... analysis of naturally occur-ring cross-links, e.g. disulfide bonds, and artificiallyintroduced cross-links in proteins. Cross-links imposedistance constraints on amino acid residues that can beused ... chemical modificationsand cross-linking in protein mixtures, complexes, andassemblies. Proteins A single protein, a list of proteins from a mixture orfrom a protein complex or a complete proteome ... deactiva-ted for adding to a combined spectrum number ⁄mass ⁄ intensity list, which is used for matching.Data matchingData matching can be achieved in matching quests. In each quest, matching criteria...