Source:
Generated By: https://synbiohub.org/public/igem/igem2sbol/1
Created by: Yunchuan Jiang
Date created: 2011-09-30 11:00:00
Date modified: 2015-05-08 01:13:03
3OC6HSL Sender and Receiver Device Driven by PLlac 0-1
| Types | DnaRegion |
| Roles | Signalling engineered_region |
| Sequences | BBa_K658012_sequence (Version 1) |
Description
Quorum sensing is used by a number of gram-negative bacterial genera to regulate expression of specific sets of genes in a cell density-dependent fashion. We constructed the part which expresses LuxI and LuxR upon induction by isopropyl-b-D-thiogalactopyranoside (IPTG).There are two regulatory genes involved in quorum sensing, the I and R genes. The I gene directs the synthesis of an acyl-homoserine lactone (AHL) signal molecule termed the autoinducer. The R gene codes for a transcription factor that is responsive to the N-acyl HSL signal. Cells are permeable to this signal, and thus high cell densities are required to achieve a critical concentration of the autoinducer required to bind the luxR product, which will conbine with lux pR and active the downstream gene to transcribe. We also use the method of site-directed mutagenesis to modify the promoter lux pR.we have generated three point mutants by site-directed mutagenesis, designated lux pR3, lux pR5 and lux pR35.. In these mutants the C residue at position 3 was changed to a T, the G residue at position 5 was changed to a C ,position 5 and 3 both were changed.
Notes
This part is designed to test the strength of promoter lux pR (BBa_R0062) and its 3 mutants lux pR-3(BBa_K658009),lux pR-5 (BBa_K658010), lux pR-3/5 (BBa_K658011)Source
BBa_F1610BBa_K658000
| Access | Instance | Definition |
| public public public | BBa_R0011 BBa_F1610 BBa_K658000 | lacI+pL BBa_F1610 BBa_K658000 |
| Sequence Annotation | Location | Component / Role(s) |
| BBa_R0011 BBa_F1610 BBa_K658000 | 1,54 64,861 870,1931 | lacI+pL BBa_F1610 BBa_K658000 |