Figure 1.
Product ion spectrum derived from ion trap CID of [Insulin+Au(I)+4H]5+ : (a) mass-to-charge range from 300–1700; (b) mass-to-charge range from 1700–2900 . * denotes ions with a gold adduct; Ion nomenclature: for example, By4 is a y4 ion from B-chain; ABb21 is an ion that contains entire A-chain and b21 ion from B-chain.