|
|
||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Submitted on February 6, 2006
Brain Research Institute, University Zürich/Swiss Federal Institute of Technology, Zürich 8057
Corresponding Author: mansuy{at}hifo.unizh.ch
Activity-dependent protein phosphorylation is a highly dynamic yet tightly regulated process essential for cellular signaling. Although recognized as critical for neuronal functions, the extent and stoichiometry of phosphorylation in brain cells remain undetermined. In this study, we resolved activity-dependent changes in phosphorylation stoichiometry at specific sites in distinct sub-cellular compartments of brain cells. Following highly sensitive phosphopeptide enrichment using immobilized metal affinity chromatography and mass spectrometry, we isolated and identified 974 unique phosphorylation sites on 499 proteins, many of which are novel. To further explore the significance of specific phosphorylation sites, we used isobaric peptide labels and determined the absolute quantity of both phosphorylated and non-phosphorylated peptides of candidate phosphoproteins and estimated phosphorylation stoichiometry. The analyses of phosphorylation dynamics using differentially stimulated synaptic terminal preparations revealed activity-dependent changes in phosphorylation stoichiometry of target proteins. Using this method, we were able to differentiate between distinct isoforms of Ca2+/calmodulin-dependent protein kinase (CaMKII) and identify a novel activity-regulated phosphorylation site on the glutamate receptor subunit GluR1. Together, these data illustrate that mass spectrometry-based methods can be used to determine activity-dependent changes in phosphorylation stoichiometry on candidate phosphopeptides following large-scale phosphoproteome analysis of brain tissue.
Revised on November 13, 2006
Accepted on November 17, 2006
Qualitative and quantitative analyses of protein phosphorylation in naive and stimulated mouse synaptosomal preparations
![]()
CiteULike
Complore
Connotea
Del.icio.us
Digg
Reddit
Technorati What's this?
This article has been cited by other articles:
![]() |
J. Feng, M. Zhu, M. C. Schaub, P. Gehrig, B. Roschitzki, E. Lucchinetti, and M. Zaugg Phosphoproteome analysis of isoflurane-protected heart mitochondria: phosphorylation of adenine nucleotide translocator-1 on Tyr194 regulates mitochondrial function Cardiovasc Res, July 2, 2008; (2008) cvn161v2. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. O. Collins, L. Yu, I. Campuzano, S. G. N. Grant, and J. S. Choudhary Phosphoproteomic Analysis of the Mouse Brain Cytosol Reveals a Predominance of Protein Phosphorylation in Regions of Intrinsic Sequence Disorder Mol. Cell. Proteomics, July 1, 2008; 7(7): 1331 - 1348. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. E. Craft, M. E. Graham, N. Bache, M. R. Larsen, and P. J. Robinson The in Vivo Phosphorylation Sites in Multiple Isoforms of Amphiphysin I from Rat Brain Nerve Terminals Mol. Cell. Proteomics, June 1, 2008; 7(6): 1146 - 1161. [Abstract] [Full Text] [PDF] |
||||
![]() |
N. D. Amin, Y.-L. Zheng, S. Kesavapany, J. Kanungo, T. Guszczynski, R. K. Sihag, P. Rudrabhatla, W. Albers, P. Grant, and H. C. Pant Cyclin-Dependent Kinase 5 Phosphorylation of Human Septin SEPT5 (hCDCrel-1) Modulates Exocytosis J. Neurosci., April 2, 2008; 28(14): 3631 - 3643. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. C. Trinidad, A. Thalhammer, C. G. Specht, A. J. Lynn, P. R. Baker, R. Schoepfer, and A. L. Burlingame Quantitative Analysis of Synaptic Phosphorylation and Protein Expression Mol. Cell. Proteomics, April 1, 2008; 7(4): 684 - 696. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Pflieger, M. A. Junger, M. Muller, O. Rinner, H. Lee, P. M. Gehrig, M. Gstaiger, and R. Aebersold Quantitative Proteomic Analysis of Protein Complexes: Concurrent Identification of Interactors and Their State of Phosphorylation Mol. Cell. Proteomics, February 1, 2008; 7(2): 326 - 346. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Y. Delgado, M. Coba, C. N. G. Anderson, K. R. Thompson, E. E. Gray, C. L. Heusner, K. C. Martin, S. G. N. Grant, and T. J. O'Dell NMDA Receptor Activation Dephosphorylates AMPA Receptor Glutamate Receptor 1 Subunits at Threonine 840 J. Neurosci., November 28, 2007; 27(48): 13210 - 13221. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. P. Mattison, W. M. Old, E. Steiner, B. J. Huneycutt, K. A. Resing, N. G. Ahn, and M. Winey Mps1 Activation Loop Autophosphorylation Enhances Kinase Activity J. Biol. Chem., October 19, 2007; 282(42): 30553 - 30561. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH |
| All ASBMB Journals | Journal of Biological Chemistry |
| Journal of Lipid Research | ASBMB Today |