STK11 KO cell lysate available now. KO validated by Western blot. Free of charge wild type control included. Knockout achieved by using CRISPR/Cas9, 1 bp insertion in exon1.
LKB1, Liver kinase B1, PJS, Polarization related protein LKB1, Renal carcinoma antigen NY-REN-19, STK11_HUMAN, Serine/Threonine Kinase 11, Serine/threonine protein kinase STK11, Serine/threonine-protein kinase 11, Serine/threonine-protein kinase LKB1, Serine/threonine-protein kinase XEEK1, hLKB1
STK11 KO cell lysate available now. KO validated by Western blot. Free of charge wild type control included. Knockout achieved by using CRISPR/Cas9, 1 bp insertion in exon1.
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.
Lysate preparation: Our lysates are made using RIPA buffer to which we add a protease inhibitor cocktail and phosphatase inhibitor cocktail (ratio: 300:100:10). This means that the protein of interest is denatured. If you require a native form of the protein please use the live cell version. Please refer to our lysis protocol for further details on how our lysates are prepared.
User storage instructions: Lyophilizate may be stored at 4°C. After reconstitution, store at -20°C for short-term storage or -80°C for long-term storage.
This product is subject to limited use licenses from The Broad Institute, ERS Genomics Limited and Sigma-Aldrich Co. LLC, and is developed with patented technology. For full details of the licenses and patents please refer to our limited use license and patent pages.
LKB1 also known as STK11 is a serine/threonine kinase with a molecular weight of approximately 48 kDa. This protein is widely expressed in various tissues including the liver pancreas and skeletal muscle. LKB1 plays an essential role in cellular energy homeostasis by phosphorylating and activating a group of at least 14 different proteins within the AMP-activated protein kinase (AMPK) family. The LKB1 protein acts as a master upstream kinase ensuring proper cellular energy balance and metabolism under conditions of nutrient stress.
LKB1 is involved in controlling cell growth polarity and metabolism. It forms a complex with STRAD and MO25 which are necessary for its activation and function. By influencing these biological processes LKB1 regulates cell cycle arrest in response to stress signals and contributes to maintaining cellular integrity. The regulation of these processes positions LKB1 as an important factor in managing how cells respond to metabolic challenges.
Its function integrates into major signaling networks like the AMPK and mTOR pathways. LKB1 activates AMPK which in turn affects mTOR signaling a pathway critical for cell growth and autophagy regulation. LKB1's interaction with AMPK links cellular energy levels to the control of biosynthetic pathways and cell cycle progression. The LKB1-AMPK-mTOR axis for instance highlights the protein's role in managing how cells balance growth-related activities and energy conservation.
LKB1 mutations or malfunctions are linked to Peutz-Jeghers syndrome and various forms of cancer such as lung cancer. Altered LKB1 activity affects its ability to suppress tumors primarily through its pathway interactions with AMPK and mTOR. Dysfunction in this pathway leads to unregulated cell growth and subsequently tumorigenesis. Understanding LKB1's role in these conditions aids in developing targeted therapies and diagnostic tools to manage associated risks and interventions effectively.
We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.
In the unlikely event of one of our products not working as expected, you are covered by our product promise.
Full details and terms and conditions can be found here:
Terms & Conditions.
Lane 1: Wild-type HEK-293T cell lysate (20µg)
Lane 2: STK11 knockout HEK-293T cell lysate (20µg)
Lane 3: Hu testis cell lysate (20µg)
Lane 4: HeLa cell lysate (20µg)
Lanes 1- 4: Merged signal (red and green). Green - Anti-LKB1 antibody [EPR19379] ab199970 observed at 55 kDa. Red - loading control Anti-GAPDH antibody [6C5] - Loading Control ab8245 observed at 37 kDa.
Anti-LKB1 antibody [EPR19379] ab199970 Anti-LKB1 antibody [EPR19379] was shown to specifically react with LKB1 in wild-type HEK-293T cells in western blot. Loss of signal was observed when knockout cell line Human STK11 (LKB1) knockout HEK-293T cell line ab266647 (knockout cell lysate ab257712) was used. Wild-type and LKB1 knockout samples were subjected to SDS-PAGE. Membrane was blocked for 1 hour at room temperature in 0.1% TBST with 3% non-fat dried milk. Anti-LKB1 antibody [EPR19379] ab199970 and Anti-GAPDH antibody [6C5] - Loading Control (Anti-GAPDH antibody [6C5] - Loading Control ab8245) were incubated overnight at 4°C at 1 in 1000 and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.
All lanes: Western blot - Anti-LKB1 antibody [EPR19379] (Anti-LKB1 antibody [EPR19379] ab199970) at 1/1000 dilution
Lane 1: Wild-type HEK-293T cell lysate at 20 µg
Lane 2: STK11 knockout HEK-293T cell lysate at 20 µg
Lane 2: Western blot - Human STK11 (LKB1) knockout HEK-293T cell line (Human STK11 (LKB1) knockout HEK-293T cell line ab266647)
Lane 3: Hu testis cell lysate at 20 µg
Lane 4: HeLa cell lysate at 20 µg
Performed under reducing conditions.
Predicted band size: 48 kDa
Observed band size: 55 kDa
Homozygous: 1 bp insertion in exon1
Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.
For licensing inquiries, please contact partnerships@abcam.com