โ Scribed by Nikolaev, Eugene N; Popov, I A; Kononikhin, A S; Indeykina, M I; Kukaev, E N
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Mass spectra of cyclic depsipeptides have MASS Liverpool been reported, a ,a but only one cyclic peptide, namely cycle (Gly-L-Ala-D-Phe-Gly--D-Ala-L-Pbe),4 has apparently been examined.' This communication goes further by determinations of accurate masses of all the main fragments produced by e
A "micro-electrospray" ionization source has been developed that markedly increases the sensitivity of the conventional electrospray source. This was achieved by optimization of the source to accommodate nanoliter flow rates from 300 to 800-nL/min spraying directly from a capillary needle that, for
## Abbreviations CE capillary electrophoresis CID collision-induced dissociation EGF epidermal growth factor ESI electrospray ionization HPLC high-performance liquid chromatography ICP inductively coupled plasma IMAC immobilized metal affinity chromatography MALDI matrix-assisted laser desorption/