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. Author manuscript; available in PMC: 2010 Dec 28.
Published in final edited form as: Angew Chem Int Ed Engl. 2008;47(40):7764–7767. doi: 10.1002/anie.200802502

Figure 1.

Figure 1

A) Crystal structure of Ssp DnaE intein.[21] DnaEN is shown in blue and DnaEC in red, with residues 9 and 35 highlighted in green. B) Sequence alignment of the conserved Block G of the DnaE intein family showing that both Ala and Ser are found at position 35. C) Structures of O-acyl peptide analogs of DnaEC used in this study. An O-acyl linkage was introduced at position 9 for peptide 1 and at position 35 for analogues 2-5.