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Fig. 5 | BMC Microbiology

Fig. 5

From: Inhibition of bacteriochlorophyll biosynthesis in the purple phototrophic bacteria Rhodospirillumrubrum and Rhodobacter capsulatus grown in the presence of a toxic concentration of selenite

Fig. 5

Schematic representation of the tandem MS-spectrum of the signal at m/z 577.3. a: Spectrum of the signal obtained from the Se0-nanoparticle samples isolated from cultures of R. rubrum: Red bars. Comparison with the spectrum of the reference PPIX-O-CH3: Green bars. The bond cleavage(s) corresponding to the fragment loss(es) are indicated in parentheses on top of each bar representing molecular ions obtained in the MS/MS-spectra of both MS-signals at m/z 577.3. b: Structure of PPIX-O-CH3 with indication of bond cleavage locations

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BMC Microbiology

ISSN: 1471-2180

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