Binding of Tat Signal Sequences to REMPs Figure 5. Interactions of chimeric signal sequences with REMPs. The composition of the signal sequences is shown on the left as a three- letter code. This indicates whether the N-, H-, and C-regions originate from the DmsA (D) or the TorA (T) signal sequence, respectively. For example, DTT represents a signal sequence that consists of the N-region of DmsA followed by the H- and C-regions of TorA. For each chimeric pre-protein the SPR response curve is shown for an injection of a 200 nM solution over immobilized TorD and a DmsD, respectively, as indicated at the top of the PLoS ONE | www.plosone.org 7 March 2012 | Volume 7 | Issue 3 | e34159