Figure 1From: Short-chain fluorescent tryptophan tags for on-line detection of functional recombinant proteinsIllustration of 3D amino acid sequence structures of all five W-tags. (A) W1-tag, (B) W2-tag, (C) W3-tag, (D) W4-tag and (E) W5-tag; all structures display the amino acid residues on molecular basis showing the presumed/calculated in- and outward orientation of the amino acids in the protein loop used for the W-tag design.Back to article page