B. Research, A. C. Ireland, M. O. Italy, and . Glocker, Proteome Center Rostock, Germany) are acknowledged for the use of data. We would also like to thank Christian Claude for his contributions to the work

M. Karas, D. Bachmann, and F. Hillenkamp, Influence of the wavelength in high-irradiance ultraviolet laser desorption mass spectrometry of organic molecules, Analytical Chemistry, vol.57, issue.14, p.2935, 1985.
DOI : 10.1021/ac00291a042

L. Mikesh, B. Ueberheide, C. A. Coon, J. Syka, J. Shabanowitz et al., The utility of ETD mass spectrometry in proteomic analysis, Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics, vol.1764, issue.12, p.1811, 2006.
DOI : 10.1016/j.bbapap.2006.10.003

X. Yao, A. Freas, J. Ramirez, P. Demirev, and C. Fenselau, O Labeling for Comparative Proteomics:?? Model Studies with Two Serotypes of Adenovirus, Analytical Chemistry, vol.73, issue.13, p.2836, 2001.
DOI : 10.1021/ac001404c

I. Stewart, T. Thomson, and D. Figeys, 18O Labeling: a tool for proteomics, Rapid Communications in Mass Spectrometry, vol.19, issue.24, p.2456, 2001.
DOI : 10.1002/rcm.525

J. Silva, R. Denny, C. Dorschel, M. Gorenstein, I. Kass et al., Quantitative Proteomic Analysis by Accurate Mass Retention Time Pairs, Analytical Chemistry, vol.77, issue.7, p.2187, 2005.
DOI : 10.1021/ac048455k

N. Allet, N. Barrillat, T. Baussant, C. Boiteau, P. Botti et al., In vitro andin silico processes to identify differentially expressed proteins, PROTEOMICS, vol.4, issue.8, p.2333, 2004.
DOI : 10.1002/pmic.200300840

J. Rappsilber, U. Ryder, A. Lamond, and M. Mann, Large-Scale Proteomic Analysis of the Human Spliceosome, Genome Research, vol.12, issue.8, p.1231, 2002.
DOI : 10.1101/gr.473902

Y. Ishihama, Y. Oda, T. Tabata, T. Sato, T. Nagasu et al., Exponentially Modified Protein Abundance Index (emPAI) for Estimation of Absolute Protein Amount in Proteomics by the Number of Sequenced Peptides per Protein, Molecular & Cellular Proteomics, vol.4, issue.9, p.1265, 2005.
DOI : 10.1074/mcp.M500061-MCP200

S. Sunyaev, A. Liska, A. Golod, A. Shevchenko, and A. Shevchenko, MultiTag:?? Multiple Error-Tolerant Sequence Tag Search for the Sequence-Similarity Identification of Proteins by Mass Spectrometry, Analytical Chemistry, vol.75, issue.6, p.1307, 2003.
DOI : 10.1021/ac026199a

L. Patthy, Protein Evolution, Oxford, vol.75, 1999.

K. Aouam, R. Tissier, P. Bruneval, C. Mandet, A. Berdeaux et al., Preconditioning of salvaged myocardium in conscious rabbits with postinfarction dysfunction, AJP: Heart and Circulatory Physiology, vol.288, issue.6, p.2763, 2005.
DOI : 10.1152/ajpheart.00657.2004

N. Couvreur, L. Lucats, R. Tissier, A. Bize, A. Berdeaux et al., Differential effects of postconditioning on myocardial stunning and infarction: a study in conscious dogs and anesthetized rabbits, AJP: Heart and Circulatory Physiology, vol.291, issue.3, p.1345, 2006.
DOI : 10.1152/ajpheart.00124.2006

M. Ovize, K. Przyklenk, S. Hale, and R. Kloner, Preconditioning does not attenuate myocardial stunning, Circulation, vol.85, issue.6, p.2247, 1992.
DOI : 10.1161/01.CIR.85.6.2247

Z. Zhao, J. Corvera, M. Halkos, F. Kerendi, N. Wang et al., Inhibition of myocardial injury by ischemic postconditioning during reperfusion: comparison with ischemic preconditioning, American Journal of Physiology - Heart and Circulatory Physiology, vol.285, issue.2, p.579, 2003.
DOI : 10.1152/ajpheart.01064.2002