Quantitative transcriptional analysis of TfCuMT. a, T. farahensis cultures induced with different copper concentrations, showed maximum expression at transcriptional level in the presence of 10 µg Cu++/ml; b, Inducible transcriptional expression of TfCuMT at 10 µg/ml copper ion at different time intervals. Maximum mRNA level was observed 15 min after copper induction.