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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Metallomics. 2012 Mar 8;4(4):361–372. doi: 10.1039/c2mt20037f

Fig. 2.

Fig. 2

Cartoon representation of the wild-type recombinant TbpA plug, the mutated recombinant TbpA plug and the short peptides (S1, S2 and S3). The proposed iron binding sequence (EIEYE) is preserved in the wild-type recombinant plug and in the model peptides. However in the mutated recombinant plug this sequence is altered by alanine substitution of the three key potential iron binding residues making the sequence EIAAA. The three other tyrosine residues, Tyr58, 75 and 98, are also shown in the figure for both wild type and mutated recombinant plug proteins.