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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Principal component analysis of mass spectra of peptides generated from the tryptic digestion of protein mixtures.

Principal component analysis (PCA) has been used to analyse mass spectral peptide profiles obtained from the enzymatic digestion of standard protein mixtures. Scores and loadings plots clearly revealed peptide fragments that differentiated one protein mixture from another. Peptide map search results identified with a high degree of certainty any additional proteins in these mixtures. As a proof-of-concept this methodology was applied to hepatic protein mixtures obtained from rats treated with two hepatotoxic compounds: methapyriline and SB-219994. Liver proteins were extracted, pre-separated by one-dimensional polyacrylamide gel electrophoresis, subjected to tryptic digestion and analysed by mass spectrometry. Two up-regulated proteins, glutathione S-transferase with methapyrilene and peroxisomal bifunctional enzyme with SB-219994, were identified in this manner.[1]

References

  1. Principal component analysis of mass spectra of peptides generated from the tryptic digestion of protein mixtures. Bryant, D.K., Monté, S., Man, W.J., Kramer, K., Bugelski, P., Neville, W., White, I.R., Camilleri, P. Rapid Commun. Mass Spectrom. (2001) [Pubmed]
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