Figure 2
TrpR protein sequences. Protein sequences of the uncleaved TrpR Val58Ile variant including the N-terminal extension consisting of His6, spacer and protease-cleavage sequences (top), after cleavage of the extension (middle) and wild-type TrpR (bottom). The natural initiating methionine residue of wild-type TrpR is designated 1. Numbering of N-terminal extension residues begins with Pro -1 adjacent on the left to Met1, and continues with negative numbers to the new initiating methionine residue preceding the His6 sequence. Protease cleavage on the C-terminal side of Gln -3 yields the cleaved protein with additional N-terminal residues Gly-Pro preceding the natural methionine residue. |