The massXpert software package is a massspectrometry environment for linear(bio-)polymers. It inherits all the innovations ofGNU polyxmass. It allows the detailed definitionof new polymer chemistries in the XpertDef module.These chemistry definitions are then used in thedesktop calculator-like mass calculator(XpertCalc) and in the sophisticated polymersequence editor and (bio-)chemical/massspectrometric simulations module (XpertEdit).Available simulations include polymer and monomerchemical modifications, polymer sequence cleavage,gas-phase fragmentation, m/z ratio calculations,and more.License: GNU General Public License (GPL)Changes:
Bugs were fixed and a feature improvement was maderegarding cleaving a polymer sequence asking thatmasses be computed with no charge at all. Therewas a bug that would crash the program if anothercleavage was performed after a cleavage that wouldprovide no oligomers. This has been fixed.