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Data

TetR Mutants

• V36F
• P39K
• Y42F
• P39Q-Y42M

T7 Promoter Plasmids

• pSB3K1-T7-const-RFP

Description: The T7 promoter upstream of the RFP gene, set in the pSB3K1 backbone

Sequence:

Plasmid Map:

Saturation Curves:

Dose-Response Curves:

• pSB3K1-T7-lac-RFP

• pSB3K1-T7-lac2-RFP

• pSB3K1-T7-const-Lysis

• pSB3K1-T7-lac-Lysis

T7 Promoter Variants

Reporter Plasmids

J61002 Ptet-RFP

TetR plasmids

pSB3K1 Pconst-TetR

Description

This plasmid is the intermediary step before having the complete TetR plasmid. Here we only added TetR under constitutive promoter, wanting to add LacI under Ptet afterwards with a second Gibson. See the "assembly" page for more details.

Parts assembled:

• Plasmid backbone: pSB3K1 from ETHZ 2007 [http://partsregistry.org/wiki/index.php?title=Part:pSB3K1 "pSB3K1"] (taken from the delivery plate)
• Pconst: J23116 from Berkeley 2006 [http://partsregistry.org/Part:BBa_J23116 "j23116"] (sequence copied into our primers)
• RBS (B0034?) and spacer: (sequence copied into our primers)
• TetR: "TetR sequence" (623 bp) The sequence lacks a stop codon, we added TAA with our primers

Sequence

 we need a convenient way to put the complete sequence!

Sequenced data compared to the sequence of Pconst,RBS+spacer and TetR gene:"pSb3K1_TetR_seq" All these parts are correct.

Plasmid map

This plasmid contains a p15A replication origin as well as a Kanamycin resistance marker.

ATC induction

The platereader experiment was run for 12h, using 0-0.1-5-25-200-300-800-1000-1200-1500 nM/ul final concentrations of ATC. The cells were cotransformed with pSB3K1 Pconst-TetR and J61002 Ptet-RFP, to use the fluorescent protein as a readout for TetR inactivation by ATC. All the concentrations were tested on 4 different cultures, shown in the next graphs:

Dose-response

These data are coming from the same experiment; they show the saturation value of RFP expression for each ATC concentration. The values were averaged over the 4 different cell cultures.

pSB3K1 Pconst-TetR Ptet-LacI

Description

This is the final TetR plasmid, containing the TetR gene as well as the LacI inverter with a Ptet promoter. Here we have wild-type TetR and Ptet sequences, but this plasmid is also intended to be used with mutant TetR genes and mutant Ptet binding sequences.

Parts assembled

• Plasmid backbone containing Pconst and TetR: see precedent section
• Terminator: B0014 from the Registry [http://partsregistry.org/Part:BBa_B0014 "B0014"] (sequence copied into our primers)
• Ptet: R0040 from Registry [http://partsregistry.org/Part:BBa_R0040 "R0040"] (sequence copied into our primers)
• LacI: amplified from Repressilator plasmid "LacI sequence" The sequence lacks a stop codon, we added TAA with our primers.

Sequence

Add results for TetR sequencing
Add results for LacI asap

Plasmid map

This plasmid has the same structure as pSB3K1 Pconst-TetR: p15A replication origin and Kanamycin resistance marker. However, Ptet-LacI has been added after the p15A sequence.

ATC induction

ATC dose-response curve

IPTG induction

IPTG dose-response curve