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Figure 4
Negative-ion electrospray mass spectra of the extract from MECP synthase. (a) Daughter-ion scan of geranyl standard. (b) Daughter-ion scan of farnesyl diphosphate standard. (c) Sample parent-ion scan of m/z = 79 ion (PO3-). (d) Sample parent-ion scan of m/z = 159 ion (HP2O6-). (e) Sample daughter-ion scan of m/z = 313 ion. (f) Sample daughter-ion scan of m/z = 381 ion. |