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Team:Newcastle/End of crack & signalling system
From 2010.igem.org
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*Production of subtilin involves the '''spa gene cluster''' encompassing 10 genes, '''spaBTCSIFEGRK''' | *Production of subtilin involves the '''spa gene cluster''' encompassing 10 genes, '''spaBTCSIFEGRK''' | ||
| - | The construct | + | |
| + | The construct contains: | ||
*'''spaRK promotor''' | *'''spaRK promotor''' | ||
*'''spaR''' (subtilin peptide antibiotic Regulation) - the 220 amino acid product of this gene usually regulates the downstream production of subtilin antibiotic. It has an N-terminal domain that can be phosphorylated and a C-terminal domian that has DNA binding properties [1] | *'''spaR''' (subtilin peptide antibiotic Regulation) - the 220 amino acid product of this gene usually regulates the downstream production of subtilin antibiotic. It has an N-terminal domain that can be phosphorylated and a C-terminal domian that has DNA binding properties [1] | ||
Revision as of 06:03, 14 June 2010
Subtilin
- A type 1 antimicrobial peptide [AMP] or lantibiotic produced by B. subtilis
- NB. Lantibiotic = peptide-derived antibiotics with high antimicrobial activity against various Gram-positive bacteria, including pathogenic bacteria such as propionibacteria, staphylococci, clostridia, enterococci and streptococci.
- NB. Subtilin not same as Subtilisin!!!!!
- Production of subtilin involves the spa gene cluster encompassing 10 genes, spaBTCSIFEGRK
The construct contains:
- spaRK promotor
- spaR (subtilin peptide antibiotic Regulation) - the 220 amino acid product of this gene usually regulates the downstream production of subtilin antibiotic. It has an N-terminal domain that can be phosphorylated and a C-terminal domian that has DNA binding properties [1]
- spaK (subtilin peptide antibiotic Kinase) - this gene codes for a 325 amino acid histadine kinase peptide that phosphorylates the N-terminus of spaR [2]. This activates the DNA binding ability of the C-terminus of spaR, which in turn initiates transcription of the downstream gene. In the case of our construct, this gene is gfp.
- rrnO transcriptional terminator
- spaS promotor - a strong promotor inducible by upstream activation of spaRK. It can be placed in front any gene to regulate its activity.
