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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Nat Protoc. 2012 May 10;7(6):1052–1067. doi: 10.1038/nprot.2012.045

Figure 1.

Figure 1

Schemes illustrating our approach to chemical modification of proteins. (a) Conversion of cysteine to formylglycine within the FGE recognition peptide sequence. (b) Coexpressing an aldehyde-tagged protein with FGE results in a site-specifically modified protein with an aldehyde that can be subsequently modified with aldehyde-specific chemical cargo.