Abcam, ab60987, Anti-LKB1 (phospho T189) antibody

Size: 100µg
Rabbit Polyclonal LKB1 phospho T189 antibody. Suitable for WB and reacts with Mouse samples. Cited in 1 publication. Immunogen corresponding to Synthetic Peptide within Human STK11 phospho T189.
Key facts
Host species:Rabbit,
Clonality:Polyclonal,
Isotype:IgG,
Carrier free:No,
Reacts with:Mouse,
Applications:WBSee reactivity dataSee the reactivity data table below for information on validated species and application combinations.,
Immunogen:Synthetic Peptide within Human STK11 phospho T189. The exact immunogen used to generate this antibody is proprietary information.Q15831

Properties and Storage Information:
Form-Liquid, Purification technique-Affinity purification Immunogen, Purification notes-The antibody against non-phosphopeptide was removed by chromatographyusing non-phosphopeptide corresponding to the phosphorylation site., Storage buffer-pH: 7.4Preservative: 0.02% Sodium azideConstituents: PBS, 50% Glycerol (glycerin, glycerine), 0.87% Sodium chloride, Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions--20°C, Aliquoting information-Upon delivery aliquot, Storage information-Avoid freeze / thaw cycle

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
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.
Biological function summary
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.
Pathways
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.