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  1. Products /
  2. ELISA Kits /
  3. PathScan® RP Phospho-ULK1 (Ser555) Sandwich ELISA Kit

PathScan® RP Phospho-ULK1 (Ser555) Sandwich ELISA Kit #46893

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  • ELISA

    Supporting Data

    REACTIVITY H M
    Application Key:
    • ELISA-ELISA 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 

    Product Information

    Product Description

    The rapid protocol (RP) PathScan® RP Phospho-ULK1 (Ser555) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of ULK1 protein phosphorylated at Ser555 in a reduced assay time of 1.5 hours. Incubation of cell lysates and detection antibody on the coated microwell plate forms a sandwich with phospho-ULK1 (Ser555) in a single step. The plate is then extensively washed and TMB reagent is added for signal development. The magnitude of absorbance for the developed color is proportional to the quantity of phospho-ULK1 (Ser555). Learn more about all of your ELISA kit options here.

    *Antibodies in this kit are custom formulations specific to kit.

    Protocol

    Specificity / Sensitivity

    The PathScan® RP Phospho-ULK1 (Ser555) Sandwich ELISA Kit detects endogenous levels of ULK1 protein phosphorylated at Ser555. The kit sensitivity is shown in Figure 1. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

    Species Reactivity:

    Human, Mouse

    Background

    Two related serine/threonine kinases, UNC-51-like kinase 1 and 2 (ULK1, ULK2), were discovered as mammalian homologs of the C. elegans gene unc-51 in which mutants exhibited abnormal axonal extension and growth (1-4). Both proteins are widely expressed and contain an amino-terminal kinase domain followed by a central proline/serine rich domain and a highly conserved carboxy-terminal domain. The roles of ULK1 and ULK2 in axon growth have been linked to studies showing that the kinases are localized to neuronal growth cones and are involved in endocytosis of critical growth factors, such as NGF (5). Yeast two-hybrid studies found ULK1/2 associated with modulators of the endocytic pathway, SynGAP, and syntenin (6). Structural similarity of ULK1/2 has also been recognized with the yeast autophagy protein Atg1/Apg1 (7). Knockdown experiments using siRNA demonstrated that ULK1 is essential for autophagy (8), a catabolic process for the degradation of bulk cytoplasmic contents (9,10). It appears that Atg1/ULK1 can act as a convergence point for multiple signals that control autophagy (11), and can bind to several autophagy-related (Atg) proteins, regulating phosphorylation states and protein trafficking (12-16).~Phosphorylation of ULK1 by AMPK at Ser555 is critical for starvation-induced autophagy, cell survival under conditions of low nutrients and energy, and mitochondrial homeostasis (17).
    1. Ogura, K. et al. (1994) Genes Dev 8, 2389-400.
    2. Kuroyanagi, H. et al. (1998) Genomics 51, 76-85.
    3. Yan, J. et al. (1998) Biochem Biophys Res Commun 246, 222-7.
    4. Yan, J. et al. (1999) Oncogene 18, 5850-9.
    5. Zhou, X. et al. (2007) Proc Natl Acad Sci USA 104, 5842-7.
    6. Tomoda, T. et al. (2004) Genes Dev 18, 541-58.
    7. Matsuura, A. et al. (1997) Gene 192, 245-50.
    8. Chan, E.Y. et al. (2007) J Biol Chem 282, 25464-74.
    9. Reggiori, F. and Klionsky, D.J. (2002) Eukaryot Cell 1, 11-21.
    10. Codogno, P. and Meijer, A.J. (2005) Cell Death Differ 12 Suppl 2, 1509-18.
    11. Stephan, J.S. and Herman, P.K. (2006) Autophagy 2, 146-8.
    12. Okazaki, N. et al. (2000) Brain Res Mol Brain Res 85, 1-12.
    13. Young, A.R. et al. (2006) J Cell Sci 119, 3888-900.
    14. Kamada, Y. et al. (2000) J Cell Biol 150, 1507-13.
    15. Lee, S.B. et al. (2007) EMBO Rep 8, 360-5.
    16. Hara, T. et al. (2008) J Cell Biol 181, 497-510.
    17. Egan, D.F. et al. (2011) Science 331, 456-61.

    Database Links

    UniProt ID: O75385


    Entrez-Gene Id: 8408


    Limited Uses

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    Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

    For Research Use Only. Not For Use In Diagnostic Procedures.
    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    PathScan is a registered trademark of Cell Signaling Technology, Inc.
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