Anal. Chem. 2008, 80, 8353
Correction Complications in the Assignment of 14 and 28 Da Mass Shift Detected by Mass Spectrometry as in Vivo Methylation from Endogenous Proteins Sung Yun Jung, Yehua Li, Yi Wang, Yue Chen, Xian-De Liu, N. Tony Eissa, Yingming Zhao, and Jun Qin* (Anal. Chem. 2008, 80, 1721–1729)
Because of an error during submission of the title article, the following two authors were inadvertently omitted: Xian-De Liu and N. Tony Eissa. Both are affiliated with the Department of Medicine, Baylor College of Medicine, Houston, Texas 77030. AC801953E 10.1021/ac801953e Published on Web 10/08/2008
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H NMR and UPLC-MSE Statistical Heterospectroscopy: Characterization of Drug Metabolites (Xenometabolome) in Epidemiological Studies Derek J. Crockford,* Anthony D. Maher, Kourosh R. Ahmadi, Amy Barrett, Robert S. Plumb, Ian D. Wilson, and Jeremy K. Nicholson (Anal. Chem. 2008, 80, 6835–6844)
The illustrative N-acetyl-L-cysteine acetaminophen structure given as an overlay in Figure 1b (on page 6839) shows an incorrect positional isomer (the 4-N-acetylcysteine conjugate). The correct isomer is the 3-N-acetylcysteine conjugate as previously assigned.1,2
(1) Bales, J. R.; Sadler, P. J.; Nicholson, J. K.; Timbrell, J. A. Clin. Chem. 1984, 30, 1631–1636. (2) Bales, J. R.; Nicholson, J. K.; Sadler, P. J. Clin. Chem. 1985, 31, 757–762.
AC801996W 10.1021/ac801996w Published on Web 10/04/2008
10.1021/ac801953e CCC: $40.75 2008 American Chemical Society
Analytical Chemistry, Vol. 80, No. 21, November 1, 2008
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