Figure S1 - A Common Origin for the Bacterial Toxin-Antitoxin Systems parD and ccd, Suggested by Analyses of Toxin/Target and Toxin/Antitoxin Interactions

Dose-dependent interaction of the Kis antitoxin to the CcdB toxin analyzed by SPR. SPR sensograms corresponding to time course of His6Kis-CcdB interactions obtained in a Biacore 3000 flowing different concentrations of the His6Kis antitoxin on the toxin immobilized on the chip. Basic operations and analysis were as indicated in Material and Methods. (PDF)