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  3. Phospho-ULK1 (Ser555) (D1H4) Rabbit Monoclonal Antibody (BSA and Azide Free)
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Phospho-ULK1 (Ser555) (D1H4) Rabbit Monoclonal Antibody (BSA and Azide Free) #36400

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  • WB
  • ELISA+

    Product Specifications

    REACTIVITY H M
    SENSITIVITY Endogenous
    MW (kDa) 140-150
    Source/Isotype Rabbit IgG
    Application Key:
    • WB-Western Blotting 
    • ELISA+-ELISA and/or ELISA-like Assays 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 

    Product Information

    Product Usage Information

    This product is the carrier free version of product #5869. All data were generated using the same antibody clone in the standard formulation which contains BSA and glycerol.

    This formulation is ideal for use with technologies requiring specialized or custom antibody labeling, including fluorophores, metals, lanthanides, and oligonucleotides. It is not recommended for ChIP, ChIP-seq, CUT&RUN or CUT&Tag assays. If you require a carrier free formulation for chromatin profiling, please contact us. Optimal dilutions/concentrations should be determined by the end user.

    BSA and Azide Free antibodies are quality control tested by size exclusion chromatography (SEC) to determine antibody integrity.

    Formulation

    Supplied in 1X PBS (10 mM Na2HPO4, 3 mM KCl, 2 mM KH2PO4, and 140 mM NaCl (pH 7.8)). BSA and Azide Free.

    For standard formulation of this product see product #5869

    Storage

    Store at -20°C. This product will freeze at -20°C so it is recommended to aliquot into single-use vials to avoid multiple freeze/thaw cycles. A slight precipitate may be present and can be dissolved by gently vortexing. This will not interfere with antibody performance.

    Specificity / Sensitivity

    Phospho-ULK1 (Ser555) (D1H4) Rabbit Monoclonal Antibody (BSA and Azide Free) detects endogenous levels of ULK1 only when phosphorylated at Ser555 of mouse ULK1 (equivalent to Ser556 of human ULK1). Bands of unknown origin are detected between 90 and 100 kDa.

    Species Reactivity:

    Human, Mouse

    The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.

    Species predicted to react based on 100% sequence homology:

    Rat

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser555 of mouse ULK1 protein (equivalent to Ser556 of human ULK1).

    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 mitochondiral 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.

    Alternate Names

    ATG1; ATG1 autophagy related 1 homolog; ATG1A; Autophagy-related protein 1 homolog; FLJ38455; FLJ46475; hATG1; KIAA0722; Serine/threonine-protein kinase ULK1; ULK1; unc-51 like autophagy activating kinase 1; Unc-51-like kinase 1; unc-51-like kinase 1 (C. elegans); UNC51; Unc51.1

    Database Links

    UniProt ID: O75385


    Entrez-Gene Id: 8408


    Limited Uses

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    For Research Use Only. Not for Use in Diagnostic Procedures.
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