ERRATUM

Correction to the article entitled "Role of the Site of Protonation in the Low-Energy Decompositions of Gas Phase Peptide Ions" by K. A. Cox, S. J. Gaskell, M. Morris, and A. Whiting. J. Am. Soc. Mass Spectrom. 7:

522-531, 1996

In the June issue of the Journal of theAmerican Society for Mass Spectrometry, an incorrect version of Figure 5 in the above article was published on page 528. The correct figure, with original caption, is shown here. 100

a)

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I

I

..5

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b) b] Y.

I

o 100

200

Y2

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.111

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300

400

Ya

(M+2Ht' Y4

b4 I

soo

b,

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II 600

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ba

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1000

Figure 5. Product ion spectra recorded following low-energy CAD of doubly protonated (a) RLAIFSC*FR and (b) RLC*IFSAFR (where C* represents a cysteic acid residue).

© 1996 American Society for Mass Spectrometry 1044-0305/96/$15.00 PI! 51044-0305(96)00066-9 (J Am Soc Mass Spectrom 1996, 7, 759)