Part:BBa_K1725302
Member of the RBS library - derived from BBa_B0032
Parts K1725301-K1725332 are members of ribosome binding site library derived from Anderson-family RBS BBa_B0032. All 32 sequences were obtained by randomised PCR.
Design
For the construction of the RBS library, a master sequence based on the RBS B0032 was used. 4 nucleotides within the actual ribosome binding site were randomised giving 32 different B0032-derived RBS variants. The predicted efficiency of each RBS library member was estimated using the RBS Library Calculator of Salis et al (2009). Originally, RBS Library was designed for every gene in luxABGCDE operon (BBa_K1725352) in order to optimise bioluminescence in E. coli. 32 different BioBrick RBS variants were incorporated upstream of each of the lux genes by PCR, and different libraries were then combined together by BioBrick assembly. This method could potentially produce over 1 billion different variants of the lux operon. The developed method was relatively quick, and could easily be used to optimize other metabolic pathways where a suitable screen or selection for optimal performance is available.
B0032-derived RBS library members
Identifier | Sequence | Estimated strength (au) |
---|---|---|
Degenerate sequence | TCACACANRARRG | - |
BBa_K1725301 | TCACACAGGAGGG | 15730.86 |
BBa_K1725302 | TCACACAGGAGAG | 12493.41 |
BBa_K1725303 | TCACACAGGAAGG | 8716.05 |
BBa_K1725304 | TCACACAAGAGGG | 7247.43 |
BBa_K1725305 | TCACACAAGAAGG | 5532.39 |
BBa_K1725306 | TCACACACGAGGG | 3880.58 |
BBa_K1725307 | TCACACATGAGGG | 3880.58 |
BBa_K1725308 | TCACACAAAAAGG | 2574.21 |
BBa_K1725309 | TCACACAAAAGGG | 2574.21 |
BBa_K1725310 | TCACACACAAAGG | 2574.21 |
BBa_K1725311 | TCACACACAAGGG | 2574.21 |
BBa_K1725312 | TCACACAGAAAGG | 2574.21 |
BBa_K1725313 | TCACACATAAAGG | 2574.21 |
BBa_K1725314 | TCACACATAAGGG | 2574.21 |
BBa_K1725315 | TCACACATGAAGG | 2574.21 |
BBa_K1725316 | TCACACACGAAGG | 2352.63 |
BBa_K1725317 | TCACACAGGAAAG | 2161.77 |
BBa_K1725318 | TCACACAAGAGAG | 1969.19 |
BBa_K1725319 | TCACACATGAGAG | 1506.8 |
BBa_K1725320 | TCACACACGAGAG | 1500.04 |
BBa_K1725321 | TCACACAGAAGGG | 1203.18 |
BBa_K1725322 | TCACACAAAAGAG | 875.94 |
BBa_K1725323 | TCACACACAAGAG | 875.94 |
BBa_K1725324 | TCACACAGAAGAG | 875.94 |
BBa_K1725325 | TCACACATAAGAG | 875.94 |
BBa_K1725326 | TCACACAAGAAAG | 355.35 |
BBa_K1725327 | TCACACAAAAAAG | 271.26 |
BBa_K1725328 | TCACACACAAAAG | 271.26 |
BBa_K1725329 | TCACACAGAAAAG | 271.26 |
BBa_K1725330 | TCACACATAAAAG | 271.26 |
BBa_K1725331 | TCACACATGAAAG | 271.26 |
BBa_K1725332 | TCACACACGAAAG | 158.07 |
Randomised sequence locations are shown in red. Estimated strength corresponds to the Translation Initiation Rate values predicted by RBS library calculatorfor luxA gene.
Obtaining parts
RBS library parts were not submitted as DNA to the registry. For obtaining physical DNA of a particular RBS sequence or of the whole RBS library we suggest incorporating the RBS library into your forward PCR primer as described below.
Primer sequence for obtaining RBS library for a specific gene:
aaataaGAATTCGCGGCCGCTTCTAGAGTCACACANRARRGTACTAGATG ...
5' extension for improved EcoRI cleavage--biobrick prefix--RBS degenerate sequence--RBS scar--start codon
After the ATG, the oligo should contain 18-24 nucleotides, complementary to the open reading frame being amplified. PCR can then be performed as described in the [http://2015.igem.org/Team:Glasgow/Project/Overview/Protocols Protocols].
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]
None |