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. Author manuscript; available in PMC: 2013 Apr 5.
Published in final edited form as: J Am Chem Soc. 2008 Aug 27;130(38):12604–12605. doi: 10.1021/ja804747d

Figure 1.

Figure 1

The revised structure for methanobactin; 1-(N-[mercapto-{5-oxo-2-(3-methylbutanoyl)oxazol-(Z)-4-ylidene}methyl]-Gly1-l-Ser2-l-Cys3-l-Tyr4)-pyrrolidin-2-yl-(mercapto-[5-oxo-oxazol-(Z)-4-ylidene]methyl)-l-Ser5-l-Cys6-l-Met7. The model shown is the (M-2H+63Cu)1− charged species, with the backbone traced in blue. The published X-ray crystal structure11 shows the chiral amino acids are all the l-enantiomers, the configurations of the exocyclic double bonds are both Z, and the chiral carbon 2 of the pyrrolidine ring is S.