Massxpert

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The massXpert project aims at providing biochemists with a software package allowing the following

• User-specific atom definitions and polymer chemistry definitions;
• Powerful sequence editing with user-defined glyphs for each monomer and monomer chemical modification. Multi-region selections;
• Polymer sequence chemical/enzymatic cleavage;
• Intramolecular cross-linking, like disulfide bonds with total resolution of the peptides generated upon enzymatic cleavage;
• Gas-phase fragmentation of oligomers;
• Mass-to-charge ratio calculations with inline change of ionization agent;
• Calculation of net electrical charge and of isoelectric point even by taking into account monomer modifications if polymer is a protein;
• Simulation of isotopic patterns for any chemical formula and z charge;
• A number of plugins allow 1 translation of the sequence from one format to another using a dictionary, like between the 1-letter code and the 3-letter code of proteins 2 conversion of number format according to any localized number format 3 sort mass lists.

WWW http//massxpert.tuxfamily.org/