%0 Journal Article %T A Novel Peptide-Based SILAC Method to Identify the Posttranslational Modifications Provides Evidence for Unconventional Ubiquitination in the ER-Associated Degradation Pathway %A Veronica G. Anania %A Daisy J. Bustos %A Jennie R. Lill %A Donald S. Kirkpatrick %J International Journal of Proteomics %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/857918 %U http://dx.doi.org/10.1155/2013/857918