Difference between revisions of "Part:BBa K4414009"

Revision as of 09:02, 11 October 2022

TetR

Usage and Biology

The Tet repressor protein (TetR) family is a ubiquitous family of transcriptional regulators in a variety of bacteria, with more than 2000 members. The first TetR family identified in Escherichia coli. was Tn10, which controls the expression of genes encoding the tetracycline spillover pump necessary for drug resistance.(Ramos et al., 2005) In the absence of tetracycline, TetR binds to the tetracycline operon and inhibits the transcription of tetracycline spillover pump genes. When tetracycline enters the cell, tetracycline binds to TetR and changes its conformation, dissociating TetR from the tet operator (tetO) sequence, thus releasing inhibition. TetR-like transcriptional regulators contain a conserved helix-turn-helix DNA binding region (forming homodimers) and generally act as transcriptional repressors. (Das et al., 2016)Their function is to broadly regulate cellular activities (including drug spillover, antibiotic synthesis, amino acid metabolism, etc.) Sequence and Features

Reference

[1] Das, A. T., Tenenbaum, L., & Berkhout, B. (2016). Tet-On Systems For Doxycycline-inducible Gene Expression. Current Gene Therapy, 16(3), 156–167. https://doi.org/10.2174/1566523216666160524144041 [2] Ramos, J. L., Martínez-Bueno, M., Molina-Henares, A. J., Terán, W., Watanabe, K., Zhang, X., Gallegos, M. T., Brennan, R., & Tobes, R. (2005). The TetR family of transcriptional repressors. Microbiology and Molecular Biology Reviews: MMBR, 69(2), 326–356. https://doi.org/10.1128/MMBR.69.2.326-356.2005