BBa_K1025005 1 BBa_K1025005 Tryptophan-sensor Part 2013-09-13T11:00:00Z 2015-05-08T01:08:45Z TanC and Rho were synthesized by DNA 2.0 corporation according to reference[1]. LacZ was cloned from E.coli genome. [1]Gong, F. & Yanofsky, C. Instruction of translating ribosome by nascent peptide. Science297, 1864-1867, doi:10.1126/science.1073997 (2002). iGEM trp sensor performance part is a plasmid constructed by 2013 iGEM Tsinghua-E team which is used for performance test of our novel tryptophan sensor. The mechanism of this biosensor has been described in detail by Gong F. andYanofsky C.[1] It was derived from one regulation sequence upstream of tryptophanase(tnaA) operon in wild type E. Coli. This sequence codes one 24-residue nascent peptide. Following this nascent peptide sequence stands one transcription termination factor (Rho) recognition sites. When certain amount of tryptophan exists, it is recognized by the nascent peptide. This leads to the hindering of TnaC-peptidyl-tRNA^Pro from being cleaved from ribosome. This peptide-mRNA-ribosome complex blocks Rho factor???s access to its binding site which is just adjacent to termination codon of nascent peptide so that initiate the transcription of downstream sequence. As far as we know, this novel mechanism has not been utilized before as tryptophan sensor. Hence, as a proof of principle, we cloned beta-lactamase gene lacZ downstream of wild type nascent peptide and Rho interaction sequence. The assembly was cloned between the NcoI and BamHI sites of pTrc99A vector with IPTG induction.By measuring the activity of beta-lactamase activity (the protocol has been described in detail in our note, please refer to it) after induction and 21-hours culture, we obtained our expected tryptophan dependent beta-lactamase activity increase with dynamic range up to 3mM tryptophan. false false _1332_ 0 18748 9 Not in stock false The genes were cloned easily by PCR and connected to plasmid backbone by in-fusion cloning. false Weifan Liang annotation2341481 1 lacZ range2341481 1 376 3450 annotation2341482 1 rrnB_ternimator range2341482 1 3539 3696 annotation2341479 1 Rho binding site range2341479 1 156 362 annotation2341480 1 RBS_tnaA range2341480 1 363 375 annotation2341477 1 RBS_tac range2341477 1 62 72 annotation2341478 1 tanC range2341478 1 81 155 annotation2341476 1 tac promoter range2341476 1 1 62 BBa_K1025005_sequence 1 ttgacaattaatcatccggctcgtataatgtgtggaattgtgagcggataacaatttcacacaggaaacagaccatggctatgaatatcttacatatatgtgtgacctcaaaatggttcaatattgacaacaaaattgtcgatcaccgcccttgatttgcccttctgtagccatcaccagagccaaaccgattagattcaatgtgatctatttgtttgctatatcttaattttgccttttgcaaaggtcatctctcgtttatttacttgttttagtaaatgatggtgcttgcatatatatctggcgaattaatcggtatagcagatgtaatattcacagggatcactgtaattaaaataaatgaaggattatgtaatgaccatgattacggattcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatggcgctttgcctggtttccggcaccagaagcggtgccggaaagctggctggagtgcgatcttcctgaggccgatactgtcgtcgtcccctcaaactggcagatgcacggttacgatgcgcccatctacaccaacgtgacctatcccattacggtcaatccgccgtttgttcccacggagaatccgacgggttgttactcgctcacatttaatgttgatgaaagctggctacaggaaggccagacgcgaattatttttgatggcgttaactcggcgtttcatctgtggtgcaacgggcgctgggtcggttacggccaggacagtcgtttgccgtctgaatttgacctgagcgcatttttacgcgccggagaaaaccgcctcgcggtgatggtgctgcgctggagtgacggcagttatctggaagatcaggatatgtggcggatgagcggcattttccgtgacgtctcgttgctgcataaaccgactacacaaatcagcgatttccatgttgccactcgctttaatgatgatttcagccgcgctgtactggaggctgaagttcagatgtgcggcgagttgcgtgactacctacgggtaacagtttctttatggcagggtgaaacgcaggtcgccagcggcaccgcgcctttcggcggtgaaattatcgatgagcgtggtggttatgccgatcgcgtcacactacgtctgaacgtcgaaaacccgaaactgtggagcgccgaaatcccgaatctctatcgtgcggtggttgaactgcacaccgccgacggcacgctgattgaagcagaagcctgcgatgtcggtttccgcgaggtgcggattgaaaatggtctgctgctgctgaacggcaagccgttgctgattcgaggcgttaaccgtcacgagcatcatcctctgcatggtcaggtcatggatgagcagacgatggtgcaggatatcctgctgatgaagcagaacaactttaacgccgtgcgctgttcgcattatccgaaccatccgctgtggtacacgctgtgcgaccgctacggcctgtatgtggtggatgaagccaatattgaaacccacggcatggtgccaatgaatcgtctgaccgatgatccgcgctggctaccggcgatgagcgaacgcgtaacgcgaatggtgcagcgcgatcgtaatcacccgagtgtgatcatctggtcgctggggaatgaatcaggccacggcgctaatcacgacgcgctgtatcgctggatcaaatctgtcgatccttcccgcccggtgcagtatgaaggcggcggagccgacaccacggccaccgatattatttgcccgatgtacgcgcgcgtggatgaagaccagcccttcccggctgtgccgaaatggtccatcaaaaaatggctttcgctacctggagagacgcgcccgctgatcctttgcgaatacgcccacgcgatgggtaacagtcttggcggtttcgctaaatactggcaggcgtttcgtcagtatccccgtttacagggcggcttcgtctgggactgggtggatcagtcgctgattaaatatgatgaaaacggcaacccgtggtcggcttacggcggtgattttggcgatacgccgaacgatcgccagttctgtatgaacggtctggtctttgccgaccgcacgccgcatccagcgctgacggaagcaaaacaccagcagcagtttttccagttccgtttatccgggcaaaccatcgaagtgaccagcgaatacctgttccgtcatagcgataacgagctcctgcactggatggtggcgctggatggtaagccgctggcaagcggtgaagtgcctctggatgtcgctccacaaggtaaacagttgattgaactgcctgaactaccgcagccggagagcgccgggcaactctggctcacagtacgcgtagtgcaaccgaacgcgaccgcatggtcagaagccgggcacatcagcgcctggcagcagtggcgtctggcggaaaacctcagtgtgacgctccccgccgcgtcccacgccatcccgcatctgaccaccagcgaaatggatttttgcatcgagctgggtaataagcgttggcaatttaaccgccagtcaggctttctttcacagatgtggattggcgataaaaaacaactgctgacgccgctgcgcgatcagttcacccgtgcaccgctggataacgacattggcgtaagtgaagcgacccgcattgaccctaacgcctgggtcgaacgctggaaggcggcgggccattaccaggccgaagcagcgttgttgcagtgcacggcagatacacttgctgatgcggtgctgattacgaccgctcacgcgtggcagcatcaggggaaaaccttatttatcagccggaaaacctaccggattgatggtagtggtcaaatggcgattaccgttgatgttgaagtggcgagcgatacaccgcatccggcgcggattggcctgaactgccagctggcgcaggtagcagagcgggtaaactggctcggattagggccgcaagaaaactatcccgaccgccttactgccgcctgttttgaccgctgggatctgccattgtcagacatgtataccccgtacgtcttcccgagcgaaaacggtctgcgctgcgggacgcgcgaattgaattatggcccacaccagtggcgcggcgacttccagttcaacatcagccgctacagtcaacagcaactgatggaaaccagccatcgccatctgctgcacgcggaagaaggcacatggctgaatatcgacggtttccatatggggattggtggcgacgactcctggagcccgtcagtatcggcggaattccagctgagcgccggtcgctaccattaccagttggtctggtgtcaaaaataaaagcttggctgttttggcggatgagagaagattttcagcctgatacagattaaatcagaacgcagaagcggtctgataaaacagaatttgcctggcggcagtagcgcggtggtcccacctgaccccatgccgaactcagaagtgaaacgccgtagcgccgatggtagtgtggggtctccccatgcgagagtagggaactgccaggcatcaaataaaacgaaaggctcagtcgaaagactgggcctt igem2sbol 1 iGEM to SBOL conversion Conversion of the iGEM parts registry to SBOL2.1 James Alastair McLaughlin Chris J. Myers 2017-03-06T15:00:00.000Z