Analysis of the primary structure and post-translational modifications of the Schistosoma mansoni antigen Smp28 by electrospray mass spectrometry.


The Schistosoma mansoni glutathione-S-transferase with an apparent molecular mass of 28 kDa, Smp28, has a blocked N-terminus which has been elucidated with the aid of the cDNA sequence combined with mass spectrometry and amino acid composition analysis of the N-terminal tryptic peptide. The blocked N-terminal tryptic peptide (m/z 695.8) contained an… (More)


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