Source:
Generated By: https://synbiohub.org/public/igem/igem2sbol/1
Created by: Daniel Camsund
Date created: 2012-02-03 12:00:00
Date modified: 2015-08-31 04:08:32
Ptrc2O
| Types | DnaRegion |
| Roles | promoter Regulatory |
| Sequences | BBa_J153002_sequence (Version 1) |
Description
Ptrc2O is a modified version of Ptrc1O (link) that contains two lac operators to allow for stronger repression through DNA looping.It contains the lac O1 operator (proximal to the core promoter) and the ideal/symmetrical lac operator (distal to the core promoter) that allow for LacI repression and subsequent induction by IPTG.
Usage
It was characterized with a GFP reporter construct (link) carried on the broad-host-range shuttle vector pPMQAK1 (link) to be of similar strength and repressibility as Ptrc1O in E. coli DH5alpha. Characterization in the cyanobacterium Synechocystis sp. PCC 6803 revealed strong fluorescence from the Ptrc2O-driven construct, similar to the Ptrc1O-driven construct. However, as compared to Ptrc1O, it was strongly repressed by LacI, but could on the other hand not be induced by IPTG to its full strength (Huang etal 2010) (link).