The EI-MS fragmentation mechanism of the bacterial sesquiterpene epi-isozizaene was investigated through enzymatic conversion of all 15 synthetic ((13) C1 )FPP isotopomers with the epi-isozizaene synthase from Streptomyces albus and GC-MS and GC-QTOF analysis including MS-MS. A systematic method, which we wish to call position-specific mass shift analysis, for the identification of the full set of fragmentation reactions was developed.
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Rabe et al. (2016) studied this question.
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