Fig. 1From: Time-resolved amino acid uptake of Clostridium difficile 630Δerm and concomitant fermentation product and toxin formationGeneralized view of Stickland reactions. Light grey panel: reductive pathway, dark grey panel: oxidative pathway, R depending on the amino acid. Products and intermediates that may be detectable in the supernatant and are thus discussed below are labelled with red lettersBack to article page