regulates cell polarity and functions as a tumour suppressor Smith et al.(1999) found that the mouse Lkb1 gene encodes a protein showing strong sequence similarity to human LKB1. Karuman et al.(2001) demonstrated that LKB1 physically associates with p53(191170) and regulates specific p53-dependent apoptosis pathways. Jenne et al.(1998) determined that the STK11 gene extends over 23 kb of genomic DNA and is composed of 9 exons, which are transcribed in telomere-to-centromere direction. Smith et al.(1999) found that the mouse Lkb1 gene consists of 10 exons covering approximately 15 kb.

Anti-LKB1 Antibody Images

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Anti-LKB1 Antibody
Anti-LKB1 antibody, PA1355, Western blotting
Lane 1: Rat Testis Tissue Lysate
Lane 2: Rat Liver Tissue Lysate
Lane 3: Rat Lung Tissue Lysate
Lane 4: Rat Embryo Tissue Lysate
Lane 5: MM453 Cell Lysate
Lane 6: HELA Cell Lysate
Lane 7: SMMC Cell Lysate
Anti-LKB1 Antibody
Anti-LKB1 antibody, PA1355, IHC(P)
IHC(P): Human Liver Cancer Tissue
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Publications

Tang Y, Li M, Wang Yl, Threadgill Md, Xiao M, Mou Cf, Song Gl, Kuang J, Yang X, Yang L, Gao Xj, Wang Yp, Meng Yp. Am J Cancer Res. 2015 Jan 15;5(2):498-513. Ecollection 2015. Art1 Promotes Starvation-Induced Autophagy: A Possible Protective Role I...

FAQs

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at support@bosterbio.com 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: Is your western blot protocol provided from the website applicable for all your antibodies? Keyword: applications, WB
A: The protocol is applicable for all our antibodies in WB, the NC Membrane(0.45μm or 0.22μm) and transfer time(70 mins or 50 mins) depends on the protein molecular weight, details can be found in included protocol.
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 support@bosterbio.com
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.