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Backbone carbon topolome of E. coli. (A) Display of the backbone carbon topologies of the 112 spin systems of E. coli identified in this study. (B) List of the different topologies identified together with their occurrences (Occ.). Compounds with specific names matched BMRB database compounds, whereas compounds referred to as “others”, “amino-acid like”, or “saccharides” were not contained in the database.
