Fig. 1From: Mercury removal by engineered Escherichia coli cells expressing different rice metallothionein isoformsAmino acid sequence and expression vector maps. a The amino acid sequence of OsMT1, OsMT2, OsMT3, and OsMT4. The Cys residues are shown as bold. b The map of pET41a-OsMTs and pET41a. The positions of His.tag, S.tag, and GST.tag are shown in gray boxesBack to article page