摘要:Complexity of life#protein isoforms#genes This is in large part due to posttranslational modifications of proteins that provide covalent alterations to protein backbones and side chains that increase proteome complexities.MS-based proteomic analysis of PTM Wilkins MR,Gasteiger E,Gooley AA,Herbert BR,Molloy MP,Binz PA,Ou K,Sanchez JC,Bairoch A,Williams KL et al:High-throughput mass spectrometric discovery of protein post-translational modifications.J Mol Biol1999,289(3):645-657.