roSight PTM 2.0 allows identification and characterization of both intact proteins and peptides. Our PTM Warehouses are annotated with all known post-translational modifications (PTMs), alternative splicing events and single nucleotide polymorphisms (SNPs) using the technique of Shotgun Annotation developed in the Kelleher Research Group. ProSightPTM is the only proteomics software that allows the user to search their tandem MS data against PTM Warehouses containing the known biological complexity present in UniProt. Registration required.