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a, overlay of the 20 minimum energy structures of kB1(GHFRWG;23–28). b, overlay highlighting the side chains of loop 6 shown in stick format. c, ribbon model of the NMR-derived structure of kB1(GHFRWG;23–28). Protein Data Bank code 2lur. d, ribbon model of kalata B1. Protein Data Bank code 1nb1.
