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lüll Proteomics strategies for protein identification Resing KA; Ahn NGFEBS Lett 2005[Feb]; 579 (4): 885-9The information from genome sequencing provides new approaches for systems-wide understanding of protein networks and cellular function. DNA microarray technologies have advanced to the point where nearly complete monitoring of gene expression is feasible in several organisms. An equally important goal is to comprehensive survey cellular proteomes and profile protein changes under different cellular states. This presents a complex analytical problem, due to the chemical variability between proteins and peptides. Here, we discuss strategies to improve accuracy and sensitivity of peptide identification, distinguish represented protein isoforms, and quantify relative changes in protein abundance.|Computational Biology/*methods[MESH]|Databases, Protein[MESH]|Peptide Mapping/methods[MESH]|Protein Array Analysis[MESH]|Protein Interaction Mapping/methods[MESH]|Proteins/*analysis[MESH]|Proteomics/*methods[MESH] |