Figure 2

Constructed protein expression vectors of T. thermophila. A. Vector pVTtsfGFP includes the T. thermophila codon-adapted TtsfGFP expression cassette; B. Vector pVsfGFP carries a non-codon-adapted sfGFP expression cassette; C. Vector pEGFP includes the non-codon-adapted EGFP expression cassette. All vectors were derived from pVGF. MTT1 is a cadmium-inducible promotor. The transcription is terminated using an rpL29 termination sequence.