| Types || |
| Roles |
| Sequences || BBa_I746101_sequence (Version 1)|
This part is simply the AIP sensor infrastructure (I746001
) from the agr
system with a standard registry terminator (B0015
The original part was made in order to transfer the S. aureus oligopeptide-based quorum sensing system into a BioBrick-compatible signalling mechanism.
In the natural system, the signalling oligopeptide (termed AIP) is made from AgrD by the membrane-located enzyme AgrB. It is then detected by the membrane-located AgrC, which phosphorylates AgrA which then has DNA-binding activity and upregulates transcription of the promoters termed P2 and P3 in the agr locus. There are four known variants of AIP with different molecular structures and cross-inhibitory activity; this BioBrick generates group I AIP.
This part contains the coding regions for group I agrB and agrD (in that order) from S. aureus strain NCTC8325, prefixed by the B0034 RBS and separated by a SaII site.
SourceThe original sequences for agrC and agrA were taken from the S. aureus Sequencing Project (results for strain NCTC8325) at Oklahoma University (http://www.genome.ou.edu/staph.html). The sequences were then codon-optimised for E. coli using GeneDesigner from DNA2.0 (http://www.dna20.com), and then synthesised by that company.