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. 2001 Nov;45(11):3046–3055. doi: 10.1128/AAC.45.11.3046-3055.2001

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Copyright © 2001, American Society for Microbiology

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FIG. 7 — Ribosomal protein S5 mutant S21P in spectinomycin-resistant E. coli. (A) The deconvoluted electrospray mass spectrum was observed to give a mass of 17,524 Da for the mutated S5 protein. This was an increase of 10 Da from the predicted S5 mass. (B) Tandem MS/MS analysis of the 1,009.64-Da peptide in the mutated S5 was then performed. The fragments observed in the spectrum matched well with the predicted fragments (C) of the peptide LIAVNRVPK. Matches are indicated in bold.

FIG. 7 — Ribosomal protein S5 mutant S21P in spectinomycin-resistant E. coli. (A) The deconvoluted electrospray mass spectrum was observed to give a mass of 17,524 Da for the mutated S5 protein. This was an increase of 10 Da from the predicted S5 mass. (B) Tandem MS/MS analysis of the 1,009.64-Da peptide in the mutated S5 was then performed. The fragments observed in the spectrum matched well with the predicted fragments (C) of the peptide LIAVNRVPK. Matches are indicated in bold.