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Electrospray ionization of large multiply charged species proceeds via Dole’s charged residue mechanism by J Fernandez de la Mora is a Chemistry article available to read on EtoBox.

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The maximum charge z max on a variety of electrospray ions of globular proteins retaining their native structure, as well as naturally compact starburst dendrimers is compared to the Rayleigh charge z R (based on a water sphere with the ion mass). For most published data examined, z max is between 65% and 110% of z R , providing strong support in favor of Dole's charged residue mechanism, at least for masses from 3.3 kD up to 1.4 MD. Other large but less compact ions from proteins and linear chains of polyethylene glycols (PEGs) have z max values considerably larger than z R , apparently implying that they also form as charged residues, though from non-spherical drops held together by the polymer backbone. ©2000 Elsevier Science B.V.

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Author

J Fernandez de la Mora

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0003-2670)

Published

2000

Language

EN

Field

Chemistry (Physical Sciences)