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. 2013 Nov 19;105(10):2392–2402. doi: 10.1016/j.bpj.2013.09.048

Figure 1.

Figure 1

Structure of barstar. The Cys-25 and Cys-82 mutant variants both possess a single tryptophan residue (W53) and either C25 or C82. The indole ring of W53 is buried within the main core of the native protein. Of the two cysteine residues, C25 is present on the surface, whereas C82 is partially buried. All experiments were done with the Cys-82 protein; only the FRET experiments were also done with the Cys-25 protein. The structure was drawn from the PDB file 1bta using the program PyMOL. To see this figure in color, go online.